User's Manual

User’s Manual for
ION-M4/8 19"
Page 18 M0132AVA_FCC.doc
3.2.2. Alarm Board
The remote unit alarm board provides 4 alarm inputs for supervision of external
devices, 4 configurable alarm outputs for simple alarm forwarding and 7 alarm LEDs
(for the RU) or 4 alarm LEDs (for the EU). The Status alarm LEDs are green in
normal operation, red when there is an alarm concerning the RU and yellow when
the alarm cause is probably outside the unit, e. g. in case of a fibre-optic RX alarm.
The other alarm LEDs are green if the concerned module is in normal operation and
red if the module has an alarm.
Status 1 LED = summary alarm LED
1.) for 2 RUs in 1 subrack: Status 1 LED shows the status of the first RU
2.) for 1 RU & 1 EU in 1 subrack: Status 1 LED shows the status of the RU
3.) for 1 RU in 1 subrack: Status 1 LED shows the status of the RU
Status 2 LED = depending on which unit the alarm is raised.
1.) for 2 RUs in 1 subrack: Status 2 LED shows the status of the second RU
2.) for 1 RU & 1 EU in 1 subrack: Status 2 LED shows the status of the EU
3.) for 1 RU in 1 subrack: Status 2 LED shows any LED => no function