TR-220 Test Set: Avionics Test & Measurement

This page details the TR-220 test set, highlighting its features. This test set functions as an ATC DME Test Set and is manufactured by Tel-Instruments Electronics Corp.

The TR-220 is a multi-functional test set used for testing various avionics systems, including:

• TCAS (Traffic and Control Avoidance Systems)
• DME (Distance Measurement Equipment)
• ADS-B transmit/receive (compliant with DO-260A/B requirements)
• Transponder modes A and C

Key Features of the TR-220 Test Set

Here’s a rundown of the TR-220’s standout features:

• Performs all transponder tests in modes A, S, and C.
• Enables TCAS I and TCAS II intruder tests and validation.
• Provides DME validation and offers user-customizable solutions.
• Supports testing of all DME channels, ranging from 108 to 117.95 MHz.
• Includes a handheld directional antenna with a coverage range of approximately 10-170 feet.
• Offers RS232 connectivity for PC connection.

TR-220 for DME Testing

The TR-220 is valuable for DME testing, allowing users to configure parameters such as channel (108 to 117.95 MHz) and velocity (120 to 1200 KTS). The instrument measures and displays key DME parameters like PRF, power, and frequency. It also has the ability to transmit Morse code I.D.

DME Specifications Supported

The following table summarizes the DME specifications supported by the TR-220 test set: