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Information subject to change
15
7224 & 7226 OPERATOR’S MANUAL –
SECTION 4
4.1.5 Fault Status Indicators
Four Fault Status indicators are located on the
amplifier front panel (see
Figure 4.4
). These LEDs
monitor the internal conditions of the amplifier
and will illuminate when a fault condition occurs.
Depending on the fault condition and the configu
-
ration of the unit, the amplifier may be placed in
Standby mode when a fault condition occurs. Re-
fer to the chart in
Figure 4.6
to determine the fault
condition being indicated and the action required
to clear the fault condition.
NOTE:
See the
“Applications”
section for fault
status indicator interpretation when operating a
multi-amp system.
4.2
Back-Panel Controls
and Connectors
This section provides an overview of Back-Panel
controls and connectors found on the 7224/7226.
Please refer to
Figure 4.7
for visual locations.
AC Supply –
Standard 20 amp 3-pin IEC-type
male connector.
Output Terminal Strip –
Connect output lines
from the load to this 3-position terminal strip with
#8 screws. It accepts up to #10 AWG wire.
BNC Input Connector –
This input option pro-
vides a standard unbalanced input.
Input Selector Switch –
When in the LEFT
position, the unbalanced BNC input connector is
enabled. When in the RIGHT position, both unbal
-
anced BNC and balanced Phoenix® input con-
nectors are enabled. The Input Select switch also
functions as a Ground Lift switch for the Unbal
-
anced BNC input connector. If circulating currents/
ground loops/60-Hz Hum occur when using the
unbalanced input, move the Input Select switch to
the right to lift the ground on the connector.
Terminal Block Input Connector –
This input op-
tion provides a balanced input. It can also be used
as an unbalanced input.
Interlock Connector –
This 25-pin, D-sub connec
-
tor is used for interlocking and combining functions
in a system of multiple amplifiers. It can also be
used for remote control and monitoring applica
-
tions (see the
“Applications”
section for more
information).
Figure 4.7 – Back Panel Controls and Connectors
