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BACK
INTRODUCTION
1.10 INTRODUCTION
The LinAire Model LT 6 Test Panel is designed to provide bench test facilities for control and instrumentation simulation of Communication and Communication/Navigation units with VOR or GPS navigation outputs. The LT 6 allows for the use of a Comm units serial control head or the connection of customer supplied serial control buss simulator. The Panel can be used to test the Navigation part of the unit under test with or without a navigation indicator connected to the Panel. Each new harness for the LT 6 Test Panel is delivered with documentation showing signal test points and notes to aid testing.
The panel operates Communication Transceivers including those with built in navigation receivers.
The panel provides the connection for Navigation Indicators used with the receivers for system testing. Most of these indicators can be tested on the LT 6 panel without a receiver connected to the panel.
The panel provides connection of both serial and parallel controllers. Backward compatibility with the LT 5 allows the use of the LTC control heads and main harnesses. Serial data is patched through the LT 6 to the unit under test from a serial control head or other serial data sources.
METERING
Metering is provided by a panel mounted digital meter. The meter switch selects the following inputs:
DC Volts DC Amps
AC Volts (26)
RMS (speaker channel) RMS (Com channel)
RMS (aux audio)
NAV FLAG (0 to 5 - 1K meter loads) NAV DEVIATION (0 to 5 - 1K meter loads)
GLIDE SLOPE FLAG (0 to 5 - 1K meter loads) GLIDE SLOPE DEVIATION (0 to 5 - 1K meter loads)
TO-FROM FLAG (200 ohm meter load)
TEST POINTS & SWITCHES
The panel has 56 Breakout Jacks for access to a variety of signals and functions.
COMMUNICATION section provides the following common test points and switches.
Metering of the supply voltage and current draw
Microphone input (with mike test function for testing pilot’s mike)
Key Switch & Lamp
Panel speaker (monitors speaker or phone/interphone channels)
Squelch control and Disable
Tuning Lamp Indicator
Serial or Parallel controller selection
Headphone Output Jack (monitors phone/interphone & aux audio channels)
Test Point Jacks for - Audio (mike audio Comm input), Audio (mike intercom audio
input), Audio (Comm audio out), Audio (sidetone / aux audio out), Audio (speaker
audio).
NAVIGATION section provides the following common test point and switches.
Metering of Deviation and Flag outputs
Loading for the Deviation and Flag outputs
Test Point Jacks for Deviation and Flag outputs
ILS energize switch
BNC connection for Composite out
Test Point Jacks for OBS signals (provision for connection of precision track selector)
PANEL ACCESSORIES
Frequency Control Head for parallel tuning. LTC 6 provides tuning from 116.00MHz to 151.975MHz(2of5) and 118.00 MHz to 135.95MHz (King BCD).
Cables to patch in the King and Collins serial control units through the panel to the unit under test.
Cables (LVI harnesses) to connect Nav Indicators to panel for system testing of units with Nav Receivers.
PANEL FACE
The decorator colors and improved layout enhance shop appearance. Panel color is Precision Tan and has Dark Brown lettering with brown and gold knobs. The panel is suitable for rack mounting or stand alone and measures 7”H X 19”W X 5.25”D.
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