GMDSS Tester MRTS-7M

GMDSS Tester MRTS-7M

Description

Marine Radio Test Set MRTS-7M (GMDSS Tester) is designed to carry out the periodical, annual or renewal surveys 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.

The MRTS-7M is the device capable to provide accurate, independent operation test of the following equipment:

  • VHF receiver-transmitters
  • VHF DSC Controllers
  • VHF Watch Receivers
  • MF/HF radiotelephone equipment
  • MF/HF DSC Controllers
  • MF/HF Watch Receivers
  • NAVTEX equipment

The GMDSS Tester MRTS-7M is specified equipment for radio inspectors performing mandatory, periodical surveys of ship-borne communication equipment.

The Marine Radio Test System MRTS-7M allows ensuring the GMDSS equipment meets the appropriate performance requirements.

Specification / Features

MRTS-7M supports testing of the following equipment:

1. VHF receiver-transmitters

  • operation tests on any simplex channel including 6, 13 and 16 channels;
  • measurement of frequency and frequency deviation;
  • measurement of output and reflected power;

2. VHF receiver-transmitters 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
  • check the MMSI code programmed in equipment without any broadcast emission
  • measurement of frequency and frequency deviation
  • measurement of output and reflected power

3. MF/HF radiotelephone equipment

  • operation tests by means transmission/reception of modulated signal
  • measurement of frequency in range (1600 – 30000) kHz
  • measurement of output power

4. 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
  • check the MMSI code programmed in equipment
  • measurement of frequency and frequency deviation
  • measurement of output power

5. NAVTEX equipment

  • operation tests by means of sending one of two available test messages on any of three frequencies: 490 kHz, 518 kHz or 4209.5 kHz

6. VHF equipment of duplex radiotelephony with airplanes including operating on 121.5MHz and 123,1MHz

  • operation tests by transmission/reception of modulated signal
  • frequency and power level measurements

7. VHF radiotelephone stations operating in range (300 - 337) MHz (intended for river-sea vessels)

  • operation tests by transmission/reception of modulated signal
  • frequency and power level measurements.

8. MRTS-7M can be used as RF Signal Generator

  • device allows to generate the RF signals in range of 0,5 – 30 MHz

9. MRTS-7M can be used as RF Signal GeneratorFrequency meter

  • device allows to measure the signal frequency in range 0,5 – 30 MHz and 156 – 163 MHz.

10. The tester is capable to transmit and receive the signal by:

  • broadcast antenna
  • direct connection by means of attenuator and cables

Connection to PC

GMDSS Tester MRTS-7M can be easily connected to any PC or laptop to process measured results and create test reports/shore-based maintanence certificates.

The device can be connected by means of standard USB A -USB B cable. Special software is avaliable for download. FTDI driver should be installed for proper connection on first run.

The minimal requirements are Microsoft OS and a USB port. No extra hardware configuration is required.

Complete set of GMDSS Tester MRTS-7M

Complete set of the tester:

  1. MF/HF/VHF Marine Radio Test System (MRTS – 7M)
  2. Power supply unit
  3. VHF-telescopic antenna
  4. MF/HF-wire antenna
  5. VHF Pow-VSWR meter (50W)
  6. MF/HF Attenuator 250W
  7. USB-A – USB-B cable
  8. NMEA IN/OUT cable (DB9 fem – open wire 1.5m)
  9. User Manual
  10. Calibration Certificate
  11. Package

Technical description

Operational frequencies:

VHF range all simplex channels:  156,000-163,000 MHz 

VHF range CH70:   156,525 MHz

MF/HF Range: 400 - 30 000 kHz

MF range DSC Mode:

  • 2187.5 kHz – Distress frequency;
  • 2177.0 kHz – Traffic frequency;
  • 2189.5 kHz – Traffic frequency.

HF range DSC Mode:

  • 4207.5 kHz
  • 6312.0 kHz
  • 8414.5 kHz
  • 12577.0 kHz
  • 16804.5 kHz

Measurement accuracy:

  • Frequency measurement general: +/- 0.2 ppm +/-1 digit
  • Frequency measurement at CH70: +/- 0.2kHz

Ouput signal:

Stability of output frequencies (GTXO-91V/EN 19.20MHz):

  • Frequency setup accuracy at +25°С: ±1,0 ppm ;
  • Temperature stability of frequency in range of  0 … +45°С:  ±0,5 ppm ;
  • Aging rate: not more ±1,0 ppm/year for first year.

Levels of output signals in DSC mode:

Max. POW level:

  • VHF range: -13 dBm ± 1 dB;
  • MF/HF range:  -13 dBm ± 1 dB.

Min. POW level:

  • VHF range: -99 dBm ± 3 dB;
  • MF/HF range:  -99 dBm ± 3 dB

Levels of output signals in MF/HF and VHF Synthesizer mode.

  • 400 - 30 000 kHz: 13 dBm ± 1,0 dB
  • 156 000 - 163 000 kHz: 13 dBm ± 1,0 dB

Signal attenuation range:  0 - 93  dB 

GMDSS Tester MRTS-7M operation video manual

Downloads for GMDSS Tester MRTS-7M

GMDSS Tester MRTS-7M / GMDSS Tester MRTS-7M Brochure (version: 1; 21.09.2017; 2800 kb)

Main features and specification of GMDSS Tester MRTS-7M

Note: Free access. Can be downloaded without registration.

GMDSS Tester MRTS-7M / Technical Description and User Manual (version: 1 Draft; 21.09.2017; 0.96 Mb)

Complete technical description and operation user manual for GMDSS Tester MRTS-7M is available in PDF format.

Note: Limited access. The registration is required for downloading the item.

GMDSS Tester MRTS-7M / Test report Example (version: Draft; 21.09.2017; 83.09 kb)

Examples of certificate created by GMDSS Tester MRTS-7M Software. The test report is important logical completion of test process.

Note: Free access. Can be downloaded without registration.

GMDSS Tester MRTS-7M / Driver (version: 1; ; )

Drivers to create virtual com port for direct connection of GMDSS Testers MRTS-7M

Note: Free access. Can be downloaded without registration.

News

16.05.2016

Guidance on AIS devices agreed

The Sub-Committee endorsed a draft Safety of Navigation (SN.1) circular providing information to seafarers on the display of AIS-SART, AIS Man Overboard (MOB) and EPIRB-AIS devices, for submission to the MSC for approval.

03.04.2016

GMDSS modernization on agenda

The modernization of the Global Maritime Distress and Safety System (GMDSS), e-navigation implementation and new and amended ships’ routeing proposals are among items on a busy agenda as the third session of IMO’s Sub-Committee on Navigation, Communication, Search and Rescue (NCSR) gets underway (29 February-4 March).