TM 9-4935-481-14-1
C2
Table 3-2. Monitor SELECTOR Switch Functions-Continued
Table 3-3. Trainer MODE Switch Functions
SELECTORS A, B, C
MONITORS
DESCRIPTION/REMARKS
Position
Function
H-17
XA24-17
Buffered/Filtered Vert. Derate
Self test
Checks +6% and -6% switching point accuracy of positive and
18
XA24-24
Buffered/Filtered Horiz. Derate
negative limit comparators, plus operation of GO/NO GO logic.
19
Spare
20
Spare
L/R Mvg
Left and right moving function curves are automatically
21
Spare
evaluated, resulting in a GO or NO GO status indication.
22
XA19-11
4.237 VP Sine
23
XA19-13
4.237 VP Cos.
L/R Sta
As above, but checks stationary curves.
24
XA21-46
Hi-Freq. Oscillator
Up/Dn
Up and down curves are evaluated for a GO or NO GO status.
I-1 thru 22
Spare
23
--
Special Use
Divide #1
Horizontal divide network automatically evaluated with an
24
--
Special Use
input of -2.500 Vdc.
Divide #2
As above, but vertical channel is tested.
+2.5
Divide network fixed gain in (R) 1-3 or end point gain in (R)
4-10 is checked with horizontal and vertical inputs of -2.500
Vdc and +2.500 Vdc, respectively. Outputs of divide network
are evaluated by the operator using DMM.
-2.5
As above, but polarities of input voltage are reversed.
Freq
Low frequency sine wave applied to horizontal and vertical
channels to test response of derate and filter networks.
Up error
Checks switching point accuracy of trainer up error compara-
tor. DMS generates visible tolerance band (GO lamp on) during
which time the trainer comparator should switch, as signified
by the NO GO lamp. DMS ERROR AMPTD potentiometer is used for
variable dc stimuli to the trainer error comparators.
Dn error
As in UP ERROR, but down comparators are checked.
L/R error
As in UP ERROR, but left and right comparators are checked..
3-40
