Peavey MediaMatrix Nion, Руководство по оборудованию

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Appendix A - Troubleshooting
66 Version 1.6.1.0 September 30, 2010
SNMP – use dependant.
Best practices
ƒ Explicitly set the CobraNet Conductor priority and XDAB master priority in all devices to
insure they are set correctly.
ƒ Locate the CobraNet Conductor outside an XDAB cluster when possible.
ƒ Set all Conductor priorities to 0 in all devices except those that should be allowed to be
Conductors. For those devices that should be Conductors, make their priorities the same.
ƒ
Devices with CM-1 modules are preferred as Conductors over devices that have CM-2
modules.
Low voltage warning
When using phantom power for high current draw condenser mics on NIONs, and when all
four I/O slots are populated with ML II cards, the +/-24V power voltage may drop a little. This
is because on some NIONs, the 24V power supply current limit is slightly low. This voltage
drop is sometimes sufficient to trigger the voltage warning: the
Attn button on the front of the
NION will flash red, and pressing it will bring up the voltage monitoring screen, with the
+/-24V measurements highlighted.
Under most conditions, the voltage drop will not have any effect on the functioning of the
NION, because the full 24V is actually substantially more than the cards require. The 24V
supplies feed local regulators on the cards which generate a substantially lower voltage for the
analogue i/o circuits - this decouples the analogue circuitry from variations in the 24V supply.
The problem can be worked around by using less power hungry microphones or by removing
one of the ML II cards from the unit. If you cannot do this, contact your local NION service
agent.
NION locking up or rebooting spuriously
If you load a role onto a NION and find that the unit has locked up, or keeps rebooting
spuriously, it may not be possible to erase the role via the front panel or the web interface using
the normal methods.
The NION includes a service menu, accessible at boot time, which will allow you to boot the
unit, but not load the role. It can then be erased.
Caution: It is very important that you follow the instructions in this section carefully. Do not
experiment with other options in the service menu. You could make the NION inoperable.
To stop the role from loading automatically at boot time
1. Switch off the NION by pressing the Power button, and then selecting OK .
2. Hold down the two buttons indicated below.