SQTR-5

The SQTR-5 Ramp Test Set provides portable testing capability of Universal Access Transceiver (UAT) ADS-B Squitters.

 

1.1 Manual Description


The SQTR-5 Ramp Test Set provides portable testing capability of Universal Access Transceiver (UAT) ADS-B Squitters. The purpose of this manual is to provide instructions for use of the SQTR-5. The SQTR-5 is housed in a rugged case and is supplied with a tablet computer (stored in case lid) for control of the SQTR-5 via a Wi-Fi connection. The SQTR-5 is supplied with an RF antenna for over-the-air testing of the UAT transceiver that is mounted on the case lid and connected to SUM antenna connection. The SQTR-5 antenna connection is designed to be used with a variety of optional antennas which may be connected to the SQTR-5 using the SUM and DIFF (Difference) connections. A GPS connection is for future application that may require a GPS antenna. A Wi-Fi wireless antenna is supplied with the SQTR-5 and should be connected to the front-panel WIRELESS connection. Front-panel BNC connectors allow connection of an oscilloscope for monitoring of various signals: RECEIVER (FSK allows viewing of demodulated signal coming from UAT and VIDEO allows viewing of UAT data pulse or Mode S reply), UAT TRANSMITTER (Scope sync provides pulse relative to the first pulse of the UAT signal being transmitted by the SQTR-5 and the VIDEO allows viewing of the SQTR-5 transmitted pulse), and MODE S TRANSMITTER (Scope sync provides pulse relative to the first pulse of the Mode S interrogation and the VIDEO allows viewing of the Mode S data pulse).

 

1.2 SQTR-5 Function

The SQTR-3BB provides capability for generating the following test functions:
   -Transmits Mode S 1030 interrogation (UF4 format) to get altitude information contained in the transponder Mode S 1090 reply (DF4)
   -Transmits UAT 978 MHz ADS-B squitter for simulation of a single, UAT target that is used to test the UAT receiver and aircraft UAT display system
   -Receives UAT ADS-B squitter from the aircraft being tested, decodes the signal, and displays data being received from the UAT transmitter


The SQTR-5 Test Set is controlled via a tablet computer supplied with the test set that communicates via a wireless (Wi-Fi) connection or through a wired network via an Ethernet cable. Selection between wireless or wired connection is done automatically depending on whether the user uses an Ethernet cable or not.


The SQTR-5 and tablet are battery powered and should operate about 2 hours on a fully charged battery. Power cables are provided for charging batteries.

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