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Operation and Maintenance
The System Status indication comprises the following information:
Monitor status information of MONITOR-1/2:
NORMAL
EXECUTIVE
PREALARM
EXECUTIVE
ALARM
EXECUTIVE
FAULTY
EXECUTIVE
WARNING
BYPASS
Transmitter status information of TX-1/2:
AERIAL
ON
AERIAL
WARNING
AERIAL
OFF
AERIAL
SHUT-DOWN
DUMMY
OFF
DUMMY
SHUT-DOWN
MAINTENANCE status information:
NORMAL
WARNING
The actual operational mode (on display screen 'OPER. MODE') selected by the key-lock switch
may have the following states:
REMOTE
LOCAL
MAINTENANCE
* on some LCP front panels LOCK instead of MAINTENANCE is used
Ed. 01.04
Monitor is executive in normal operation.
Monitor is executive, corresponding transmitter TX 1/2 initiates a
pre-alarm condition in the Monitor.
Monitor is executive, corresponding transmitter TX 1/2 initiates an
alarm condition in the Monitor.
Monitor is executive, Monitor itself has faulty condition.
Monitor is switched to bypassed mode because of maintenance
purposes, Monitor is not in monitoring mode.
The output of the corresponding transmitter (TX-1/2) is connected
to the antenna (and CSB- or SBO-power is not switched off).
Transmitter BITE detects BITE warning in the corresponding trans-
mitter TX-1/2.
The output of the corresponding transmitter (TX 1/2) is connected to
the antenna (and CSB- or SBO-power is switched off).
Corresponding transmitter TX-1/2 is switched off due to monitor
alarm detection, TX is not ready for operation.
Corresponding transmitter TX-1/2 is connected with dummy load
and switched off via SW command, but ready for operation (after
switch-over command).
Corresponding transmitter TX-1/2 is switched off due to monitor
alarm detection, TX is not ready for operation.
No maintenance alert, maintenance data is in valid range.
Maintenance alert, i.e. problems during configuration or power
supply problems.
The equipment is operating in REMOTE mode (i.e. no local control
on LCP). Data can be requested from the PC connected with remote
control (RMMC) or from local PC, the programming of the station via
local or remote PC is possible (if user login level is high enough).
The equipment is operating in LOCAL mode. Data can be requested
from remote control side (RMMC), but not programmed. This is only
possible by local PC.
*
The equipment is locked (indication MAINTENANCE). This opera-
tional state is similar to the REMOTE mode, except that no data
programming is possible and the set of equipment operational
controls is the bare minimum needed for control tower personnel
to manipulate the equipment (e.g. transmitter on/off).
DVOR 432
Operation
3-3
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