Isolation of Trouble

TM 11-6625-2398-14-4

for the hybrid attenuator provides

a

step-by-step

6-6. Isolation of Trouble

procedure for troubleshooting. This procedure is based

a Calibration of the hybrid attenuator assembly every 90

on the VSWR and insertion loss measurements.

days will hold faulty operation to a minimum since the

c. General support troubleshooting procedure,

periodic check will establish its operational capability.

Hybrid Attenuator lAlAl.

b. In the event the hybrid attenuator assembly fails

to perform properly, the cause of the malfunction must

be determined and remedied. The troubleshooting table

d. Testing of cables of the test facilities set consists

using the applicable cable schematic diagram (fig. 6-2

through 6-10). The schematic diagram for extender card

of continuity checks for cables and connectors, and

lA1A4 is shown in figure 6-11. The schematic diagram

insulation resistance checks for cables. When a cable or

for shorting plug 1A1A2AT6 is shown in figure 6-12.

connector of the test facilities set is suspected as being

faulty, perform standard continuity checks for cables

6-4