VAR4 / VAR12 / VAR20 - Operation Manual
sue: 03 complete, approved
ed
5. Move to, and select the
Frequency
menu item:
Is
Page 60 of 308
Page 60 of 308
6.3.4.2
Configuring an Amplifier’s Internal Audio Path AC Surveillance
6.3.4.2
Configuring an Amplifier’s Internal Audio Path AC Surveillance
AC surveillance tone parameters should be configured for all amplifier surveillance card
installed where AC surveillance is required, including all standby amplifiers.
AC surveillance tone parameters should be configured for all amplifier surveillance card
installed where AC surveillance is required, including all standby amplifiers.
!
!
6.3.4.2.1 Configuring
an
Amplifier’s AC Surveillance Tone Frequency Range
The amplifier surveillance cards monitor the amplifier health by means of AC surveillance tones, normally the
low frequency surveillance tone generated by the VAR Router outputs, as described in Section
“
12.4 Surveillance Tone Generation Configuration
”. The surveillance tone level is monitored at the amplifier
input and output, and any deviation from the configured threshold levels will be reported as a fault. Refer to
Section “
6.3.4.2.2 Configuring an Amplifier’s AC Surveillance Thresholds
” for surveillance tone threshold
configuration.
It is necessary to configure the amplifier’s surveillance tone range in order to enable the amplifier
surveillance card, as described in the following steps.
1. Select
Configuration
Æ
Frames
.
2. Scroll and select a mainframe from the configured mainframe list:
[Frame#nn - ]
Default values: n.a.
Note:
If no mainframe is configured, then a warning message will be displayed.
The mainframe description will be shown on the right side of the display, if defined.
3. Move to, scroll, and select a slot from the slot list:
Commission Description Temp [Slot#n]
Default values: ‘Slot#1’
Possible slots: 1 to 4
Note:
If the selected slot is not configured, then a warning message will be displayed.
4. Move to, and select the
AC Level
menu item:
Description [AC Level] DC Line Earth
[Frequency] Thresholds Interval
Содержание VAR12
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