TM 9-4935-481-14-1
Table 3-6. INTERNAL TEST Switch Functions - Continued
Table 3-6. INTERNAL TEST Switch Functions - Continued
Position
Function
Position
Function
c)
Connects J8-JJ (trainer vertical rate/position out) to J6-77
11
a)
Trainer clock buffers enabled to allow time sequencing during
(tracker vertical rate input) for checking frequency response of
calibration and self test.
derate network.
6
a)
Grounds XA23-117 to set trigger safe logic, simulating a TTS
current input.
b)
+25 Vdc applied to XA22-11 to activate + continuous/1 KHz square
wave relay.
7
a)
Load of 15 K//.05 applied to vertical wire output to simu-
f
late TTS input impedance.
b)
Ground applied to buffered clock inhibit line (XA14-62) to stop
20 Hz counter on XA19 during calibration procedure.
c)
+25 Vdc applied to XA22-24 to activate detector B continuous
relay.
8
a)
-13 Vdc applied through 50a resistor to trigger safe current
self test of trainer positive limit comparators.
b)
+25 Vdc applied to XA22-11, 16 to activate detector B - contin-
uous/1 KHz square wave relays.
c)
Selects internal clock for use during trainer self test.
9
a)
+5 Vdc applied to XA18-118 to activate relay associated with
input (XA23-15) to check scaling amps and cal levels.
b)
+25 Vdc applied to XA22-24, 28 to activate detector B continuous
and - continuous relays.
10
a)
+5 Vdc applied to XA18-117, 118 to activate relays associated
with self test of trainer negative limit comparators.
b)
Selects internal clock for use during trainer self test.
c)
Applies +5 Vdc to XA24-32 to activate relay that selects the
output of the derate filters.
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