User guide

Installing and Powering Up
To power up the MX8400, perform the following:
1. Switch on the local AC supply (or supplies if dual PSUs are fitted) to apply power
to the equipment. The MX8400 executes a series of power up initialization and
self test routines.
2. Check that all cooling fans are rotating. If they are not, switch off the equipment
immediately.
3. Check the Alarm indicator is on during initialization and extinguishes after a
successful boot which is about 30 seconds.
2.17.3 Power up Self Test
On power up, the MX8400 runs through a boot sequence that includes a series of
self tests that can take between five and ten seconds to complete. During the test,
the red Alarm indicator at the front panel is lit.
If the test result is a PASS, the unit is now ready to receive its configuration from
nCompass Control. This is indicated by the Alarm indicator extinguishing.
If the test result is a FAIL, the MX8400 Multiplexer remains in the self test mode with
the inputs disabled. The Fail relay is set, and the Alarm indicator at the front panel
remains lit.
On successful completion of the self tests, the MX8400 moves on to the start-up
sequence.
2.17.4 Start up Sequence
The MX8400 Multiplexer runs through an initialization sequence after successful
completion of the power up self tests. No configuration parameters are stored after
reboot except for Static Parameters. When the initialization process completes
successfully the MX8400 is ready to receive its configuration from nCompass
Control.
2.17.5 MX8400 Multiplexer Configurations
The MX8400 Multiplexer stores the most recent valid configuration downloaded from
nCompass Control.
2.17.6 Using nCompass Control
Refer to nCompass Control help files which deal with its use with the MX8400
Multiplexer.
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