TM 11-5895-1090-34/TO 31 R2-2TSC-152
Table 4-9. Transient Suppressor Assembly (SM-D-935507)A4 Performance Test Procedure
Step
Operation
Normal indication
If Indication abnormal
1
Refer to paragraph 4-9 for initial procedures and
set up.
34.8 K Ω.+ 10%
2
With the digital multimeter set to measure res-
Replace R1.
istance, measure the resistance between the two test
points labeled R1 on the test fixture.
9090 Ω +o10%
3
Using the digital multimeter, measure the res-
Replace R2.
istance between the two test points labeled R2 on the
test fixture.
4
While observing the digital multimeter, measure the
Replace R3.
Continuously variable from 0
to 50 KΩ + 10%
resistance between test points R3-1-2 and R3-3 on
the test fixture while adjusting R3 on the UUT
through its entire range.
5
Set the digital multimeter to measure dc voltage
and connect between the test points +30 and GND
on the test fixture.
6
Verify that the power supply is off and turn the
VOLTAGE adjust control fully counterclockwise
Connect the power supply to the test fixture as
shown in figure 4-9.
7
Turn the powersupply switch to ON. Turn the
VOLTAGE adjust control clockwise until +30
+0.5V is indicated on the digital multimeter.
8
Set the RELAY SEL switch to the 2 position
Replace CR2.
+29.5 0.6V
and readjust the power supply, if necessary. Connect
the digital multimeter between test points COAX
SW and J 1-8 on the test fixture.
9
Set the RELAY SEL switch to the 1 position
Check CR1, R4, and R5.
-0.7 +0.2V
and connect the leads between JI-9 (+ lead) and J1 8
(- lead) and observe the indication
10
Connect the digital multimeter leads between
Replace CR2.
-0.7 0.2V
COAX SW (+ lead) and J 1 8 (- lead) and observe the
indication.
11
Set the digital multimeter to measure resistance and
connect between K1 2 and K1 3 test points on the
test fixture.
0 +0.2 Ω
12
Set the RELAY SEL switch to position 1 and
Check K1 and C1.
observe the indication on the digital multimeter
13
Set the RELAY SEL switch to OFF and observe
Replace K1.
Infinite ohms
multimeter display for a flashing display of 1999
when set on highest scale. This indicates infinite
ohms.
14
Set the RELAY SEL switch to position 2 and
Replace CR2.
Infinite ohms
observe the indications on the multimeter.
4-15
