Harris ACS-163, Руководство по установке и эксплуатации

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2 – Functional Description ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 2-19
Intraplex Products
Table 2-8. Power Supply Indicator Lights (When On)
Light Description
POWER
(green) The multiplexer has power. Remains on if one of two installed power supplies has failed and the
remaining supply has sufficient capacity to power the multiplexer.
NORMAL
(green) No alert or alarm condition exists.
ALERT
(yellow) When the ACO switch is on, indicates there is an alert at one or more channel modules. These CM-5RB
lights can assist in determining the alert condition:
RX IN is not on - loss of receive signal
RX IN is blinking - receiving a yellow alarm
LPBK is on - internal loopback active
LOOP, INT, EXT is blinking - the fallback timing is activated, and the primary timing mode that is used
will be blinking
SUPPLY FAIL is on - (only when two power supplies are installed) Indicates a power supply failure.
When the ACO switch is on, there is an alert at one or more channel modules.
ALARM
(red) When the ACO switch is on, indicates there is an alert at one or more channel modules. This light turns
on briefly at power-up. These CM-5RB lights can assist in determining the alert condition:
CPU is on - The central processor unit failed.
RX IN and FRM are on - The signal is present but is out of frame.
TX OUT is on - There is no transmit output.
SUPPLY
FAIL
(red) Power supply failure (the shelf is running on the supply whose SUPPLY FAIL light is not on).
As Table 2-8 indicates, when a shelf is equipped with two power supplies, the failure of one supply
creates an ALERT condition. The power supply also contains the ACO (Alarm Cut-Off) switch. The ACO
switch disables the Alert and Alarm relays and is used to silence a local alarm. If two power supplies
are installed (only possible in a 3RU shelf), both ACO switches must be turned on to silence an alarm.
Turning on the ACO switch is one of the conditions that cause the Alert light to turn on. It has no
effect on the Alarm light.
Power supply test points (E9, E10, E11, and E12) allow testing for proper voltages. Section 6.6.4 –
Power Supply Test gives the procedure for using these test points. Figure 2-12 contains a simplified
functional diagram of the power supply.