406MHz ELT TESTER is designed to check the avionics emergency locator transmitters (ELT) operating via COSPAS-SARSAT system. Tests can be carried out in volume of annual test requirements or in volume of maintenance requirements or for fast check after ELT’s encoding or installation.

 

Tester can receive the messages from any 406 MHz COSPAS-SARSAT beacon transmitting either in test mode or in real alert emergency mode. The signal can be received through the broadcast by means of antenna or the tester can be connected directly by means of cable through a suitable attenuator. Radiated tests in real alert emergency mode should be carried out using screened room (or enclosure) only.

 

This tester can be used for testing of personal locator beacons (ELTs).

 

 

Tester provides carrier measurement on a frequency of 406 MHz with accuracy to -/+ 500 Hz.

ATTENTION!!!
The operation range of the tester is extended to 406020…406040 kHz and divided on 7 sub ranges (see item 5.4.1.1). The default range is 406028 kHz when the tester is turned on. The chosen channel should correspond to operation frequency of tested beacon.

The tester provides audio-control of the sweep signal presence on a frequency of 121500-/+10 kHz and 243000-/+10 kHz .

The tester provides demodulation and decoding of the emergency information and displays on your choice the НЕХ-code (15 Hex ID or the message 1-112 bit) as well as all decoded information in text view with all measured parameters. Besides, the BCH code is calculated and compared with received one, and the result is displayed.

The tester provides measurement of positive/negative phase deviation value with accuracy to -/+ 2,8 о.

The tester provides measurement of total transmission time of the message with accuracy to  -/+ 0,2% and time of preamble duration with accuracy to  -/+ 0,2 %.

The tester provides measurement of received signal level on a frequency of 406 MHz within the range 19 – 43 dBm or 0,08W - 20W with accuracy to
● -/+3,0 dB by means of antenna;
● -/+0,5 dB by means of attenuator.

The tester provides measurement of received signal level on a frequencies of 121,5 MHz and 243 MHz within the range 13 – 20 dBm или 20-100 m W with accuracy to
● -/+3,0 dB by means of antenna;
● -/+0,5 dB by means of attenuator.
 
The tester allows to perform the measurement of beacon parameters by means of standard external antenna (from 3 to 15 meters), as well as via high-frequency cable and attenuator connection. Calibration test of the power meter is performed for 5 meter distance.

Tester HF-input resistance is about 50 -/+ 1,5 Ohm.

Tester allows to save up to 10 measuring results in non-volatile memory (overall measurements in MEASURE/TEST CH406 MHz mode).


Single measurement circle time is not more than 2 min.

The tester can be power supplied by 4 AA batteries 1,5 V, as well as by external direct current source with approximate voltage 4,5…7 V and load current no less than 300mA connected to USB input of the tester by means of standard USB connector (of PC USB connector or network USB adaptor).


Tester’s current consumption:
-    in standby mode with no LCD highlighting  - no more than 130 mА;
-    in standby mode with LCD highlighting  - no more than 200 mА;
-    in measure mode with LCD highlighting  - no more than 300 mА.

Approximate continuous operation time of the tester from the internal power supply elements is about 6 hours.

Tester will be switched off automatically in 15 min. after the latest keystroke.

Tester generates the voltage of the internal power supply elements with accuracy  5%.

1    ELT Tester 406 03   
2    Antenna   
3    PC cable (USB A – USB A 1.5m)   
4    Technical description and operation manual   
5    HF - attenuator   
    HF cable TNC/TNC 0.5 m RG58   
    HF cable BNC/TNC 1 m RG58   
6    Device packing   
7    Software  and software user’s manual - optional*
8    Power adapter (USB adapter) optional
* Software can be easilly downloaded at our website