Sonifex NICA X, Reference Manual

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NICA X Reference Manual
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Restore Detect
If the Reserve service is active then the Restore Detect selection is continually checked to see if the NICA X must
switch back to the Primary service. The options and their criteria are listed below. The Restore Detect must be
active for the ‘Up Time’ setting before the Reserve service is de-activated.
Restore Detect Method Description
EXTERNAL An External Opto Input programmed with remote control command CBI
defines the state of the external Primary service e.g.Active=good Inactive=fail
(This should also be the selection if you wish to use only manual intervention
via the front panel or CBS command)
FRAME The frame status is on for the Primary Channel of the NICA X.
AUDIO 1 Audio level above the threshold for channel 1
AUDIO 1 or 2 Audio level above the threshold for either channel 1 or channel 2
AUDIO 1 and 2 Audio level above the threshold for both channel 1 and channel 2
INDICATE 1 Depending on the Primary Mode either the X21 Indicate line or TA DCD for
channel 1 is active
INDICATE 2 Depending on the Primary Mode either the X21 Indicate line or TA DCD for
channel 2 is active
INDICATE 1 or 2 Depending on the Primary Mode either the X21 Indicate line or TA DCD for
channel 1 or channel 2 is active
INDICATE 1 & 2 Depending on the Primary Mode either the X21 Indicate line or TA DCD for
channel 1 and channel 2 are active
Down Time
When the Primary service is operating this is the value reloaded into the countdown timer while Fail Detect is false.
While the Fail Detect is true the system timer will count down. If the timer expires then the Reserve service will be
activated. If the Reserve service is activated but fails to connect or frame the system reverts to trying the Primary
service.
Up Time
When the Reserve service is operating this is the value reloaded into the countdown timer while Restore Detect is
false. While the Restore Detect is true the timer will count down. If the timer expires then the Primary service will
be activated.
Silence Level
The silence detector level is programmable at -24dBu, -18dBu, -12dBu or -6dBu ( ± 1.5dBu). When the audio input
into the detector drops to this level then silence is said to be detected.
Number of Retries
This is the number of retries the NICA X performs when dialling the Backup ISDN numbers before switching back
to standby or Primary service.
Monitor Enable
When the unit goes into Reserve service it will route its output audio into the codec section audio input if the
monitor is enabled. This means the remote codec involved in the backup can monitor the actual audio output of
the NICA X. (This feature requires the audio switch module).
Monitor Time
This is the length of time the audio is switched for monitoring as above.
Front Panel Control & Remote Command Control
The Front Panel keys PRIMary and REServe (for NICA X-2) and the Remote Control Command CBS (which could be
programmed into a Function key or Opto Input) are manual ways of switching between the Primary and Reserve
service. This is sometimes the only way to switch back to Primary if the NICA X is providing the Primary and
Reserve service.
6.3 - Backup Display - NICA X-2 only
When the NICA X is set to BACKUP ENABLE - ON the display of the NICA X-2 shows the Backup Status Menu. The
two keys Primary and Reserve allow the state of the system to be changed between Primary and Reserve
Operation. This is protected by the Config PIN entry.