97-7796264_09-04-2020
Information subject to change
15
7548/7794/7796/7796HC OPERATOR’S MANUAL – SECTION 3
3.2.3 Main Status Indicators for
Multi-amplifier Systems
The Main Status indicators on each amplifier in
a multi-amp system are used to determine the
operational status of the amplifier. When evaluated
along with the statuses of other amplifiers in the
system, the Main Status indicators can be used
to determine the system status and the action
required to return the system to Run mode. See
Figure 3.5.
Figure 3.5 – Main Status Indicators for Multi-Amplifier Systems
Indicator is lit
Indicator is not lit
Indicator may be lit
Main Status
of One or
More Amps in
the System
Main Status of
Other Amps in
the System
State of Operation
Action Needed to Return to
Run Mode
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Run mode:
All of the amplifiers in the
system are in Run mode. The amplifiers’
high-voltage transformers are energized
and the system will amplify the input
signal.
N/A
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Remote Standby Condition:
All of
the amplifiers in the system are being
held in Standby mode by an external
condition. In Standby mode, the ampli-
fiers’ low-voltage transformers are ener
-
gized but the high-voltage transformers
are not.
If the amplifiers remain in Standby
mode, the system is being held in
Standby by remote control through the
SIM Interlock I/O connector. Open the
Enable/Standby switch to clear this
remote Standby condition and return
the system to Run mode. See the
Applications
section of this manual for
more information on remote amplifier
operation.
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
System Not Ready:
If one or more
of the amplifiers has no LEDs lit, the
amplifier has no power or has not been
turned on, and the other amplifiers in the
system will be held in Standby mode.
In Standby mode, the amplifier’s low-
voltage transformer is energized but the
high-voltage transformers are not.
Make sure all amplifiers have AC
power and have been turned on. When
all amplifiers attain Standby status, all
amplifiers in the system will simultane
-
ously be placed in Run mode.
Run
Ready
Standby
Stop
Run
Ready
Standby
Stop
Stop mode:
When the Stop button on
any amplifier in the system is pressed,
that amplifier will enter Stop mode and
all other amplifiers will enter Standby
mode. The system may also enter Stop
mode after powering up if one or more
amplifiers in the system is configured
to enter Stop mode on startup. In Stop
mode, the amplifier’s low-voltage trans
-
former is energized but the high-voltage
transformers are not.
To release the system from Stop mode,
press the Enable button on the ampli-
fier displaying the Stop mode status.
3.2.4 Fault Status Indicators for
Multi-Amp Systems
Four different fault error messages may be dis
-
played on the amplifier’s front panel LCD screen
when a fault condition occurs. All amplifiers in the
system may be placed in Standby mode when a
fault condition occurs, depending on the fault con
-
dition and the configuration of the system. Typical
-
ly, the system can be released from Standby mode
by pressing the Reset button on the amplifier dis
-
Summary of Contents for 7548
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