GMDSS MULTI TESTER MRTS-7M

Specifications

GMDSS Multi Tester MRTS-7M is a specified equipment for radio inspectors performing mandatory, periodical surveys of ship-borne communication equipment. The tester allows ensuring the GMDSS equipment meets the appropriate performance requirements.
The Marine Radio Test Set MRTS-7M is capable to transmit and receive the signal by:

• Broadcast antenna
• Direct connection by means of power sensor meter, attenuator, and cables (conductive measurements)

All the test procedures are provided in accordance with international standards, such as:

• IMO A.948 (23) or A.997(25), A.1020(26) resolutions (for marine radio stations)
• The circular letter MSC.1/Circ.1252 (for AIS stations)
• IMO Circulars MSC.1/Circ.1039/Rev.1, 1040/Rev.2 (for C/S beacons)
• IMO Resolution A.802(19), SOLAS-74/88 (for SART)

Dimensions

Marine Radio Test Set MRTS-7M (GMDSS Multi Tester) is designed to carry out the mandatory periodical or annual surveys of all range of GMDSS equipment: AIS Stations, EPIRBs, MF/HF/VHF Radios with DSC and NAVTEX receivers being lightweight hand-held device with big LCD and 20 keys for convenient operating.

Dimension Diagram

Vhf Receiver-transmitter

• Operation tests on any simplex channel including 6, 9, 13, and 16 channels
• Measurement of frequency and frequency deviation
• Measurement of antenna feeder SWR and reflected power

Vhf Receiver-transmitter with DSC

• Test of correct transmission/reception of DSC messages by means of transmission/reception of selective Test call to a 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

Vhf Equipment of Duplex Radiotelephony (portable)

• Operation tests on channels 6, 9, 13, 16 (at least)
• Measurement of output power, carrier frequency, and frequency deviation

Vhf Radiotelephony Stations Operating in Range 300-337

• Measurement of output power
• Measurement of carrier frequency
• Measurement of frequency deviation

MF/HF Radiotelephony Equipment

• Measurement of frequency in the range 1600 – 30000 kHz
• Operation tests in the frequency range 1600 – 30000 kHz
• Measurement of output power

MF/HF DSC Controllers

• Check the MMSI code programmed in equipment
• Check receipt of DISTRESS signal by MF/HF equipment with DSC by means of transmitting a selective DISTRESS message

MF/HF Radiotelephony Equipment with DSC

• Test of correct transmission/reception of DSC messages by means of transmitting/receiving selective Test calls to a particular MMSI number and Distress (to all ships) messages on any of the 6 distress channels

AIS Class A, AIS Class B, A to N, AIS Base Station

• Measure AIS frequencies (on channels 1, 2)
• Measure or estimate the AIS transmitted power (on channels 1, 2)
• Receive and decode the AIS messages
• Send the data to AIS stations
• Pass the DSC polling information (channel 70)
• Check AIS answer to the so-called “virtual vessel”
• Simulate NMEA data transmissions
• Simulate AIS data transmissions, such as ship’s name, position, length, course, speed, power, and beam
• Transmit and receive the DSC messages of different types for VHF stations
• Receive the data from the pilot plug or external sensors

AIS-Starts

• Measure AIS-SART frequencies
• Measure or estimate the AIS-SART transmitted power
• Receive and decode the AIS-SART message

406MHz EPIRB, PLB, EPIRB-AIS

• Measure power on 406MHz channel
• Measure frequency on 406MHz channel
• Measurement of total transmission time of 406MHz signal
• Measurement of unmodulated carrier duration of 406MHz signal
• Estimation of the positive/negative phase deviation of the modulated signal
• All 406MHz COSPAS-SARSAT protocols will be decoded
• Reception of the signal within the range of 406.020…406.040MHz frequencies
• Measure power on AIS homing channel
• Measure frequency on AIS homing channel
• Demodulation of AIS messages
• Measure frequency and power level on 121.5 MHz
• Easy and quick audio-control of the sweep signal presence on 121.5MHz frequency

9GHz Radar Start

• Fast check to ensure 9GHz Radar SART will operate in an emergency
• Fast passed/not passed test
• Audio-control of the sweep signal presence
• Signal level measurement
• Measurement of the signal in frequency range of 9140…9560 MHz
• Number of sweeps in view of graph
• Respond signal duration

NEVITEX 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

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

MRTS-7M can be used as RF Signal Generator

• Device allows generating RF signals in the range of 0.5 – 30 MHz

MRTS-7M can be used as Frequency Meter

• Device allows measuring the signal frequency in the range of 0.4 – 30 MHz, 118 – 137.5 MHz, and 156 – 163 MHz

The tester is capable to transmit and receive the signal by

• Broadcast antenna
• Direct connection by means of power sensor meter, attenuator, and cables (conductive measurements)