97-7224006_3-31-15
Information subject to change
17
7224 OPERATOR’S MANUAL – SECTION 3
3.3 Back-Panel Controls
and Connectors
This section provides an overview of Back-Panel
controls and connectors found on the 7224. Please
refer to
Figure 3.5
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.
Unbalanced BNC Input Connector –
This input
option provides 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.
Balanced Phoenix® Input Connector –
This
input option provides a balanced 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 3.9 – Back Panel Controls and Connectors
