Date

June 27, 2022

Released- Specification C-band 5W BUC
Model No. NJT8105 series
RF
Frequency

Local
Frequency

IF
Frequency

5.85 to 6.425 GHz

4.9 GHz950 to 1,525 MHz

5.85 to 6.725 GHz

4.9 GHz950 to 1,825 MHz

6.725 to 7.025 GHz

5.76 GHz

965 to 1,265 MHz

Output Power @ 1dB G.C.P.: +37 dBm (5W)
IF Input Interface: N-type / F-type, Female Connector
DC Power / Ref. (10MHz) Input: IF Connector
RF Output Interface: Waveguide, CPR-137G
DC Power Voltage Range: +12 to +30 V

Copyright©
Nisshinbo Micro Devices Inc.

Microwave Business Headquarters-Notice of Proprietary InformationThis document and its contents are proprietary to Nisshinbo Micro Devices Inc.
This publication and its contents may not be reproduced or distributed for any other purpose
without the written permission of Nisshinbo Micro Devices Inc.
Those specifications listed in this document are subject to change at any time.
Title:

Microwave Business Headquarters

Datasheet of NJT8105 series

Reference No.:DS-T8105

Rev.:
02E

Sheet:
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NJT8105 series
Caution
1. While Nisshinbo Micro Devices Inc. (NISD) continually strives to improve the quality and reliability of our products, failures will
occur in microwave products over time. For this reason, it is important that customers fulfill their responsibilities to ensure
designed-in safety – including failsafe functions, redundancy, and measures to prevent malfunctions and the spread of fire –in order to avoid injuries, accidents, or social repercussions resulting from the failure of any products related to satellite
communications on this website (hereinafter, “the product”). Customers must pay careful attention to ensuring the safety of
their equipment.
2. The product is designed and tested to function in accordance with its specifications. Do not use under conditions that deviate
from the product specifications included in the delivery specifications. NISD assume no responsibility and shall not be liable forany injuries, accidents, or social repercussions resulting from the product being in a poor or damaged state because it wasused under conditions that depart from the specifications.
3. The product is covered by a warranty for one year following delivery unless otherwise stipulated in the contract or delivery
conditions. In the event of a failure for which NISD are responsible occurring during the warranty period, NISD undertake torepair or replace the product free of charge. Note, however, that the warranty does not cover failures such as those listed here
(see bullets below), even if they occur within the warranty period. In addition, in the case of a product being repaired or
replaced by us, the starting date for the warranty period is still the original delivery date of the product.
 Failure due to the product being used in conditions other than those stipulated in the data sheet, specification sheet, etc.
 Failure due to modifications or repairs carried out by some entity other than our company
 Failure determined to be the result of unsuitable maintenance or replacement of a consumable item that requires due
maintenance Failure due to circumstances that were unforeseeable given the scientific /technological standards at the time of shipment
 Other failures due to external factors such as fire, earthquake, flood and power supply anomalies for which NISD are notresponsible
In addition, the product warranty is limited to the provision of repair services or replacement at no cost. It does not coversecondary damage (to equipment, business opportunities, profits, etc.) or any other damage that may have resulted fromfailure of the product.
4. The product must be handled appropriately to ensure its continued reliability. Since it can be damaged by the intrusion ofwater, dust, oil, chemicals, etc., it must be given appropriate protection. Even in the case of a product with an airtightconstruction, avoid using it in an environment that exceeds the stated levels of waterproofing/dustproofing. Also, be sure touse connectors and waveguides properly.
If replacement parts such as fans are included, proper maintenance is necessary. To maintain product performance andfunctionality, it is necessary to conduct inspections and maintenance at appropriate intervals and exchange replacement parts
when necessary. Improper inspections or maintenance may result in failure.
In addition, the warranty does not cover the use of the product in areas where salt damage can be expected or where there
is a substantial presence of corrosive gases such as Cl2, H2S, SO2, and NO2. If the product is to be used in such areas, at thetime of installation you must take appropriate steps to protect the product.
5. If the product is to be used with equipment/systems that must meet special quality and reliability standards (aerospaceequipment, medical equipment, power generation control equipment, automotive/railway transportation equipment, safety
equipment, disaster prevention and security equipment, etc.), please consult with our sales staff in advance.
6. Some products contain gallium arsenide (GaAs), classified as a harmful substance. To avoid danger, do not incinerate, crush,or chemically treat the product in such a way that gases or dust are released. When disposing of the product, comply with allapplicable laws and regulations and do not treat it as general industrial waste or household waste.
7. When exporting a product or technology, observe export laws and regulations such as those governing foreign exchange andforeign trade, and obtain any necessary licenses for export, service transactions, etc.
NISD request that you do not use our products or the technical data published on this website for developing weapons of mass
destruction or for any other military purposes or applications.
8. The product specifications in this document are subject to change without notice. If you are considering using a product,delivery specifications must first be settled.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
2

NJT8105 series
ScopeThis BUC is designed for the block up-converter intended for the satellite communication data uplink
application in C-band. It can transmit an RF signal (C-band: 5.85 to 6.425 GHz, 5.85 to 6.725 GHz, or
6.725 to 7.025 GHz) output with up to 5W (+37 dBm) linear as output power @ 1 dB G.C.P. (P1dB). It is
combined a GaAs high power amplifier and a block up-converter with a phase locked local oscillator (4.9
GHz or 5.76 GHz) which is synchronized with external 10MHz reference.
The BUC receives a reference signal (10 MHz) and an IF signal (L-band: 950 to1,525 MHz, 950 to 1,825
MHz, or 965 to 1,265 MHz) input and transmits an RF signal (C-band: 5.85 to 6.425 GHz, 5.85 to 6.725
GHz, or 6.725 to 7.025 GHz) output. It is operated by +24 V DC power (Range: +12 to +30 V) input.
The BUC comes in a single, weatherized housing rated for outdoor use and has either an N-Type or
F-type female connector as IF input, a CPR-137G waveguide flange as RF output.

Fig.1 Functional Block Diagram＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
3

NJT8105 series
Series Model Number

Numbering SystemLine-up＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
4

NJT8105 series
1. Electrical Specifications
#
1.1.

1.2.

1.3.

Items

Specifications

Output RF Frequency Range<Standard C-band>

5.85 to 6.425 GHz<Full C-band>

5.85 to 6.725 GHz<INSAT/Extend C-band>

6.725 to 7.025 GHz

Input IF Frequency Range<Standard C-band>

950 to 1,525 MHz<Full C-band>

950 to 1,825 MHz<INSAT/Extend C-band>

965 to 1,265 MHz

Maximum IF Input Level+13 dBm max.

(without damage)
1.4.

Conversion Type

1.5.

L.O. Frequency

Single, fixed L.O.

<Standard C-band>

4.9 GHz<Full C-band>

4.9 GHz<INSAT/Extend C-band>

5.76 GHz

1.6.

Frequency Sense

Positive

1.7.

Output Power @ 1dB G.C.P. (P1dB)+37 dBm min. over temperature

1.8.

Linear Gain

62 dB nom., 56 dB min.

1.9.

Gain Variation over frequency@ fixed temperature<Standard C-band>

5 dBp-p max. over 575 MHz
2 dBp-p max. over 36 MHz<Full C-band>

5 dBp-p max. over 875 MHz
2 dBp-p max. over 36 MHz<INSAT/Extend C-band>

4 dBp-p max. over 300 MHz
2 dBp-p max. over 36 MHz

1.10.
1.11.

Gain Stability over temperature

5 dBp-p max.

@ fixed frequency

2 dBp-p typ.

ACPR / Regrowth-26 dBc typ.

Modulation Condition:

at 1 MHz offset from modulation center frequency

Output Power: +37 dBm
Modulation: QPSK
Symbol Rate: 1 Msps
Data Type: PN23
FIR filter: RNYQ, α＝0.3＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

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NJT8105 series
#

Items

Specifications

1.12.

Requirement for External Reference[Frequency]

10 MHz (sine-wave)[Input Power]-5 to +5 dBm @ Input port

[Phase Noise]-120 dBc /Hz max. @ 100 Hz-130 dBc /Hz max. @ 1 kHz-140 dBc /Hz max. @ 10 kHz

1.13.

L.O. Phase Noise-60 dBc/Hz max. @ 100 Hz-70 dBc/Hz max. @ 1 kHz-80 dBc/Hz max. @ 10 kHz-90 dBc/Hz max. @ 100 kHz-100 dBc /Hz max. @ 1MHz

1.14.

Spurious @ Pout = +37 dBm<Standard C-band><Full C-band>[In-band]-50 dBc max. @ 5.85 to 6.425 GHz[Receive-band]-70 dBm max. @ 3.625 to 4.2 GHz[Out-of-band]-50 dBc max.

*Note 1[In-band]-50 dBc max. @ 5.85 to 6.725 GHz[Receive-band]-70 dBm max. @ 3.4 to 4.2 GHz[Out-of-band]-50 dBc max.

<INSAT/Extend C-band>[In-band]

1.15.

-50 dBc max. @ 6.725 to 7.025 GHz[Receive-band]-70 dBm max. @ 4.5 to 4.8 GHz[Out-of-band]-50 dBc max.

Receive Band Noise Density<Standard C-band>-87 dBm/4kHz max. @ 3.625 to 4.2 GHz<Full C-band>-87 dBm/4kHz max. @ 3.4 to 4.2 GHz<INSAT/Extend C-band>-87 dBm/4kHz max. @ 4.5 to 4.8 GHz

1.16.

Noise Figure

1.17.

Input Impedance

20 dB max.

<N-type Model>

50 ohms nom<F-type Model>

75 ohms nom.

1.18.

Input V.S.W.R.

2 : 1 max.

1.19.

Output V.S.W.R.

2 : 1 max.

1.20.

Output Load V.S.W.R.
[Recommendation][Non Damage]

1.3 : 1 max.
Infinite : 1＊Above Specifications are subject to change without notice.

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NJT8105 series
#
1.21.

Items

Specifications

DC Power Requirement[Voltage Range][Power Consumption]+24 VDC (+12 to +30 VDC)
40 W typ., 44 W max. @ Pout = +37 dBm
33 W typ. @ No IF signal
2 W max. @ 10 MHz reference off (Mute on)

1.22.

Mute

Shut off the HPA in case of L.O. unlocked or no 10
MHz reference signal.

1.23.

LED Indicator

GREEN: LO locked
RED: LO unlocked(or no 10 MHz reference signal)*Note1: The 2nd harmonics level of IF signal must be lower than -60 dBc at the IDU and IF signal
source output.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

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NJT8105 series
2. Mechanical Specifications
#
2.1.

Items

Specifications

Input Interface

IF / Ref. / DC Power Input:<N-type Model>

Coaxial Connector , N-type Female - 50 ohms

<F-type Model>

Coaxial Connector , F-type Female - 75 ohms

2.2.

Output Interface

Waveguide, CPR-137G (with Groove)

2.3.

Dimension & Housing

149.1 (L) × 134 (W) × 57 (H) mm

without interface connectors and screws[5.87” (L) x 5.28” (W) x 2.24” (H)]

Weight1.37 kg

2.4.

[3 lbs]2.5.

Cooling

Convection Air Cooling

3. Environmental Specifications
#
3.1.

Items

Specifications

Temperature Range (Ambient)[Operating]-40 to +60 ºC[Storage]-40 to +75 ºC

3.2.

Humidity

0 to 100 % RH

3.3.

Altitude15,000 feet (4,572 m)

3.4.

Vibration (Survival)

5 G [49.03 m/s2] (3 axis, 50 Hz to 2 kHz)
1 mm p-p (3 axis, 5 to 50 Hz)

3.5.

Shock (Survival)

30 G [294.20 m/s2] (3 axis)

3.6.

Waterproof / Dustproof

IP 67(IP Code Rating)
3.7.

Regulations

EU Directive (CE Marking)RE - 2014/53/EU
EMC - 2014/30/EU
RoHS - 2011/65/EU + (EU)2015/863
Safety: EN62368-1, EN60950-22

3.8.

MTBF

150,000 hours and more at +60 ºC(by Method of Parts Count Reliability

as Design Condition

Prediction)＊Above Specifications are subject to change without notice.

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NJT8105 series
4. Outline Drawing
4.1.

N-type Model (e.g. NJT8105WN)

CAUTION
Items

Description

Hot Surface

Whole of body and heat sink is hot when this unit is powered, and even after power isdisconnected until it is cooled down.
Do not touch hot surface to avoid a burn hazard.

RF Radiation

A radiation hazard exists if this unit is operated with its RF signal output unterminated.
Do not operate this unit without a load or termination attached to the RF signal output.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

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NJT8105 series
4.2.

F-type Model (e.g. NJT8105WF)

CAUTION
Items

Description

Hot Surface

Whole of body and heat sink is hot when this unit is powered, and even after power isdisconnected until it is cooled down.
Do not touch hot surface to avoid a burn hazard.

RF Radiation

A radiation hazard exists if this unit is operated with its RF signal output unterminated.
Do not operate this unit without a load or termination attached to the RF signal output.

＊Above Specifications are subject to change without notice.

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Rev.:

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NJT8105 series
5. Label
5.1.

Label Outline (e.g. NJT8105WF)

5.2.

Definitions

Serial Number (OSSSSSRYM) - ALPHANUMERIC (9 characters)
A 0 0 0 0 1 A 1 3
M: Prodctuon Month
Y: Prodctuon Year
R: Revision Number
SSSSS: Running Number
O: Overflow Number
O: Overflow Number - ALPHABET (1 character)"A" to "T" except "I" and "O", e.g.: A99999 ⇒ B00001"V" to "Z": Specified Numbers
SSSSS: Running Number - NUMBER (5 digits)"00001" to "99999"
R: Revision Number - ALPHABET (1 character)"A" to "Z" except "I", "O", and "U"
Y: Prodctuon Year - NUMBER (1 digits)"0" to "9", Last Digit of Calender Number
e.g.: 2021:"1", 2022:"2", 2023:"3"・・・・
M: Prodctuon Month - ALPHANUMERIC (9 characters)"1" to "9", "X" as October, "Y" as November, "Z" as December＊Above Specifications are subject to change without notice.

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NJT8105 series
6. Package
6.1.

Individual Package＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

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NJT8105 series
6.2.

Shipping Package＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

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NJT8105 series
6.3.

Enclosed Accessories
O-ring Gasket, Qty (1), Half-type, for Waveguide Flange

Wrench Key, Qty (1), #10-32UNF, Hexagon

Bolts, Qty (8), #10-32UNF L = 1/2”, Hexagon Socket Head, SUS, for Waveguide Flange

Spring Washers, Qty (8), SUS＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
14

NJT8105 series
7. Handling Precautions
7.1.

DANGER

This statement indicates an imminently hazardous situation which, if not avoided, will result indeath or serious injury.
Items
Input Voltage

Description
Only input a DC voltage within the range indicated in specifications.
Do operate with the input voltage range between +12 and +30 V DC power.
When applying higher voltage than specifications (+30 V as maximum voltage
in DC power requirement), it will not only cause this unit failure, but it may also
result in electric shock and fire.

Disassembling

Do not disassemble the unit.
Disassembling will not only cause this unit failure, but it may also result inelectric shock.

7.2.

WARNING

This statement indicates a potentially hazardous situation which, if not avoided, could result indeath or serious injury.
Items

Description

RF Radiation

A radiation hazard exists if this unit is operated with its RF signal output
unterminated.
Do not operate this unit without a load or termination attached to the RF signal
output.

Hot Surface

Whole of body and heat sink is hot when this unit is powered, and even after
power is disconnected until it is cooled down.
Do not touch hot surface to avoid a burn hazard.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
15

NJT8105 series
7.3.

CAUTION

This statement indicates a potentially hazardous situation which, if not avoided, could result inminor or moderate injury. The statement may also be used to indicate other unsafe practices orrisks of property damage.
Items
Disposal

Description
This unit contains gallium arsenide (GaAs), classified as a harmful substance. To
avoid danger, do not incinerate, crush, or chemically treat the unit in such a waythat gases or dust are released.
When disposing the unit, comply with all applicable laws and regulations and do
not treat it as general industrial waste or household waste.

7.4.

NOTE

This statement is used to notify of installation, operation, or maintenance information that is
important, but not hazard-related.
Items
Mounting

Description
Do not block fins of this unit to keep the heat dispassion performance.
Normally the unit should be mounted with long fins face up.

Grounding

To reduce the risk of damage or broken by lightning surge, the unit should begrounded by connecting the ground wire.

TorqueDo not tighten with excessive torque when attaching screws/bolts and connectors.

Management

The following value as tighten torque is recommended.


Screws/Bolts - M4: 1.15 to 1.4 N⋅m#10-32UNF: 2.39 to 2.91 N⋅m
Weatherproof

IF Connector (N-type / F-type): 0.68 to 1.13 N⋅m

The unit mounted in outdoor should be conducted with adequately weatherproof
procedure.
Do seal all of cable connection points from the connector to the cable sheath byusage of self-amalgamating tape.
Ensure the waveguide connection is properly assembled with the suppliedo-ring gasket as accessories. The o-ring gasket is half-type and it is assumed toconnect the unit to a flat waveguide flange (non-grooved waveguide flange).

Input Voltage

Do operate with the input voltage range between +12 and +30 V DC power.
Avoid applying more than the maximum voltage in this range (including ripple
voltage) under any conditions.

Input IF Signal

Do not supply the input IF signal over the maximum level (+13 dBm), which isPowerindicated on the product label.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

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NJT8105 series
Items

Description

Input 10MHz

The 10 MHz reference signal should be supplied with the range between -5 andSignal Power+5 dBm with sine-wave for correctly operation.
Do not supply the signal level of more than +13 dBm, which is indicated on the
product label.

High

It may cause damage and/or degradation of reliability / lifetime to operate theTemperatureunit in a condition where the ambient temperature exceeds the maximum value,

Operation+60 °C, at operating temperature described in the specifications.

Vibration

When vibration and/or shock impact exceeding the conditions described in the/ Shock

specifications is applied, internal parts may be damaged.

Warranty

The unit is covered by a warranty for one(1) year following delivery unlessotherwise stipulated in the contract or delivery conditions.
Repairs may be possible under payment of charge even for the unit whose
warranty period has expired.
Opening, removing, disassembling and modifying any parts and components(including the product label, sealing tape and screws) without fan equipment
will immediately void the warranty.
In any case, the unit of invalid warranty cannot be repaired.

＊Above Specifications are subject to change without notice.

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NJT8105 series
8. Instructions Manual
8.1.

Descriptions
This section describes the information of connectors and etc.

Items

Description

PurposeRF Output

Waveguide: WR-137

The BUC transmits an RF signal of C-band (5.85 to

Waveguide

Flange: CPR-137G

6.425 GHz, 5.85 to 6.725 GHz, or 6.725 to 7.025 GHz)

(with Groove)

output with up to 5W (+37 dBm) linear as output power@ 1 dB G.C.P. (P1dB) via this waveguide.

ChassisM4 Screw

Common chassis ground / frame ground.

IF Input

F-type Female Coaxial

The BUC inputs an IF signal of L-band (950 to 1,525

Connector

Connector, 75 Ohms

MHz, 950 to 1,825 MHz, or 965 to 1,265 MHz), andOR

requires to supply +12 to +30 V DC power and a 10 MHz

N-type Female Coaxialreference signal via this connector.

GroundConnector, 50 Ohms

8.2.

LED

GREEN: L.O. locked

Alarm indicator of PLL unlock status for local oscillator.

Indicator

RED: L.O. unlocked

PLL is unlocked without a 10 MHz reference signal.

Connection and Installation
This section describes basic installation for the BUC.

8.2.1. Mounting Configuration
The Unit can be mounted with OMT or the waveguide filter of the satellite antenna.
When installing the BUC, the following guidelines should be complied:Check factors such as accessibility, cable connection and future expansion on the installation
location.

Plan for access to connector side of the BUC.

Arrange the BUC with the fin face up or side.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

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NJT8105 seriesDo not block fins of this unit to keep the heat dispassion performance.
Normally the BUC should be mounted with long fins face up or side to keep heat dissipation.

When mounting with the OMT or the waveguide filter, thefollowing steps should be complied:
Step 1:

Verify that the groove on the waveguideflange for a gasket is clean.
The enclosed gasket as accessories isfull-type and it is assumed to connect
the BUC to a flat waveguide flange(non-grooved waveguide flange). Insert
the gasket the groove as shown in the
figure on the right.

Step 2:

Secure the OMT or the filter to the BUC by tightening enclosed hexagon socket headbolts (#10-32UNF L = 1/2”) with 2.39 to
2.91 N⋅m torque as shown in the figure
below, when the thickness of the flange of the
OMT or filter is assumed to be 4 to 7 mm. The
enclosed washers as accessory must be

Flange Thickness

Screw

of OMT/Filter

Length4 to 7 mm[0.15” to 0.275”]
7 to 10 mm

inserted to bolts before tightening bolts.

[0.275” to 0.4”]

When the thickness is exceed 7 mm, the

10 to 13 mm

appropriate length screws or bolts based[0.375” to 0.525”]

1/2”
5/8”
3/4”

should be prepared on the table on the right.

＊Above Specifications are subject to change without notice.

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NJT8105 series

The BUC must be adequately weatherproofed to place in outdoor.
Ensure that the waveguide joint is properly sealed with the enclosed o-ring gasket.

8.2.2. Connecting Coaxial Cable
The BUC is connected the modem with a coaxial cable, and requires to supply +12 to +30 V DC power
and a 10 MHz reference signal from the modem.
The connection of coaxial cable should be complied with thefollowing steps:
Step 1:Connect the coaxial cable with the N or
F-typemale

connectors

to

the

coaxialconnecter equipped with the BUC which isshown in the figure on the right below under
0.68 to 1.13 N⋅m tighten torque.
Step 2:Use

self-amalgamating

tape

to

seal

connector and cable entry points from theconnector to the cable sheath.
Do not power on the modem before finishing all of steps of Connecting Coaxial Cable.



The BUC must be adequately weatherproofed to place in outdoor.
Do seal all of cable connection points from the connector to the cable sheath by usage ofself-amalgamating tape.

8.2.3. Connecting Ground Wire for Chassis Ground
The BUC can be had the chassis ground of the other equipment (e.g. modem) in common.
Connecting wire for common chassis ground from the chassis ground of the other equipment
should be complied with the following step:Tools Required: #2 Phillips screwdriver
Step:

Connect the ground wire from earth ground or chassis ground of other equipment to thechassis ground with M4 x 6 mm Philips pan head screw under 1.15 to 1.4 N⋅m tighten
torque.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
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NJT8105 seriesTo reduce the risk of damage or broken by lightning surge, the unit should be grounded byconnecting the ground wire.

8.2.4. Start-up
Start-up will be immediately performed with the following step:
Step:



Power on the modem and supply the DC voltage and 10 MHz reference from modem.

Only input a DC voltage within the range indicated in specifications.
Do operate with the input voltage range between +12 and +30 V DC power.
When applying higher voltage than specifications (+30 V as maximum voltage in DC power
requirement), it will not only cause this unit failure, but it may also result in electric shock and
fire.



The 10 MHz reference signal should be supplied with the range between -5 and +5 dBm withsine-wave for correctly operation.
Do not supply the signal level of more than +13 dBm.



Do not power on the modem before finishing all of steps of Connection and Installation.

＊Above Specifications are subject to change without notice.

Reference No.:DS-T8105

Rev.:

02E

Sheet:
21