97-7796264_09-04-2020
Information subject to change
19
7548/7794/7796/7796HC OPERATOR’S MANUAL – SECTION 4
4.3.1 Master or Follower Setting
The amplifier can be configured for operation
within a multi-amplifier system, with up to four am
-
plifiers configured for series or parallel operation.
To enable the amplifier for use as a
Follower
am-
plifier in a multi-amplifier system, adjust the jumper
settings on
Jumpers P1
and
P2
by placing
BOTH
jumpers in the
DOWN
position (lower pair of pins).
To enable the amplifier for use as a
single ampli-
fier
or as the
Master amplifier
in a multi-amplifier
system, adjust the jumper settings on
Jumpers P1
and P2
by placing
BOTH
jumpers in the
UP
posi-
tion (upper pair of pins). See
Figure 4.1.
For information on input and output wiring and
required accessories for multi-amplifier applica
-
tions, please refer to the
AE Techron Multi-Amp
Configuration Guide
available for download from
the AE Techron website at
www.aetechron.com.
4.3.2 Gain Trim Control
The amplifier allows control of gain via a multi-
turn potentiometer (R210).
R232
resistor sets the
coarse gain and
R247
sets the range or sensitivity
of
R210.
See
Figure 4.2.
4.3.3 Controlled Voltage or Controlled
Current Setting
To allow the amplifier’s output voltage to be con
-
trolled by its input voltage signal (
CV mode
), place
Jumper J4
in the
RIGHT
position (right pair of
pins). To allow the amplifier’s output current to be
controlled by its input voltage signal (
CC mode
),
place J
umper J4
in the
LEFT
position (left pair of
pins). See
Figure 4.3.
Figure 4.1 – Master or Follower Setting
Figure 4.2 – Gain Trim Control
Figure 4.3 – Controlled-Voltage or
Controlled-Current Mode Setting
In Controlled-Current Mode, the load is part of the amplifier
circuit, and the relationship of the load to the amplifier is
critical. For proper and safe operation in Controlled-Current
mode, you must obverve the following guidelines:
1.
Properly attach a load before operating the amplifier.
Use only the Output and Sampled Common terminals. DO
NOT use the Common terminal.
2.
DO NOT use a blocking capacitor.
The load must have
a DC path.
3.
Never leave the load open.
If you feel the load must be
fused, which could lead to a potential open circuit, please
contact AE Techron Application Engineering department.
4.
Check to make sure the load has some inductive
component.
5.
Provide appropriate Compensation for the load.
6.
Turn off the amplifier immediately if oscillation oc
-
curs.
Failure to follow these guidelines may result
in damage to the amplifier or load.
CAUTION
Summary of Contents for 7548
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