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Page Title: Table I. Power Supply Circuit Card Assemly Connector Contacts
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MIL-C-70942 (AR)
3.3.3 Power line Protection.  The CCA shall include
protection against overvoltages that exceed the range specified
in 3.3.1 and reverse voltage input power conditions.
3.3.4 Power line monitor.  The input power signal shall be
provided for power monitoring (the monitoring circuit is not part
of the CCA) .  The input power voltage (see 3.3.1) is filtered and
returned on pin 31.
Input Power
Output voltaqe
18.0 + .1 Volts
16.7 +/- 0.5 Volts
24.0 + .1 Volts
22.4 +/- 0.5 Volts
30.0 - .1 volts
28.5 +/- 0.5 Volts
3.3.5 Power indicator
lamp.  The CCA shall supply voltage to
indicator lamps when power is applied to the CCA.  The input
power voltage (see 3.3.1) is filtered and returned on pin 10.
3.3.6 Relay Power.  The CCA shall supply voltage to the M90
relays when power is applied to the CCA.  The input power voltage
(See 3.3.1) is filtered and returned on pins 12 and 13.
3.3.7 Select resistor.  Output line on pin 8 of selected
resistor to permit choosing an appropriate resistor when
determining the +12V output voltage (See 3.3.2).
3 . 3 . 8 S h o r t circuit protection.
The low voltage outputs:
+5V, -5V, +12V and -12V shall be short circuit protected.
3.3.9 Electrical inPut/outPut interface.  Electrical design
of the power supply shall be in accordance with the pin
assignment, as shown in TABLE I.
TABLE 1.
POWER SUPPLY CIRCUIT CARD ASSEMBLY
CONNECTOR CONTACTS
Pin
Connector
Siqnal Name
P4
1
POWER GROUND
P4
+ 5V
2
P4
INPUT POWER
3
P4
4
POWER GROUND
P4
POWER GROUND
5
P4
POWER GROUND
6
P4
7
POWER GROUND
P4
8
SELECT RESISTOR
P4
POWER GROUND
9
P4
10
LAMP POWER
P4
11
POWER GROUND
P4
12
RELAY POWER
4

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