Information subject to change
97-2105006_4-2-15
2105 OPERATOR’S MANUAL –
SECTION 6
24
6.3
), or CC2 which allows installation of a custom
RC network.
STEP 2: Determine Required
Compensation.
When operating an amplifier in Controlled Cur
-
rent mode, the load becomes an integral part of
the system. In order to determine the required
compensation for your load, begin by consulting
the following table to determine the approximate
compensation capacitance (C) required based on
the inductance of your load:
Load Inductance (L)
<200 µH <>200 µH
to <1 mH
>1 mH
Compensation
Capacitance
(CC)
0.001 µF
0.01 µF
0.1 µF
NOTE: Load Resistance (R) is assumed to be
<5 ohms.
STEP 3: Determine if Default or Custom
Compensation is Required.
If your load inductance is between 200 microHen
-
ries and 1 milliHenry, and your load resistance
is less than 5 ohms, then you can likely use the
default compensation provided by the amplifier’s
factory-installed RC network. To select the factory-
default compensation, please see
STEP 4
to
follow.
When operating in Controlled Current (CC) mode,
a compensation circuit is required to ensure ac
-
curate output current. Since the load is a critical
circuit component in CC mode, the inductive and
resistive values of the load will determine the
required compensation values. While the factory-
default compensation setting will be sufficient
for some applications, the compensation setting
may also be adjusted in the field. The following
section describes methods for determining and
setting proper compensation when operating in
Controlled-Current mode.
6.1.3 Controlling Compensation for
CC Operation
AE Techron 2105 amplifiers can be configured for
either Controlled Voltage (CV) or Controlled Cur
-
rent (CC) mode of operation. When operating the
amplifier in Controlled Voltage (CV) mode, com
-
pensation is not required. However, when operat
-
ing in Controlled Current (CC) mode, the amplifier
load becomes an integral part of the system. In
order to ensure system stability and to control
available bandwidth, compensation via an RC
network is required for CC operation. The following
steps will allow you to compensate your amplifier
for operation in CC mode safely and effectively.
STEP 1: Check Amplifier Operation in
CV mode.
We recommend that you power-up and enable the
amplifier in Controlled Voltage mode without at
-
taching a load before configuring your amplifier for
Controlled Current operation. This will allow you
to verify that the input signal and the amplifier are
operating correctly.
Once this initial check is completed, power down
the amplifier and access the amplifier main board
to place the amplifier in CC mode. (Refer to the
“
Advanced Configuration”
section for more infor-
mation.)
One of two compensation settings can be selected
via jumpers on the main board: CC1 which en-
ables the factory-installed RC network (see
Figure
Figure 6.3 – Factory-installed Default RC Network
