NSR Marine NGT-200 User manual

USERMANUAL
NSR GMDSS TESTER
NGT-200
Test for MF/HF/VHF DSC & AIS/EPIRB/NAVTEX
NGT-200 UM.E 20210520-02

NGT-200 UM.E 20210520-02
MODIFY RECORD
No.
Modify by
Date
Paragraph
Version
Reason
1
Q/A
2019/12/12
01
First edition
2
Q/A
2021/05/20
all
02
Software upgrade

NGT-200 UM.E 20210520-02
CONTENTS
1 PURPOSE .................................................................................................................... 1
2 GENERAL VIEWS..................................................................................................... 3
2.1 Front view.............................................................................................................. 3
2.2 Top and Bottom views .......................................................................................... 4
3 COMPLETE SET AND ACCESSORIES................................................................. 5
4 MENU TREE............................................................................................................... 6
5 RADIO TESTS............................................................................................................ 8
5.1 TEST VHF. Set of VHF Tests............................................................................ 8
5.2 TEST MF / HF –collection of MF / HF Tests ................................................. 15
5.3 TEST AIS –collection of AIS Stations and AIS-SARTs Tests ....................... 22
5.4 TEST EPIRB –EPIRB Testing Sets................................................................. 41
5.5 TEST NAVTEX –collection of NAVTEX Tests............................................. 46
5.6 TEST NMEA –collection of NMEA Interface Tests....................................... 48
6 TEST RESULTS........................................................................................................ 50
7 SETTINGS................................................................................................................. 54
7.1 SETTINGS > EDIT MMSI.............................................................................. 54
7.2 SETTINGS > SHIP ID ................................................................................... 55
7.3 SETTINGS > Test config ............................................................................... 56
7.4 SETTINGS > LCD contrast............................................................................. 57
7.5 SETTINGS > Setup date/time ........................................................................ 58
7.6 SETTINGS > Clear profiles ........................................................................... 58
7.7 SETTINGS > General info ............................................................................. 58
7.8 SETTINGS > U battery .................................................................................. 59
7.9 SETTINGS > Self test .................................................................................... 59
8 TECHNICAL SPECIFICATIONS.......................................................................... 60
9 RECOMMENDED TESTING PROCEDURES..................................................... 61
9.1 Typical setup of equipment connection for testing........................................... 61
9.2 Table of configurations and modes................................................................... 66
9.3 Step-by-step plan of checking of VHF radio station with DSC........................ 67
9.4 Step-by-step plan of checking the duplex VHF radio station........................... 68
9.5. Measurement of AIS station or AIS-SART parameters ................................... 69
10 TESTER’S CALIBRATION .................................................................................... 73
11 ENVIRONMENTAL AND MAINTENANCE GUIDELINE ............................... 74
12 POWER SUPPLY ..................................................................................................... 75
Appendix 1 UNIT CONVERSION............................................................................. 76
Appendix 2 SIGNALS PLACING ON RS232/RS422 IN/OUT OUTLET......... 77

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1 PURPOSE
NGT-200 NSR GMDSS Tester (Marine Radio Test Set) is intended to carry out the
operation, maintenance and servicing tests of MF/HF/VHF Radios with DSC and
NAVTEX receivers in accordance with IMO A.948 (23) or A.997(25), A.1020(26)
resolutions. Besides, if in extended version (A) Tester also lets to check AIS mobile
stations and AIS-SARTs according to the circular letter MSC.1/Circ.1252 and Cospas-
Sarsat beacons such as EPIRB, PLB, ELT, MOB devices in accordance with
MSC/Circ.1040.
NGT-200 supports testing of the following equipment:
●VHF transceivers:
- operation tests on any simplex channel including 6, 9, 13 and 16 channels;
- measurement of carrier frequency and frequency deviation;
- measurement of antenna feeder SWR, forward and reflected power;
●VHF transceivers with DSC:
- test of correct transmission/reception of DSC messages by means of
transmission/reception of distress or test call to particular MMSI number and
Distress (to all ships) messages;
- check the MMSI code programmed in equipment without any broadcast
emission;
- measurement of frequency and frequency deviation;
- measurement of output and reflected power;
●MF/HF radiotelephone equipment:
- measurement of frequency in range (1600 –30000) kHz;
- measurement of output power;
- functional tests in frequency range (1600 –30000) kHz;
●MF/HF controllers with DSC:
- check the MMSI code programmed in equipment;
- check receipt of DISTRESS signal by MF/HF equipment with DSC by means
of transmit of selective DISTRESS message;
●MF/HF radiotelephone equipment with DSC:
- test of correct transmission/reception of DSC messages by means of
transmission/reception of selective Test call to particular MMSI number and
Distress (to all ships) messages on any of 6 distress channels;
●NAVTEX equipment:
- operation tests by means of sending test message;
●VHF equipment of duplex radiotelephony (portable):

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- operation tests on channels 6, 9, 13, 16 (at least);
- measurement of output power, carrier frequency and frequency deviation;
●VHF equipment of duplex radiotelephony with airplanes including operating on
121.5MHz and 123,1MHz:
- operation tests by transmission/reception of modulated signal;
- measurements of frequency, output power level and frequency modulation
depth;
●VHF radiotelephone stations operating in range (300 - 337) MHz (intended for
river-sea vessels):
- measurement of output power, carrier frequency and frequency deviation;
●AIS mobile stations Class A and Class B and AIS-SARTs working in the Marine-
VHF band:
- measurement of output power, carrier frequency and antenna VSWR;
- receiving and decoding of the AIS messages;
- sending data/messages to AIS stations;
- passing the DSC polling information (channel 70);
- checking AIS response to “virtual vessels”.
●Cospas-Sarsat radio beacons:
- measurement of output power and carrier frequency on channel 406MHz;
- receipt, demodulation and decoding of messages on channel 406MHz;
- measure of output power level and carrier frequency on channel 121.5MHz;
- measure of output power level and carrier frequency on channel 243MHz;
NGT-200 allows to:
- generate the RF signals in range of 0.4 –30 MHz and 118 –275 MHz,
including those with tonal amplitude and frequency modulation;
- measure the signal frequency and power level of narrow-band radio signals in
range of 0.4 –30 MHz, 118 –137.5 MHz and 156 –163 MHz.
The tester is capable to transmit and receive the signals by:
-broadcast antenna
-direct connection to radiofrequency IN/OUT
-through Power sensor SWR meter
-direct connection by means of attenuator and cables (conductive measurements)

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2 GENERAL VIEWS
2.1 Front view
The front view of tester is shown on figure 2.1.
Fig. 2.1 NGT-200 front view

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2.2 Top and Bottom views
Fig. 2.2 NGT-200 top and bottom views
1 –green led: indication of external voltage supply;
2 –red led: indication of accumulator charging; after the accumulator is charged,
the led will fade;
3 –LCD;
4 –keyboard;
5 –USB-B socket for connection to PC and battery charging;
6 –audio output for connection 3,5 mm jack; Impedance > 8 Ω; right and left
channels are shorted;
7 –DB-9 socket for connection to RS232 / RS422 / RS485 interfaces;
8 –ON/OFF rocker switch;
9 –RF IN/OUT TNC connector;
10 –AUX: universal socket for VHF Power sensor VSWR meter connection.

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3 COMPLETE SET AND ACCESSORIES
The complete set of tester includes the items in accordance with table:
No
Item name
Qty
Notes
1
GMDSS Tester.
Marine Radio Test Set model NGT-200 main unit
1
2
Power adaptor
1
3
Telescopic antenna
1
4
NMEA cable IN/OUT (DB9 open wire)
1
5
USB-A –USB-B cable
1
6
VHF Power sensor VSWR meter (VHFPS1)
1
7
RF cable UHF male-UHF male RG58 1m
1
8
RF cable UHF female-UHF male RG58 0.5m
1
9
MF/HF Attenuator 40dB, 200W
1
Optional
10
Crushproof and watertight plastic box
1
11
Calibration Certificate
1
12
User Manual
1
VHF Power sensor VSWR meter (60W) - designed for conducted measurements
of the power and SWR in VHF frequency ranges; frequency range: 30 –410 MHz;
inserted attenuation between RF-In and NGT-200-Output: 63 dB.
* conducted measurements –measurements done by direct connection of equipment, e.g. by
means of RF-cable.
MF/HF Attenuator 40dB, 200W (optional) - used for conducted measurements
of the power in MF/HF frequency ranges.
NMEA IN/OUT cable - enables checking the Pilot plug performance capability
and checking of vessel’s transducers: GNSS, gyrocompass, log, etc.
Fig. 3.1 What inside the box

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4 MENU TREE
Fig. 4.1 NGT-200 main menu
The tester has user-friendly interface.
The tester operation is managed through MENU and 20 independent navigation
keys: numeric keys from 0 to 9 , menu navigation buttons ▲,▼, ◄, ►, Enter,
Esc , + , –, F1 and F2.
You can toggle between the menu lines using ▲and ▼keys.
Confirm/select something by means of Enter and Esc keys, cancel or move up
menu level by means of Esc key.
After the tester is turned ON it displays the device’s model, its serial number, date,
time and manufacturer logo.
Press Enter key to enter the main menu.
The main menu allows to select one of the operating modes, please see menu tree
on figure 4.1.
Each menu item has its own subsections. User moves among the subsections using
the same buttons as for the moving in main menu.
Use the Esc key to go back to main menu.

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Fig. 4.2Menu tree