ZS-6123BP
GP-IB Adapter
User’s Manual

Ver. 1.0

Zip Code : 183-0027
2-13-37, Honmachi, Fuchu, Tokyo, Japan
TEL : +81-(0)42-368-2126 FAX : +81-(0)42-364-0067
URL http://www.zenisu.co.jp/

1◆ Table of contents ◆1.Outline ______________________________________________3
2.Features _____________________________________________3
3.Specification _________________________________________________3
4.Appearance __________________________________________________4
5.Signal and Switch ____________________________________________5
6.Input and Output data _________________________________9
7.Connecting table _____________________________________________12
8.Warranty _____________________________________________________14

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1. Outline
ZS-6123BP is a GP-IB adapter with 8bit bidirectional data bus, 8bit address signal, andother signals.
ZS-6123BP can be easily connected between GP-IB bus signal and parallel signal such asBCD.

Model

GP-IB signal

ZS-6123BPDATA signal

GP-IBFeature

FC-50L(Standard)

It is able to connect GP-IB cable directly.

Type of connector:
GP-IB ：57LE-20240-77COD35G (DDK) : IEEE488 standard
FC-50L：FAP-5001-1202-0BF (Yamaichi) : L-angle 50-conductor flat cable

2. Features(1) Timing and other design is unnecessary.
(2) I/O data can be expanded up to 256 bytes.
(3) It can be expanded address by attaching an external address counter.

3. Specifications(1) This product compliant with GP-IB interface standard (IEEE Std 488-1978)(2) Interface function: SH1, AH1, T6L, 4SR1, RL1, PP0, DC1, DT1, C0(3) Input operation: It becomes a talker and sends the output data of the connected device tothe GP-IB. Signal level: TTL (fan-in = 1)
(4) Output operation: It becomes a listener and sends the input data of the GP-IB to theconnected device. Signal level: TTL (fan-out = 10)(5) Power: +5V 0.5A(6) Size (Board): 114 x 155 x 30 (H) mm(7) Weight: 150g or less
(8) Accessories
ModelNameTypeQuantity

CN4 Connector

FAS-5001-2101-0BF (Yamaichi)

1CN7 Cable

For DC power, length 60cm

1ZS-6123BP

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4. Appearance

Connector
Model

ZS-6123BP

C1

CN4

CN3

CN7GP-IB

FC-50LB8B-XH-A

B4B-XH-A

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5. Signal and Switch
5.1 Input signal

Chart 5.1
Note) Output driver is equivalent to SN74LS541.

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5.2 Signal description

Input and output in this manual are defined as shown above.
Signal level is TTL except for LED lighting.
D0 to D7

： Bidirectional bus for I/O data.

A0 to A7

： Address bus, it decodes this signal and select the data of the connected circuit.

HS ENB： When this signal is set to High or Open with the data transfer enable signal,
the GP-IB handshake will be usable.

READ： It is a strobe signal when reading data of the connection circuit to GP-IB.

WRITE： It is a write pulse signal when data from the GP-IB is output to the connection
circuit.

STB1 to 8： It is a status signal when SRQ occurs. It will inform the SRQ to the GP-IBcontroller.
Tf＜2μs・GP-IB data

1

234

HS ENBTh≧0RD

3.5μs≦TRDTRDWR(OUT)： It sends 1 pulse each time when it is received 1 byte of data from GP-IB.
The device latches the signal of data bus by “WR” signal and “AND” signal ofaddress signal.

GP-IB data

1

2HS ENB
Tdh > 0.25μs・

WRTWR≒1・Tdf > 0.25μs・634

DATA CR(IN)： When input is set to LOW level at talker, CR code(ASCII) is sent out.

DATA LF(IN)： When input is set to LOW level at talker, LF code(ASCII) is sent out.

DATA END(IN)： When input becomes the HIGH level from the LOW level, talker
operation is stop. It connects the gate signal of the last byte and EOIis output.

STB1 to STB8(IN) ： It inputs the status data (negative logic) to the controller when
SRQ occurs.

*1: Set”1” when SRQ occurs and become “0” after serial polling.
REQUEST(IN)： At the rising of this signal, SRQ is generated.

SRQ： ZS-6123BP generates SRQ when REQUEST signal becomes LOW level fromHIGH level. The controller performs serial polling and checks the status byte.
After serial polling is completed, SRQ is reset.

TLK(OUT)： It becomes LOW level when it is a talker.

LSN(OUT)： It becomes LOW level when it is a listener.

BUSY(OUT)： It becomes the LOW level at the falling of TLK output signal and return to theHIGH level at the falling of DATA END input signal. The BUSY signal is asignal indicating that is being sent and is used for data hold signal of theoutput device.

GP-IBデータ
GP-IBDATATLKDATA END

BUSY7ADR-CR(OUT) ： This signal clears the external address counter.
ADR-CK(OUT) ： This is clock signal for external address counter.
Please count up at the rising of this signal.
CLR(OUT) ： When receiving SDC command or DCL command from the GP-IB controller,
it outputs 2µs negative pulse.
TRG(OUT) ： When receiving GET command from the GP-IB controller, it outputs 2µs
negative pulse.
RESET(OUT) ： It outputs the LOW level signal when the power ON and reset signal is input.
RESET(IN) ： Input for external reset switch with pull-up resistor 10kΩ.
LED TLK(OUT) ： Output for the lighting the external LED with current limiting resistor 1kΩ.
It becomes the LOW level at the talker.
LED LSN(OUT) ： Output for the lighting the external LED with current limiting resistor 1kΩ.
It becomes the LOW level at the listener.
LED SRQ(OUT) ： Output for the lighting the external LED with current limiting resistor 1kΩ.
It becomes the LOW level when SRQ is generated.
LED RMT(OUT) ： Output for the lighting the external LED with current limiting resistor 1kΩ.
It becomes the LOW level when it is remote operation.

5.3 Address switch of GP-IB device
Set the GP-IB device address of the adapter.
ON12345678

1 to 5 : A d d ress sw itch
6 to 8 : In tern a l clock frequ en cy
In itia l settin g : 1 0 M H z
SW 1O N : "1 "O F F : "0 "A d d ress

C lock select#Frequency

078.125KHz

1156.25KHz

2312.5KHz

3625KHz41.25MHz

52.5MHz

65MHz

710MHzNote) When using an external address switch, please turn off all of this switch.
Note) Although the internal clock frequency is initialized to 10MHz. if it changes to lower thefrequency, the output pulse width such as TRG will be longer.

86.Input / Output data
BCD and binary parallel signal equipment can be easily transfer data to PC via GP-IB
interface by adding address decoder, data latch circuit and gate circuit. It is necessary to use
the signal of ZS-6123BP data buses D0 to D7, address bus A0 to A7, WR, RD, ADR-CR,ADR-LF in this case.

6.1 Example for expanding output data.

Chart 6.1Note) In this circuit example, the number of output data can be expanded up to 8 bytes byadding a latch circuit LS273.

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6.2 Example for expanding input dataChart 6.2Note) In this circuit example, CR and LF are used as delimiters, and EOI is output at the sametime as LF. The STROBE signal for the final data is input to DATAEND. When the signal is
not input, ZS-6123BP will continue to send data to the GP-IB.

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6.3 How to generate delimiters
Connect the decoder output of the external additional circuit to DATACR, DATALF,DATAEND according to the code of delimiter.

GP-IB DATALFCRLast data1) When outputting EOI at the same time as CR, LF code and LF, connect the strobe before
the last data of data strobe created by the decoder to DATACR and the strobe of the last
data to DATALF and DATAEND. It is able to be sent to up to 254 bytes of data to GP-IB.

GP-IB data

Last dataCRLF

EOI2) In case of EOI delimiter.
Connect to the DATAEND of the last data of the data strobe created by the decoder.
It is able to be sent up to 256 bytes of data to GP-IB.

GP-IB data

Last data

EOI

117.Connecting table
7.1 CN1 GP-IB connector signal table
SignalPin numberSignal

DIO1113

DIO5DIO2214

DIO6DIO3315

DIO7DIO4416

DIO8

EOI

517REN

DAV

618

GND

NRFD

719

GND

NDAC

820

GND

IFC

921

GND

SRQ

1022

GND

ATN

1123

GND

SHILD

1224

GND

57LE-20240-77COD35G(DDK)127.2 CN4 Connector signal table
SignalPin number

SignalRESERVE

12GND

CLEAR *134GNDRESET *256

GND

TRIGGER

78GND

ADR-CR

910GNDADR-CK

1112

GND

RD

1314

GND

WR

1516

GND

HSENB

1718

GND

BUSY1920

GND

REQUEST

2122

LISTENREMOTE

2324

TALK

STB62526

STB8

STB42728

STB5

STB22930

STB3

DATA-END

3132

STB1

DATA-CR

3334

DATA-LF

D63536D7D43738D5D23940

D3

D04142

D1A64344

A7A44546

A5A24748

A3A04950

A1

FC-50L：FAP-5001-1202-0BF (Yamaichi)
Note) +5V power supply is supplied from the CN7 connector.
Note) Pin number 3 and 5 are reversed in the ZS-6123AP. Please be careful for connecting
to the device.
*1 In the ZS-6123AP, the REST signal.
*2 In the ZS-6123AP, the CLEAR signal.
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7.3 CN3 Connector signal
Please attach this connector when attaching monitor LED and switch to the outside.
Pin numberSignal

1+5V

2

REMOTE LED

3SRQ LED

4TALK LED

5LISTEN LED

6LOCAL SW

7RESET SW

8GND

B8B-XH-A (JST)7.4 CN7 Connector signal
Pin numberSignal

1+5V

2+5V

3GND

4GND

B4B-XH-A (JST)

8. Warranty
If it fails during normal use, we will repair it free of charge as described in this warranty
as below.
1) During the warranty period which is one year from the data of purchase, we will
repair it free of charge in case of malfunction in accordance with instruction manual.
2) It will be charged for extra in the following case, even during warranty period.
Incorrect usage of failure or damage caused by carelessness,Failure or damage caused by improper repair or remodeling.

Failure or damage caused by external factors such as fire, earthquake, othernatural disasters, abnormal voltage and so on.

Change of power supply and voltage.

This warranty provision is effective only in Japan.

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