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AE TECHRON MULTI-AMP CONFIGURATION GUIDE
3.7
Series System Wiring
Locate the Series configuration that you have selected to meet your application requirements: Section 3.8
for a Two-in-Series – Differential configuration or Section 3.9 for a Two-in-Series – Open-Ended
configuration. Then follow the steps provided to wire and test your 7000-Series Multi-amp System.
3.8
Two in Series – Differential
Complete the following procedures to connect your amplifiers for Two in Series - Differential operation.
3.8.1 Connect and Test DC Offset and Interlock
1.
Using a DB-9 high-voltage interlock cable, connect from the
MASTER OUTPUT connector on the SIM-BNC-OPTOC card of the
Master amplifier to the SLAVE INPUT connector on the SIM-BNC-
OPTOC card of the Slave amplifier.
2.
Using wiring appropriate for your application, load and expected
output, connect from the MASTER amplifier's back-panel output
connector labeled COM (2105/7224) or SAMPLED COMMON
(2110/2120/7548/7796) to the SLAVE amplifier's
COM/SAMPLED COMMON connector.
3.
On the MASTER amplifier, connect the output wiring to the back-
panel output connector labeled OUTPUT. On the SLAVE amplifier,
connect the output wiring to the back-panel output connector
labeled OUTPUT. IMPORTANT: DO NOT connect the load at this
time.
4.
Terminate the input of the Master amplifier using the resistor-
terminated barrier block connector (see Figure 3.7) or similar
device.
5.
Power up each amplifier by switching to ON the front-panel ON/OFF switch (2105/7224 amplifiers) or
moving the back-panel AC Mains Switch/Circuit Breaker to the ON (up) position
(2110/2120/7548/7796 amplifiers). Allow the amplifiers to come to the Ready state. When Ready, the
amplifier Ready and Run LEDs will be lit. Note: Some amplifiers that have been custom-configured may
require that you press the Enable button to bring the amplifier to the Ready state. Let the amplifiers run
for several minutes in Ready state to allow DC offsets to stabilize.
6.
Using a digital voltmeter set to DC, measure across each amplifier's back-panel output connector
terminals (OUTPUT to COM or SAMPLED COMMON) to verify that the DC offset of each amplifier is less
than 10 mVdc. See Figure 3.8. NOTE: If any amplifier's DC offset is greater than 10 mVdc, the amplifier
may require servicing. Contact AE Techron Technical Support.
7.
On the Master amplifier only, press the Stop button to place the amplifier in Standby mode.
8.
Verify that both Master and Slave amplifier enter Standby mode (Standby LED is lit).
3.8.2 Test Amplifier Gain
1.
With the amplifiers in Standby mode, remove the input signal terminator and connect a signal generator
to the BNC or Removable Barrier Block connector on the SIM-BNC-OPTOC card of the MASTER amplifier
ONLY.
2.
Apply a sine wave of 5 Vrms at 100 Hz at the Master amplifier input. Using a voltmeter measure across
each amplifier's back-panel output connector terminals (OUTPUT to COM or SAMPLED COMMON) to
verify an output from each amplifier of approximately 100 Vrms (gain of 20). See Figure 3.9. NOTE: If
any amplifier's gain varies significantly from the set gain of 20, the amplifier may require servicing.
Contact AE Techron Technical Support.
10
Information subject to change
ELECTRIC SHOCK HAZARD. Output potentials
from the amplifiers can be lethal. Make
connections only with amplifiers' AC power
OFF and input signals removed.
Figure 3.7 – Terminating the Amplifier Input
97-8002465_09-19-14
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