AR 10044778, Operating And Service Manual, Page: 40 / 54

Model 100U1000
22 Rev B
2.4.7 Interlocks
The 4U MPC has one interlock circuit that is wired to the rear panel Safety Interlock connector. This
interlock requires a normally closed external circuit to allow the unit to function.
2.4.7.1 Inhibit Interlock
This interlock circuit inhibits RF amplification by disabling the low level (A1) and Power (A2 & A3)
amplifier stages.
The Inhibit Interlock is wired to the rear panel interlock connector pins 1 and 8. A closed circuit from
interlock connector pin 1 to pin 8 is required for normal operation. Opening the Inhibit Interlock connection
will inhibit the amplifier and display Fault:Interlock on the front panel Touch Display.
When the Inhibit Interlock circuit is restored to a closed condition, the Inhibit Interlock fault can be cleared
by pressing the
RESET
button on the front panel LCD or by using the remote reset command (when the
Toggle Switch is set to REMOTE ).