TB 11-6625-2937-35
Section IV.
CALIBRATION PROCESS
(10) Adjust oscilloscope controls so that
NOTE
waveforms displayed are similar to A, figure 6.
b. Adjustment
The calibration procedures are divided
(1) Press RECYCLE TEST switch, on
into performance checks and adjust-
digital tester, down and release. Observe that
ments. When a performance check is
red RECYCLE TEST indicator lights during test.
not within tolerance and no adjustment
(2) Adjust capacitor C2 (fig. 5) for square
is specified, the deficiency must be cor-
wave with zero displacement +100 msec similar
rected before continuing with the pro-
to waveform A, figure 6.
cedure.
(3) Remove circuit card assembly A4 from
extender card, remove extender card and plug
8. System Loop Lock
A4 into control-interface unit.
a.
Performance Check.
9. Processor Loop Lock
(1) Perform all instructions in paragraph 7.
a. Performance Check.
(2) Install circuit card assembly 2A4 (fig.
(1) Perform all instructions in paragraph 7.
(2) Install circuit card assembly 2A4 (fig.
interface unit.
(3) Connect channel A of oscilloscope between
control-interface unit.
pin 41 and GND of extender card connector.
(3) Connect channel A of oscilloscope between
(4) Connect channel B of oscilloscope be-
pin 41 and GND of extender card connector.
tween pin 86 and GND of extender card connector.
(4) Connect channel B of oscilloscope between
(5) Set the digital tester controls as follows:
pin 14 and GND of extender card connector.
Control
Setting
(5) Set the digital tester controls as follows:
POWER
Up (on)
Control
Setting
UUT POWER
Up (on)
POWER
Up (on)
(6) Insert BITE program card in digital
UUT POWER
Up (on)
tester card reader slot.
(6) Insert BITE program card in digital
(7) Press PROGRAM ENTER switch, on
tester card reader slot.
digital tester, down and release. Observe that red
(7) Press PROGRAM ENTER switch, on
PROGRAM ENTER indicator, on digital tester, goes out
digital tester, down and release. Observe that red
and white READY indicator lights.
PROGRAM ENTER indicator, on digital tester,
(8) Set the control-interface unit controls as
goes out and white READY indicator lights.
follows:
(8) Set the control-interface unit controls as
Control
Setting
follows:
MODE SELECT
MODULE TEST STE
Control
Setting
POWER ON, OFF ON
MODE SELECT
MODULE TEST
(9)
Press RECYCLE TEST switch, on digi-
STE
tal tester, down and release. Observe that red
POWER ON, OFF ON
RECYCLE TEST indicator lights during test.
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