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|  MIL-C-64025
Open
Col 2
A2-E53
Col 3
Open
A2-E54
Col 4
Open
A2-E55
Open
S.c.s.
A2-E38
XMIT
Open
A2-E39
0+0.2V
CLEAR
A2-E42
0+0.2V
VREFL
A2-E58
4.5.7.6 Power off current test. M e a s u r e t h e c u r r e n t i n t o
A2-E45
(RAMV) and verify Compliance with the requirements of 3.9.3.
I
Memory retention voltages Measure the voltage at the
4.5.7.7
cathode of CR2 of the AZ assembly and verify compliance with the
requirements of 3.9.6.
4.5.7.8 Power on clear. Open A2-E42 (CLEAR) then apply 13+0.5
q
volts to A2-E34 (+15V). Verify that the waveform response at A2-E29
(CLR) is in compliance with the requirements of 3.9.8.1.
I
a p plication test.
Verify that the SENDER
4.5.7.9 Initial
power
"INVALID" in compliance with the requirements of 3.9.9. If
dis- lays
p
I
the RCU displays `-'ON", short the cathode of CR2 of the A2 assembly to
A2-E43 (GND) and restart testing at this point.
I
4.5.7.10 STORE code entry Prompt . Open the supply connection to
A2-E34 (+15V). APPlY 0+0.2 volts to A2-E42- (CLEAR). Execute the -
following sequence: Apply 0+0.2 volts to A2-E38 (S.C.S.), Open A2 E42
(CLEAR), apply 13 + 0.5 volts to A2-E34 (+15v), wait at least 1
second, open-- A2-E38 (S.C.S.). Verify that the SENDER displays five
dashes (--- ) in compliance with 3.9.10.1.
4.5.7.11 STORE code select test. Enter keys 1 thru 8
sequentially. Verify the display response with the requirements of
3.9.10.2. Enter keys 1 thru 5 sequentially. Verify that the SENDER
displays "12345".
Open A2-E34 (+15V). APPlY 0+0.2
Keyboard timeout test.
4.5.7.12
Volts to A2-E42 (CLEAR) for at least 1 millisecond then open. Apply
13+0.5 volts to A2-E34 (+15V). Verify that the SENDER displays "ON" in
compliance with the requirements of 3.9.8.1. Measure the time-lapse
from the moment power is applied to A2-E34 (+15V) until the SENDER
displays "INVALID" and verify compliance with the requirements of
3.9.11 .4."
Processor reset test. Apply 0.0+_0.2 volts to A2-E42
4.5.7.13
(CLEAR) for at least 1 millisecond, then open. Verify that the display
reads "ON" in compliance with the requirements. of 3.9.8.2. OPen the
supply-connection to A2-E34 (+15v).
4.5.7.14 Invalid STORE code entry test. Apply 0+0.2 volts to
A2-E42 (CLEAR) for at least 1 millisecond then open. Apply 13+0.5
volts to A2-E34 (+15V). Enter "12344" (an incorrect STORE code) within
the next 15 seconds after application of power to A2-E34 (+15V).
Verify that the SENDER displays "INVALID" in compliance with the
requirements of 3.9.11.4. Open the supply connection to A2-E34 (+15V).
.
.
145
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