13
I.
I.
I.
I.
I. System Check-out
System Check-out
System Check-out
System Check-out
System Check-out
1. Turn the aircraft power on and place the Control Switch in the "BURST" position. The Record
Light should come on an stay on. If it does not, check the power and ground connections, Record
Light connections and the Control Switch connections. Also perform the following:
a) To test the Record Light, remove the Record Lights white/yellow wire from the MUX-8A and
short this wire to ground. The Record Light should come on.
b) With the Control Switch in the "BURST" position the MUX-8A yellow wire should be grounded.
Measure this wire with a volt meter.
2. Place the Control Switch from the "BURST" to the "ON" position. The Record Light should go out
in 10 seconds or less (this time depends on the total Transmit Rate for all the instruments connected
to the MUX-8A). If the Record Light is staying on for approximately 30 seconds (the time-out
period), verify that the proper channels are enabled. Also, check the RS-232 connections between
the MUX-8A and the E.I. Instruments. Troubleshoot by enabling only one channel at a time.
3. Place the Control Switch in the "ON" position. Every 1,3, or 6 minutes (depending on the Storage
Time Interval) the Record Light should come on for 5 to 10 seconds. Note: If you connected the
Event Warning Line to one or more E.I. Instrument External Warning Control Lines and one of
these instruments is lighting a warning light, the Record Light will come on every minute regardless
of the Storage Time Interval setting. Check for proper operation with the E.I. Instrument warning
lights on and off.
