TM 9-4935-481-14-1
Table 3-5. SEQUENCE Switch ALIGN 1-6 Functions
Table 3-6. INTERNAL TEST Switch Functions
Switch
Signal Applied to Tracker Test Set
Position
Function
Position
for Circuit (Parameter) Alignment
1
a)
High frequency peak detector reads output of coarse reference
NOTE
amplifier. R12 on XA2 is adjusted during calibration procedure
for a reading of +9.782 Vdc.
When SEQUENCE switch is in position ALIGN 1
b)
20 Hz ripple on simulated horizontal wire signal is inhibited to
and ALIGN 2 calibration of the TTS may be
permit reading the dc bias (error) voltage during automatic
performed only while the DMS-D PROG PERFORM
tests 1-16.
EVAL ALIGN lamp is illuminated.
c)
+25 Vdc applied to XA19-44 to activate sin/cos delay relay.
2
a)
High frequency peak detector reads reference oscillator output,
whose amplitude is controlled by the ALIGN 1 potentiometer.
1
Horizontal guidance wire
squelch positive
b)
Horizontal wire ripple is stopped at the more positive voltage
Vertical guidance wire
wire clamp positive
peak in AUTO mode and at the more negative peak in MNL mode.
Horizontal rate
dynamic gain
c)
+2.500 Vdc is applied to the low frequency peak detector input
Vertical rate
dynamic gain
for self-check purposes.
Difference signal
filter
2
Horizontal guidance wire
squelch negative
3
a)
High frequency peak detector reads simulated sum signal.
Vertical guidance wire
wire clamp negative
b)
Horizontal wire ripple is stopped at the more negative voltage
Sum signal
filter
peak in AUTO mode and at the more positive peak in MNL mode.
3
Horizontal error (boresight)
positive
c)
75 mvP, low frequency oscillator output applied to low frequency
AGC signal
high level
peak detector input.
Sum signal
high level
4
TTS meter
calibration level
Horizontal error (boresight)
negative
4
a)
High frequency peak detector reads simulated difference signal.
AGC
low level
b)
Ground applied to XA4-38 to simulate TTS boresight inhibit com-
Sum signal
low level
mand (changes scale factor of manual horizontal wire dc level).
5
Horizontal error (missile
high level
c) +25 Vdc applied to XA21-9, 21, 22 to activate tracker select,
command)
0.5 and 5.0 Hz transfer, and 5 Hz control relays.
AGC signal
high level
d) Connects J8-JJ (trainer vertical rate/position out) to J6-76
Difference signal
high level
(tracker horizontal rate input) for checking frequency response
6
Horizontal error (missile
low level
of derate network.
command)
AGC signal
low level
5
a)
Grounds input to high frequency peak detector for offset adjust
Difference signal
low level
by ALIGN 2 potentiometer.
TTS
IR calibration
b)
+25 Vdc applied to XA21-9, 21, 22 to activate tracker select,
0.5 and 5.0 Hz transfer, and 5 Hz control relays.
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