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TM 55-4920-412-13&P
Table 3-1. Operator's Guide (Cont)
Control, indicator or connector
Function
UNIT TESTER (Cont)
SIGNAL DATA CONVERTER section (cont)
NT indicator lamp
Verify presence of integral lighting voltages
LIGHT indicator lamp
which are routed to display units through SDC
PROCESSOR SELECTION
Manual selection of A or B processors
Switch A B
PROCESSOR SELECTION
indicator lamps
ANALOG A
When lit, indicates analog processor A is energized
ANALOG B
When lit, indicates analog processor B is energized
DIGITAL A
When lit, indicates Digital processor A is energized
DIGITAL B
When lit, indicates Digital processor B is energized
CONVERSION switch
A(1) switch position to test UH-60A SDC
L(2) switch position to test UH-60L SDC
MONITORS indicator lamps
SHIFT REG
CDU and PDU shift register operation. Also indicates UH-60A
SDC and UH-60L SDC test selection
MUX ANALOG
Normal operation
DIGITAL O/P
Normal operation
MUX DIGITAL
Normal operation
CLOCK INHIBIT DIG OFF
Disables/enables Digital and analog clocks
ANA switch
FAIL WARN indicator lamp
Indicates SDC failure
P/S CONTROL
Provides variable de voltage (0-5 volts) for lamp supply output
WARN OUTPUTS pushbutton switch
Warning output signal wiring continuity
FAILURES switches
PROC A OFF B
Capability of stopping either A or B analog processor
TEST FREQ ON OFF
Test frequency signal wiring continuity
INTER CAL SELECT switch
Interface Calibration selector switch
1
% RPM engine No. I1
2
% RPM engine No. 2
3
Rotor RPM
4
% TRQ No. 1 engine (analog)
5
% TRQ No. 2 engine (analog)
6
Engine oil temperature
7
Engine oil pressure
8
Turbine gas temperature (analog)
9
Gas generator speed (analog)
10
% TRQ No. 1 engine (Digital)
11
% TRQ No. 2 engine (Digital)
12
Turbine gas temperature (Digital)
3-10 Change 2
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