LUN 1792 - Analog signal converter ASC

The LUN1792 unit converts analog signals of vertical deviation, lateral deviation and signals of vertical and lateral deviation validity from main output of GNS 430W unit to format suitable for Russian navigation indicator NPP 1485MK or similar.

OBS function
OBS is selected on GNS 430 unit only. For detailed OBS function description see „Pilot’s Guide & Reference“.To use OBS selection on NPP, you need to use LUN1794.3

Electrical parameters
Unit is powered by 28 V DC. Supply voltage should be within the range min. 16 V DC, max. 32 V DC. Recommended value of protection device (fuse or circuit breaker) is 2 Amps. Device is designed to be supplied from aircaft electrical system in accordance with MIL-STD-704E. Unit is powered and all signals are connected via connector series MIL-C-38999, type MS27508E14, 37 pins.

Technical specification

General parameters
Power supply 14...32 V DC
Analog Inputs 4× diferential input, ±150 mV, 12bit
Analog Outputs 2× diferential output, ±250 mV, 12bit
Logic Outputs 3× relay output
Input impedance 1kOhm ±1 %
Output impedance max. 330 Ohm ±2 %
Signal conversion error max ±1 %
Operating temperature -40 - 70 °C
Storage temperature -55 - 85 °C
Humidity max. 95 %
Connector MIL-37
Dimensions 211 × 45 × 90 mm
Weight 500 g
Power consumption 5,0 W


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