DRAFT UGANDA STANDARD  
  DUS 
2660:2022  
First  Edition  
2022 -mm-dd 
 
 
 Reference number  
DUS 2660: 2022 
© UNBS 2022   
  
Gaming equipment  — Progressive Gaming Devices  — 
requirements  
 DUS 2660 :2022  
ii © UNBS yyyy  – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a contract. Users are 
respon sible for its correct application  
© UNBS 2022  
All rights reserved. Unless otherwise specified, no part of this publication shall be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying and microfilm, without prior written 
permission from UNBS.  
Requests for permission to reproduce this document should be addressed to  
The Executive Director  
Uganda National Bureau of Standards  
P.O. Box 6329  
Kampala  
Uganda  
Tel: +256 414 333 250/1/2/3  
Fax: +256 414 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  CDUS nnnn -n:yyyy  
© UNBS yyyy  – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
Introduction  ................................ ................................ ................................ ................................ .......................  vii 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Conformance  ................................ ................................ ............................. Error! Bookmark not defined.  
3 Normative references  ................................ ................................ ................................ ............................  1 
4 Terms and definitions  ................................ ................................ ............... Error! Bookmark not defined.  
5 Symbols (and abbreviated terms)  ................................ ................................ ................................ ........  1 
6 Clause  ................................ ................................ ................................ ......... Error! Bookmark not defined.  
6.1 Subclause (level  1) ................................ ................................ .................... Error! Bookmark not defined.  
6.1.1 Subclause (level  2) ................................ ................................ .................... Error! Bookmark not defined.  
6.1.2 Subclause (level  2) ................................ ................................ .................... Error! Bookmark no t defined.  
6.2 Subclause (level  1) ................................ ................................ .................... Error! Bookmark not defined.  
7 Clause  ................................ ................................ ................................ ......... Error! Bookmark not defined.  
8 Special  ................................ ................................ ................................ ........ Error! Bookmark not defined.  
Annex  A (normative)   Annex title  ................................ ................................ ................................ .......................  9 
A.1 General  ................................ ................................ ................................ ................................ .................  14 
A.2 Clause  ................................ ................................ ................................ ................................ ...................  14 
A.2.1 Subclause (level  1) ................................ ................................ ................................ ..............................  14 
A.2.2 Subclause (level  1) ................................ ................................ ................................ ..............................  15 
A.3 Clause  ................................ ................................ ................................ ................................ ...................  15 
Annex  B (informativ e)  Which styles correspond to which element  — Quick reference guide  .................  16 
Bibliography  ................................ ................................ ................................ ................................ ......................  19 
 DUS 2660 :2022  
iv © UNBS yyyy  – All rights reserved  
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Mi nistry of Trade, Industry and 
Cooperatives established under Cap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact p oint for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).  
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of key stakeholders 
including government, academia, consumer groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Commi ttee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards 
for approval and declaration as Uganda Standards by the National Standards Council.  
The committee res ponsible for this document is Technical Committee UNBS/TC ###, [name of committee] , 
Subcommittee SC ##, [name of subcommittee] . 
This second/third/… edition cancels and replaces the first/second/… edition (US nnn-n:yyyy), which has been 
technically revised.   
US nnn consists of the following parts, under the general title Introductory element — Main element :  
  Part n: Part title  
  Part [n+1]: Part title  
  Part [n+2]: Part title  
The purpose of this document is to establish the requirements for the design an d operation of gaming 
machines within the jurisdiction of Singapore and to guide testing and certification bodies on the areas for 
technical compliance for the gaming machines.   
The intent of this document is to ensure that gaming on electronic gaming mac hines occur in a manner that 
is:-  
a. Honest;  
b. Secure;  
c. Reliable; and  CDUS nnnn -n:yyyy  
© UNBS yyyy  – All rights reserved  v 
 d. Auditable.  
 It is not the intent of this document to: -  
a. Mandate a single solution or method to realise an objective;  
b. Limit technology application to gaming equipment;  
c. Limit cre ativity and variety of choice;  
d. Preclude research and development into new technologies equipment or innovative ideas.  
As far as possible, this document specifies what the minimum technical requirements for electronic gaming 
machines are instead of how  the requirements should be met; nor try to mandate a particular solution or 
method as the means to realise the requirements.  
The National Gaming Lotteries Regulatory Board (the “Authority”) is the regulatory authority that supervises 
and regulates the ac tivities of casinos in Singapore. Casino operators are required to be licensed by law and 
must ensure that their gaming machines deployed on the casino floor comply with these technical standards.  
These technical standards are supplementary to and are not  intended to derogate from any provisions in the 
….    and its subsidiary legislations. In the event of any consistency, the provisions in the …………… Act 
(Cap. ….) and its subsidiary legislations shall apply.   
These technical standards are subject to on -going review, and where necessary or deemed appropriate, the 
Authority reserves the right to unilaterally amend or re -issue this document without notice. The foreword  shall 
appear in each standard. It shall not contain requirements, figures or tables.  
In add ition to the appropriate boilerplate text (see above) give the designation and name of the committee that 
prepared the standard, together with as many of the following as are appropriate:  
— an indication of any other international organization that has con tributed to the preparation of the 
standard;  
— a statement that the standard cancels and replaces other documents in whole or in part;  
— a statement of significant technical changes from the previous edition of the standard;  
— the relationship of the stand ard to other standards or other documents;  DUS 2660 :2022  
vi © UNBS yyyy  – All rights reserved  
 — a statement specifying which annexes are normative and which are informative.  CDUS nnnn -n:yyyy  
© UNBS yyyy  – All rights reserved  vii 
 Introduction  
1.1.1  Progressive Gaming Devices  
1.1.2  General Statement  
1.1.2.1  This chapter shall govern the requirements for all progressive components  submitted for review.  
1.2 Purpose of Standard  
1.2.1 General Statement.   
The purpose of this technical standard is as follows:  
a) To eliminate subjective criteria in analyzing and certifying Progressive Gaming Devices . 
b) To only test those criteria which impac t the credibility and integrity of gaming from both the Revenue 
Collection and game play point of view.  
c) To create a standard that will ensure  that Progressive Gaming Devices  are fair, secure, and able to be 
audited and operated correctly.  
d) To distinguish be tween local public policy and laboratory criteria.  
e) To recognize that non -gaming testing (such as Electrical Testing) should not be incorporated into this 
standard but left to appropriate test laboratories that specialize in that type of testing. Except wh ere 
specifically identified in the standard, testing is not directed at health or safety matters. These matters 
are the responsibility of the manufacturer, purchaser, and operator of the equipment.  
f) To construct a standard that can be easily changed or mod ified to allow for new technology.  
g) To construct a standard that does not specify any particular technology, method or algorithm.  The 
intent is to allow a wide range of methods to be used to conform to the standards, while at the same 
time, to encourage ne w methods to be developed.  
 
1.2.2 No Limitation of Technology.   
One should be cautioned that this document should not be read in such a way that limits the use of future 
technology.  The document should not be interpreted that if the technology is not men tioned, then it is not 
allowed.   
 COMMITTEE DRAFT UGANDA STANDARD  CDUS nnnn -n: yyyy  
 
© UNBS yyyy – All rights reserved  1 
 Gaming equipment — Progressive Gaming Devices — 
requirements   
1 Scope  
The scope of  this CDUS is to cover the requirements for all Progressive Gaming Devices . 
2 Normative references  
.OPTION 1  
1) When there are normative references, they shall be introduced by the following wording.  
The following referenced documents referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, only the edition cite d applies. For undated 
references, the latest edition of the referenced document (including any amendments) applies.  
US ab-c:199x, General title of series of parts  — Part c: Title of part  
US xyz (all parts), General title of the series of parts  
OPTION 2  
2) If no references exist, include the following phrase below the clause title:  
There are no normative references in this document.  
The Normative reference(s)  clause is an optional element that gives a list of the referenced documents cited 
in the document  in such a way as to make them indispensable for the application of the document.  
4 Progressives Defined and Sections Applied  
4.1 General Statement   
A Progressive Gaming Device means, “A gaming device that has an increasing jackpot, based on a function 
of credits that are bet.  This includes games that award progressive jackpots or a ‘pool’ based on criteria other 
than obtaining winning symbols on the machine, such as ‘Mystery Jackpot.’  However, this does not include 
games that incorporate a bonus feature as part of the game theme, which offers awards that increase as the 
game is played and, as well, is not configurable.” Chapters 1, and 2 of this document shall set forth the 
technical requirements for the following types of progressives.  Chapter 3  only ap plies to multi -site progressive 
games:   
a. Stand -Alone Progressive Gaming Devices  is a single progressive game that is not a part of a link;  
b. Multiple Gaming Device (Linked) Progressives  is a ‘linked progressive’ where  one (1) or more gaming 
device(s) th at offer common progressive jackpot(s) which are linked to a progressive controller within a single 
casino location; and  DUS 2660 :2022  
2 © UNBS yyyy – All rights reserved  
 c. Multi -Site Progressive Gaming Devices  are interconnected in more than one (1) casino. The purpose of a 
multi -site progressive system  is to offer common progressive jackpot(s) (system jackpot) at all participating 
locations.  
 
4.2  Hardware and Player Safety  
4.2.1 General Statement  
Electrical and mechanical parts and design principals of the electronic associated progressive hardware mus t 
not subject a player to any physical hazards.  The test laboratory shall not make any finding with regard to 
Safety and EMC testing as that is the responsibility of the manufacturer of the devices or those that purchase 
the devices.  Such Safety and EMC testing may be required under separate statute, regulation, law or Act and 
should be researched, accordingly, by those parties who manufacture or purchase said hardware.  The test 
laboratory shall not test for, be liable for, nor make a finding relating to  these matters.  
 
4.2  Environmental Effects on Progressive Integrity  
4.2.1 Progressive Integrity Standard  
The Test Laboratory will perform certain tests to determine whether or not outside influences affect game 
fairness to the player or create cheating op portunities. This certification applies exclusively to tests conducted 
using current and retrospective methodology developed by test Laboratory. During the course of testing, the 
test Laboratory inspects for marks or symbols indicating that a device has un dergone product safety 
compliance testing. The test Laboratory also performs, where possible, a cursory review of submissions and 
information contained therein related to Electromagnetic Interference (EMI), Radio Frequency Interference 
(RFI), Magnetic Inte rference, Liquid Spills, Power Fluctuations and Environmental conditions. Electrostatic 
Discharge testing is intended only to simulate techniques observed in the field being used to attempt to disrupt 
the integrity of Progressive Gaming Devices. Compliance  to any such regulations related to the 
aforementioned testing is the sole responsibility of the device manufacturer. The test Laboratory claims no 
liability and makes no representations with respect to such non -gaming testing. A progressive system shall b e 
able to withstand the following tests, resuming their function without operator intervention : 
a. Electro -Static Interference. Protection against static discharges requires that the progressive 
components be earthed in such a way that static discharge ene rgy shall not permanently damage, or 
permanently inhibit the normal operation of the electronics or other components within the 
progressive system.   Progressive system components may exhibit temporary disruption when 
subjected to a significant electro -static discharge greater than human body discharge, but they shall 
exhibit a capacity to recover and complete any interrupted function without loss or corruption of any 
control or critical data information associated with the progressive system.  The tests wi ll be 
conducted with a severity level of a maximum of 27KV air discharge.  US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  3 
 4.3 Progressive Meter/Display Requirements  
4.3.1 General Statement  
One or more progressive gaming device(s) shall be linked, directly or indirectly, to a mechanical, electrical, or 
electronic device, including the video display, if applicable, that shows the payoff which increments at a set 
rate of progression as credits are wagered.  This device is the Progressive Meter.  For games that contain a 
progressive feature such as ‘Mystery Jackpot’, the payoff does not have to be displayed to the player 
however, information must be available to the player describing the feature . 
4.3.2 Progressive Displays  
A Progressive Meter shall be visible to all players who are playing a device, which shall potentially win the 
progressive amount if the progressive jackpot combination appears, except for ‘mystery jackpots.’ A player 
shall know that he is playing a progressive game and not have to play the max bet amount to find out. The 
above are parameters  that are verified on -site prior to implementation. The following rules apply to all 
Progressive Meter displays:  
a) The progressive meter shall display the current total of the progressive jackpot in the monetary value or 
credits (the monetary value shall vary for Multi -Site Progressive Displays.) Because the polling cycle 
does cause a delay, the jackpot meter need not precisely show the actual monies in the progressive 
pool at each instance, see also Types of Updating Displays , section 4. 3.3.  This rule does not apply to 
‘Mystery Jackpots.’  
Note:  Any device that has a feature that doubles, or triples, etc. any win shall have a sign that states the 
progressive award will not be doubled or tripled if won during the feature if  this is  the intention.   
 
4.3.3  Types of Updating Displays  
The use of odometer and other “paced” updating displays are allowed.  The progressive meter shall display 
the winning value within 30 seconds of the jackpot being recognized by the central system.  In the  case of 
the use of paced updating displays, the system jackpot meter shall display the winning value after the jackpot 
broadcast is received from the central system.  
 
4.3.4 Progressive Display Digital Limitations  
If the progressive meter(s) progresses to  its maximum display amount, the meter shall freeze and remain at 
the maximum value until awarded to a player. This can be avoided by setting the jackpot limit in accordance 
with the digital limitations of the sign.  
 
4.3.5 Alternating Displays  
If this rule  prescribes multiple items of information to be displayed on a gaming device or progressive meter, it 
is sufficient to have the information displayed in an alternating fashion.  DUS 2660 :2022  
4 © UNBS yyyy – All rights reserved  
 4.4  Progressive Controller Requirements  
4.4.1 General Statement  
Any progress ive system shall meet the game standards set forth in this document and the Standards for 
Gaming Devices. The requirements of this Section are intended to apply equally to one progressive gaming 
device linked to a progressive controller or is internally co ntrolled, as well as several progressive gaming 
devices linked to one progressive controller within one casino or multiple casinos.  
 
4.4.2 Progressive Controller Description  
Progressive controller means hardware and software that controls communications a mong the devices that 
calculate the values of the progressive jackpots and displays the information within a progressive gaming 
device link and on the associated progressive meter.  The controller shall calculate the values of the 
progressives and display the information within a progressive gaming device link and the associated 
progressive meter (if applicable, progressive controllers shall be internally controlled by the game’s control 
program). A progressive controller shall consist of more than one disc rete component and includes but is not 
limited to PC -based computers, wiring, interface boards and collection nodes, etc.  
 
4.4.3 Setting the Jackpot Amounts  
The method by which system jackpot parameter values are modified or entered is to be secure.  All 
progressive gaming devices or any approved progressive system component shall display, upon request, the 
following information for each progressive prize offered (if applicable):  
a) CURRENT VALUE: current prize amount;  
b) OVERFLOW: amount exceeding limit;  
c) HITS: n umber of times this progressive was won;  
d) WINS: total value of wins for this progressive or a history of the last 25 progressive hits;  
e) BASE: starting value;  
f) LIMIT: jackpot limit value (if the Jackpot is capped at a maximum limit, this standard does not requ ire 
to add the overflow amounts to the next starting value and will be determined on a casino -by-casino 
basis);  
g) INCREMENT: percentage increment rate;  
h) SECONDARY INCREMENT: percentage increment rate after limit is reached;  
i) HIDDEN INCREMENT: percentage increm ent rate for the reserve pool  
j) RESET VALUE: the amount the progressive resets to after the progressive is won; and  
k) The participating gaming devices.  
Note: Any change to the jackpot amount must conform to the local Internal Control procedures.  US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  5 
 4.4.4 Progre ssive Controller Program Interruption  
After a program interruption ( e.g. Power  down), the software shall be able to recover to the state it was in 
immediately prior to the interruption occurring.  
 
4.4.5 Inter nal Link Progressive Controller  
For link progres sives where the progressive controller is part of the game software (internal link), all games on 
the link shall conform to the following criteria:  
a) Require a secure method for configuring each game on the link.   
b) Changes to progressive settings shall not b e made, unless it involves a secure method.  
c) Each game on the link shall be uniquely identified.  
d) Only one (1) game on the link shall function as the master progressive controller.  
e) If the game configured as the master controller becomes inoperative, all gam es on the link must tilt.   
f) If any game on the link loses communication with the master controller, that game must tilt.  
g) The progressive link shall be capable of displaying all progressive parameters (i.e. contribution, reset 
amount, levels, etc.).  
4.4.6 Progressive Resumption  
On program resumption, the following procedures shall be performed as a minimum requirement:  
a) Any communications to an external device shall not begin until the program resumption routine, 
including self -tests, is completed successfull y; 
b) Progressive System control programs shall test themselves for possible corruption due to failure of 
the program storage media. The authentication shall use the checksum; however, it is preferred that 
the Cyclic Redundancy Check (CRC) calculations are us ed as a minimum (at least 16 bit).  Other test 
methodologies shall be acceptable if at a comparable level of integrity; and  
c) The integrity of all critical memory shall be checked.  
 
4.4.7 Communications for Signaling of a Jackpot  
There shall be a secure, two -way communication protocol between the main game processor board and 
progressive. In addition, the progressive system shall be able to:  
 
a) Send to the electronic gaming device the amount that was won for metering purposes; and  
b) Constantly update the progress ive display as play on the link is continued.  
 
4.4.8 Monitoring of Credits Bet  
During the 'Normal Mode' of progressive gaming devices, the progressive controller shall continuously monitor 
each device on the link for credits bet and shall multiply the same  by the rate of progression and denomination 
in order to determine the correct amounts to apply to the progressive jackpot.  This shall be 99.99% accurate.  DUS 2660 :2022  
6 © UNBS yyyy – All rights reserved  
 4.4.9 Access to the Progressive Controller  
Each progressive controller used with a gaming device sha ll be housed in a secure environment allowing only 
authorized accessibility. Access to the controller must conform to the local Internal Control procedures.  
 
4.4.10 Progressive Controller Required Meters  
The progressive controller or other approved progres sive system component shall keep the following 
information in non -volatile memory, which shall be displayed on demand.  Additionally, meters shall be 
99.99% accurate:  
a) The number of progressive jackpots won on each progressive level if the progressive disp lay has 
more than one (1) winning amount;  
b) The cumulative amounts paid on each progressive level if the progressive display has more than one 
(1) winning amount;  
c) The maximum amount of the progressive payout for each level displayed;  
d) The minimum amount of th e progressive payout for each level displayed;  
e) The rate of progression for each level displayed; and  
 
4.4.11 Controller and Display Functions During Progressive Jackpot Win  
When a progressive jackpot is recorded on an electronic gaming device, which is att ached to the progressive 
controller, the progressive controller shall allow for the following to occur on the device and/or progressive 
display:  
a) Display of the winning amount;  
b) Display of the electronic gaming device identification that caused the progres sive meter to activate if 
more than one (1) electronic gaming device is attached to the controller;  
c) The progressive controller shall automatically reset to the reset amount and continue normal play; 
and 
d) The new progressive values that are current on the l ink. 
 
4.4.12 Base Progressive Jackpot Amount  
The initial amount of a progressive jackpot shall begin at or above an award for that particular gaming device 
that makes the entire meter payout greater than the minimum percentage requirement, see also “Percen tage 
Requirements” in Standards for Gaming Devices.  
 
4.4.13 Progressive Controller Error Conditions  
When a controller error occurs, it is preferred that it alternates the displays, or equivalent, between the current 
amount and an appropriate error message  that is visible to all players, or can alert the casino to the error 
condition. If the following events occur, the progressive controller must convey the appropriate signal to 
disable the games using the progressive, and an error shall be displayed on the  progressive meter, other 
approved progressive system component or gaming device:  US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  7 
 a) During a ‘communication failure’ between the game and the controller or anywhere within the progressive 
controller system: (see also Communication Fai lure, section 5.2.8) 
b) When there have been multiple communication errors;  
c) When a controller checksum or signature has failure;  
d) When a controller’s RAM or PSD (program storage device) mismatch or failure occurs;  
e) When the jackpot configuration is  lost or is not set;  
f) If there has been an unreasonable amount of credits bet (an unreasonable amount of credits bet is 
defined by the progressive set up which is based on the number of bets and number of machine(s)); 
or 
g) If the game meters are validat ed against the controller's meters (via communications between the game 
board and controller) and they do not reconcile.  
 
4.4.14 Transferring of Progressive Jackpot  
The progressive controller shall have a secure means of transferring a progressive jackpot and/or prizes to 
another progressive controller or other approved progressive system component. Transferring of progressive 
jackpots must meet the local Internal Control procedures.  
 
4.4.15 Jackpot Limits  
The controller shall be configured with a limit on the jackpot of a progressive gaming device, if the limit 
imposed is greater than the jackpot payout on the gaming device at the time the limit is imposed.  This limit 
shall be posted on or near the device or devices to which the limit applies.  
4.4.16 Time  Limits  
Progressive controller shall have the ability to set time limits that limit the time the progressive is available.  
 
4.5  Progressive Jackpots  
4.5.1 General Statement  
A Progressive Jackpot is an award for a winning or non -winning (e.g. mystery jackp ot) play of the game, as 
defined in Progressives Defined and Sections Applied , section 4.1, of this document. A bonus game where 
certain circumstances are required to be satisfied, prior to awarding a fixed bonus prize, is no t a progressive 
gaming device and is not subject to these procedures.  
 
4.5.2 Swapping Progressive Levels  
For progressives offering multiple levels of awards, the player must always be paid the higher progressive 
amount, if a particular combination is won that should trigger the higher paying award. This shall occur when a 
winning combination shall be evaluated as more than one of the available paytable combinations (i.e., a Flush 
is a form of a Straight Flush and a Straight Flush is a form of a Royal Flush ). Therefore, there shall be DUS 2660 :2022  
8 © UNBS yyyy – All rights reserved  
 situations where the progressive levels shall be swapped to ensure the player is being awarded the highest 
possible progressive value based on all combinations the outcome shall be defined as.  
 
4.5.3 Gaming Device Requirements when any Progressive is Awarded  
When a progressive prize has been awarded, the gaming device or other approved progressive component 
shall perform the following:  
a) An appropriate message shall be displayed;  
b) Unless the prize is transferred to the player’s cr edit meter the software and game shall lock -up until 
the award has been paid by the attendant; and  
c) All progressive related meters must be updated, see also “ Standards for  Gaming Devices,” Section 
4.4.1  ‘Electronic Accounting Meters.’  
Note: A light or alar m shall alert the player upon winning a mystery jackpot, to prevent a player from 
abandoning an unclaimed award.  
 
4.5.4 Progressive Gaming Device Metering Requirements  
The electronic gaming device is required to update its electronic meters to reflect the winning progressive 
jackpot amount consistent with these procedures and the electronic accounting meter requirements in section 
four of Standards for  Gaming Devices.  Progressive wins shall be added to the credit meter if either:  
a) The credit meter is maintai ned in monetary value or credits;  
b) The progressive meter is incremented to whole credit amounts; or  
c) The prize, in monetary value, is converted to credits on transfer to the player’s credit meter in a 
manner that does not mislead the player.  The conversion from monetary value to credits must always 
round up.  
Note: Progressives exceeding the  local income tax limit, if one exists, shall require payment by an attendant.  
 
4.6  Progressive Awards Paid by Over Time  
4.6.1 Notice of Payment Over Time  
Any casino lic ensee or group of casino licensees which offers an award paid over time shall comply with the 
display and sign requirements or internal control requirements, except that the display or sign need not 
include the cash equivalent value.  In addition, clear an d conspicuous notice of the following shall be provided 
to all players:  
a) That the displayed jackpot will be paid over time and not in one lump sum; and  
b) The period of time covering the payments.  
 US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  9 
 4.7 Progressive Percentage Requirements and Odds  
4.7.1 Genera l Statement  
The rules within this section shall not supersede the Percentage and Odds rules outlined in the Standards for 
Gaming Devices.  
4.7.2 Linked Gaming Device Odds  
Each device on the link shall have the same probability of winning the progressive, a djusted for the 
denomination played.   For instance, the probability shall remain the same for multiple denomination games 
based, on the monetary value of the wager (e.g.1. A two (2) coin UGX 1 game has the probability of one (1) in 
10,000 and a two (2) coi n, UGX 2 game on the same link has the probability one (1) in 5,000.)  
 
4.8 Independent Control Program Verification  
4.8.1.The controller software and any associated critical software used within the progressive system shall 
have the ability to allow for an  independent integrity check of the device’s software from an outside source and 
is required for all control programs that shall affect the integrity of the game.  This must be accomplished by 
being authenticated by a third -party device, which shall be emb edded within the game software (see NOTE 
below), by having an interface port for a third -party device to authenticate the media, or by allowing for 
removal of the media such that it can be verified externally.  This integrity check will provide a means for  field 
verification of the software to identify and validate the program. The test laboratory, prior to device approval, 
shall approve the integrity check method . 
5. Multiple Site Progressive Requirements  
5.1.1  General Statement  
In addition to Chapters 4 of this document, this clause 5  shall set forth the technical requirements for “Multi -
Site Progressive Gaming Devices.”  Multi -site progressive gaming devices are interconnected in more than 
one casino. The purpose of a Multi -site progressive system is to offer a common progressive jackpot (system 
jackpot) at all participating locations.  
5.1.2 Phases of Approval  
The approval of a "Multi -Site" system shall be certified in two phases:  
a) Initial laboratory testing, where the laboratory will test the integrit y of the gaming device(s) in conjunction 
with a progressive system in the laboratory setting with the equipment assembled; and  
b) On-site certification where the progressive communications and set up are tested on the casino floor prior 
to implementation.  
5.2 Multi -Site Central Computer Requirements  
5.2.1  General Statement  
Any casino licensee shall be prepared to participate and submit a  Multi -site progressive slot system for 
approval a system of accounting and internal controls to the Uganda Lotteries and  Gaming Regulatory Board, DUS 2660 :2022  
10 © UNBS yyyy – All rights reserved  
 specifying the manner in which participating casino licensees will satisfy the requirements of the Standards for 
Gaming Devices concerning the operation of gaming devices.  
 
5.2.2 Location of Central Monitoring System  
The office co ntaining the central computer shall be equipped with a surveillance system that must meet the 
Internal Control procedures.  
 
5.2.3 Method of Communication for Multi -Site Gaming Devices  
It is recommended that the method of communication be a non -shared, ded icated line or equivalent. Dial -tone 
systems may used as long as devices at the local site would not be able to be disabled from another outside 
line or manipulated by any other means.  When the method of communication is a shared line, appropriate 
encrypt ion and security must be in place to avoid corruption or compromise of data.  
 
5.2.4 Data Collection Requirement  
Multi -site systems shall ensure that security information and the amounts wagered information is 
communicated, at least once every 60 seconds fo r terrestrial lines (dedicated phone lines), and a reasonable 
amount of time for Radio Frequency, from each participating device to the central computer system.  
5.2.5 Multi -Site Encryption Method  
All Multi -Site property systems shall utilize an encryption  method that has been approved by the Laboratory.  
Such encryption method shall include the use of different encryption “keys” or “seeds” so that encryption can 
be changed in a real -time fashion.  
 
5.2.6 Multi -Site Monitoring and Other On -Line System Requi rements  
The on -line provision is to be able to monitor the meter readings and error events of each device regardless of 
any outside monitoring system.  Therefore, the on -line security system requirement when gaming devices are 
in play is not altered in any  way.  
 
5.2.7 Central Monitoring System Power Supply  
 
The central computer site shall be equipped with non-interruptible  power supply that will allow the central 
computer to conduct an orderly shutdown  if the power is lost.   Should the system utilize hard  disk peripherals, 
the central computer shall be capable of on line data redundancy.  
 
5.2.8 Communication Failure  
A gaming device shall immediately disable itself and suspend play if communication is lost to the local 
collection unit hub.  The gaming devi ce may resume play only when communication to the local hub is 
restored.  If the communication is lost between the local hub and the central computer, the gaming device may 
continue to play provided the progressive information from all games connected to t he local hub is buffered.  
Once the local hub’s buffer is full, the hub must disable games that are connected to it.  Upon re-establishing  
communication with the central computer, the hub must accurately relay all buffered progressive information 
to the ce ntral system and the system wide totals are to be updated; not withstanding this rule if the 
communication is lost for more than 24 hours and the site must be shut down.  
 
5.2.9 Central Monitoring System Required Reports  
Any "Multi -Site" system shall supply , as requested, the following reports:  
 
a) PROGRESSIVE SUMMARY: A report indicating the amount of, and basis for, the current jackpot 
amount (the amount currently in play);  
b) AGGREGATE REPORT: A report indicating the balancing of the system with regard t o system wide 
totals and 
c) PAYOFF REPORT:  A report that will clearly demonstrate the method of arriving at the payoff amount.  This US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  11 
 will include the credits contributed beginning at the polling cycle, immediately following the previous jackpot 
and will in clude all credits contributed up to and including the polling cycle which includes the jackpot signal.  
 
Note:  Credits contributed to the system after the jackpot occurs in real -time, but during the same polling 
cycle, shall be deemed to have been contribu ted to the progressive amount prior to the jackpot.  Credits 
contributed to the system subsequent to the jackpot message being received, as well as credits contributed to 
the system before the jackpot message is received by the system, but registered after  the jackpot message is 
received at the system, will be deemed to have been contributed to the progressive amount of the next 
jackpot, if applicable.  
 
5.2.10  Multi-Site System Meter Readings  
All meter reading data shall be obtained in real time in an on -line, automated fashion.  When requested to do 
so, the system shall return meter readings on all gaming devices attached to the system. The meter readings 
shall be identical to the meter information retained in the gaming device(s) accounting meters.  Manua l 
reading of meter values may not be substituted for these requirements. The meter, in either credit or monetary 
value, required is as follows:  
 
a) Credits Bet shall be defined as all amounts wagered.  
 
Note:  The purpose of the above credits bet meter rea ding is to verify and compare the progressive 
amount(s) in conjunction with the rate of progression.  
 
5.2.11  Multi -Site System Door Monitoring  
The Multi -Site Progressive system shall have the ability to monitor entry into the front door of the gaming 
devic e and report it to the central system IMMEDIATELY.  
 
5.2.12  Jackpot Win During Poll Cycle  
If a jackpot is recognized in the middle of a System -Wide Poll Cycle, the overhead display may contain a 
value less than the aggregated jackpot amount calculated by t he central system.  The credit values from the 
remaining portion of the poll cycle will be received by the central system but not the local site, in which case 
the jackpot amount paid will always be the higher of the two reporting amounts.  
 
5.3 Multi -Site Progressive Procedures  
5.3.1 General Statement  
Procedures shall be developed, implemented and documented for the following.   
These reports shall  adequately document the procedures, be generated and retained:  
 
a) Reconciliation of meters and jackpot payou ts; 
b) Collection drop of gaming device funds;  
c) Jackpot verification and payment procedures that include a Commission Agent be present for 
independent prize verification and payment.  
d) System maintenance;  
e) System accuracy;  
f) System security;  
g) System failures including:  
i) The local hub;  
ii. The central site;  
iii. Failures in communications; and  
iv. Backup and recovery.  
 DUS 2660 :2022  
12 © UNBS yyyy – All rights reserved  
 5.4 Multi -Site Jackpots  
5.4.1 Multiple Jackpots During the Same Polling Cycle  
When multiple jackpots occur, where there is no def initive way of knowing which jackpot occurred first, they 
will be deemed to have occurred simultaneously; and therefore, the gaming regulator shall adopt procedures 
for payment of such jackpot occurrences.   In addition, if there is a communication failure  as described in 
Communication Failure, clause 5 .2.8, a winning player wagering at a non -updated site may also be eligible to 
a jackpot amount.  US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  13 
  DUS 2660 :2022  
14 © UNBS yyyy – All rights reserved  
 Annex  A 
(normative)  
 
Annex title  
A.1 General  
Annexes  shall appear in the order in which they are cited in the text. Each annex shall be designated by a 
heading comprising the word “Annex” followed by a capital letter designating its serial order, beginning with 
“A”, e.g. “Annex  A”. The annex heading shall be followed by the indication “(normative)” or “(informativ e)”, and 
by the title, each on a separate line. Numbers given to the clauses, subclauses, tables, figures and 
mathematical formulae of an annex shall be preceded by the letter designating that annex followed by a full -
stop. The numbering shall start afresh  with each annex. A single annex shall be designated “Annex  A”. 
Normative annexes  give provisions additional to those in the body of the document. Their presence is 
optional. An annex’s normative status (as opposed to informative) shall be made clear by th e way in which it is 
referred to in the text, by an indication in the table of contents and under the heading of the annex.  
Informative annexes  give additional information intended to assist the understanding or use of the document. 
They shall not contain requirements, except as described in the following paragraph. Their presence is 
optional. An annex’s informative status (as opposed to normative) shall be made clear by the way in which it is 
referred to in the text, by an indication in the table of conten ts and under the heading of the annex.  
Informative annexes shall contain optional requirements. For example, a test method that is optional shall 
contain requirements but there is no need to comply with these requirements to claim compliance with the 
docum ent. 
A.2 Clause  
A.2.1  Subclause (level  1) 
A.2.1.1  Subclause (level  2) 
A paragraph.  
A.2.1.1.1  Subclause (level  3) 
A paragraph.  
A.2.1.1.1.1  Subclause (level  4) 
A paragraph.  
A.2.1.1.1.2  Subclause (level  4) 
A paragraph.  
A.2.1.1.2  Subclause (level  3) 
A paragrap h. US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  15 
 A.2.1.2  Subclause (level  2) 
A paragraph.  
A.2.2  Subclause (level  1) 
A paragraph.  
A.3 Clause  
A.3.1  A level  1 subclause without a title.  
A.3.1.1  A level  2 subclause without a title.  
A.3.1.1.1  A level  3 subclause without a title.  
A.3.1.1.1.1  A level  4 subcl ause without a title.  
A.3.1.1.1.2  A level  4 subclause without a title.  
A.3.1.1.2  A level  3 subclause without a title.  
A.3.1.2  A level  2 subclause without a title.  
A.3.2  A level  1 subclause without a title.  DUS 2660 :2022  
16 © UNBS yyyy – All rights reserved  
 Annex  B 
(informative)  
 
Which styles correspond to which element  — Quick reference guide  
Element  Style name  a 
Any element of text for which the correct style to use is not known with certainty or 
for which no other style of the template is suitable  Special  
Annex  heading, status and title  ANNEX  
Bibliography  reference entry  bibliography  
 title zzBiblio  
Clause  body of document  Heading  1* 
 annexes  a2 
Definition  Definition  
Displayed mathematical 
and chemical formulae  formula  Formula  
variables list  dl 
Example  Example  
Figure  footnote  Figure footnote  
 note Note  
 title Figure title  
Figure footnote  Figure footnote  
Footnote  reference  Footnote Reference*  
 text Footnote Text*  
Foreword  text Foreword  
 title zzForeword  
Index  entry  Index 1*  
 entry heading  Index Heading*  
 “Index” title  zzIndex  
Introduction  text Normal*  
 title Introduction  
List ordered  level 1 List Number*  
  level 2 List Number  2* 
  level 3 List Number  3* 
  level 4 List Number  4* 
 unordered  level 1 List Continue*  
  level 2 List Cont inue 2* 
  level 3 List Continue  3* 
  level 4 List Continue  4* US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  17 
 Element  Style name  a 
Normative reference  cross -reference to a normative reference defined in the 
“Normative references” clause  ExtXref  
in “Normative references” clause  RefNorm  
Note integrated in text, figures and tables  Note  
Paragraph  Normal*  
Subclause with title  annexes  level 1 a3 
  level 2 a4 
  level 3 a5 
  level 4 a6 
 body of text  level 1 Heading  2* 
  level 2 Heading  3* 
  level 3 Heading  4* 
  level 4 Heading  5* 
  level 5 Heading  6* 
Subclause witho ut title  level 1 p2 
 level 2 p3 
 level 3 p4 
 level 4 p5 
 level 5 p6 
Table  note Note  
 table footnote  See Table footnote.  
 text 9 pt (recommended)  Table text (9)  
  8 pt, for large tables  Table text (8)  
  7 pt, for very large tables  Table text (7)  
  10 pt (not recommended)  Table text (10)  
 title Table title  
Table footnote  identification letter of the table footnote  TableFootNoteXref  
 reference  TableFootNoteXref  
 text Table footnote  
Table of contents  “Contents” title  zzContents  
 entries  level 1 TOC  1* 
  level 2 TOC  2* 
  level 3 TOC  3* 
  level 4 TOC  4* 
  level 5 TOC  5* 
  level 6 TOC  6* 
  unnumbered elements  TOC  9* DUS 2660 :2022  
18 © UNBS yyyy – All rights reserved  
 Element  Style name  a 
Term  cross -reference to a term defined in the “Terms and 
definitions” clause  Defterms  
 in the “Terms and definitions” clause in  a terminology 
document  Term(s)  
 reference number  TermNum  
a Style names marked with an asterisk are based on predefined Microsoft styles. These styles are recognized by the 
various linguistic versions of Word and their names shallbe translated automatica lly into the language of the Word version 
which you are using. For these Microsoft styles, the user shallneed to derive the correspondence between the name displayed 
and that given in this table; for example, if the same document is opened using English an d French versions of Word, text 
styled “Footnote Reference” in the English version is called “Appel de note” in the French version.  
 US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  19 
 Bibliography  
[1] ISO ##### -#, General title — Part #: Title of part  
[2] ISO ##### -##:20##, General title — Part ##: Title  of part  
A Bibliography , if present, shall appear after the last annex. The drafting rules set out in ISO  690[11] shall be 
followed.  
The bibliography shall include  
— documents that are not publicly available,  
— documents which are only cited in an informa tive manner, and  
— documents which have merely served as bibliographic or background material in the preparation of the 
document.  
For online referenced documents, information sufficient to identify and locate the source shall be provided. 
Preferably, the p rimary source of the referenced document should be cited, in order to ensure traceability. 
Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The 
reference shall include the method of access to the re ferenced document and the full network address, with 
the same punctuation and use of upper case and lower case letters as given in the source (see ISO 690-2[12]). US nnnn -n: yyyy  
© UNBS yyyy – All rights reserved  21 
 Certification marking  
Products that conform to Uganda standards shall be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be used only by those licensed under the certific ation mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requirements of th at standard under a system of supervision, control and testing in accordance with the 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS for conformity to that standard.  
Further parti culars of the terms and conditions of licensing shall be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 US nnnn -n: yyyy    
 
ICS nn.nnn.nn  
Price based on nn pages  
© UNBS yyyy– All rights reserved