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Channeling Tests
Primarily refer to NARCO NK2D manual page 2-10 para 2.4.2.2.
Connect P102 C (black wire) to N (yellow) to energize channeling.

Connect one end of a 1.0K resistor (14v) or 1.8K resistor (28v) to red wire (P102-5).
The unconnected end of the resistor is touched to the terminal to be tested.
Connect a DC voltmeter between P102 C & N and the free end of the resistor to measure.

To check ARINC level NAV signal, connect AC volt meter between P102 terminals C and 1.  Do not connect pull-up resistor to these terminals.

An audio watt meter can be used to check the 50mW audio at P102 Pin 12 using P102 C as reference.  This 50mW audio is connected by the cable back into the AUX audio input.

  Avionics Test Equipment Panels and Cables for bench testing of Aircraft Radio, Navigation, Audio Controllers, Radar and more. Linaire Engineering Inc.
Last modified: June 15, 2004