Specifications - AE Techron 7548 Operator's Manual

8 Specifications

8.1 Performance (Controlled Voltage Mode)
Note: Testing performed at 208V/415V AC. The 7548/7794/7796
amplifiers can operate from 400V AC ±10%. Since these amplifiers
have an unregulated power supply, low line conditions may slightly
affect the maximum voltage potential.
Accuracy was measured when driven into a 10-ohm load with
between 0.1VDC and 6VDC or between 0.2V AC and 5V AC
presented at its inputs.
Frequency Response: DC - 30 kHz, +0.1 to -0.5 dB
Maximum Continuous Output Power:
7548: 3300 watts RMS
7794: 5000 watts RMS
7796: 5000 watts RMS
7796HC: 2500 watts RMS
Slew Rate: >35 V/μs
Phase Response (10 Hz – 10 kHz):
7548: ± 5 degrees
7794, 7796 and 7796HC: ±8.3 degrees
Unit to Unit Phase Error: ±0.1 degrees at 60Hz
Output Offset: Less than 200 µV
Output Offset Current: Less than 10 mA DC
Output Impedance:
3.2 mΩ in Series with 2.2 µH
DC Drift: ± 400 µV (from cold to maximum operating
temperature); ±200 µV (after 20 minutes of operation)
Residual Noise, 10 Hz to 20 kHz: Less than 250 μV
THD, DC - 20 kHz,
7548, 7794 and 7796HC: >0.25%
7796: >0.2%
Input Characteristics,
Balanced with ground: Three-terminal barrier-
block connector, 20 kΩ differential
Unbalanced: BNC connector, 10 kΩ single ended
Gain:
Voltage Mode: 20 volts/volt
Current Mode: 20 amperes/volt
Gain Linearity (over input signal, from 0.2V to 5V),
DC: 0.0125%
AC: 0.030%
Max Input Voltage:± 10V balanced or unbalanced
Input Impedance: 20 kΩ differential
Input Sensitivity:
3.0V input for 3800W output into 1 ohm (adjustable)
Common Mode Rejection Range:
±11 VDC maximum
Common Mode Rejection Ratio,
7548: Better than -65 dB
7794, 7796, 7796HC: Better than -70 dB
36
7548/7794/7796/7796HC OPERATOR'S MANUAL – SECTION 8
8.2 Display, Control, Status, I/O
Front Panel
LED Displays Indicate: Run, Ready, Standby, Stop,
and Fault conditions in the output stage
LCD Display: Lists type of fault condition and gives
suggested corrective action
Soft-Touch Switches for: Run (Enable), Stop, Reset
LCD Display: Can be configured for up to four simul-
taneous displays reporting one, two, or all four of the
following: V
conditions that occur and suggests corrective action.
Back Panel
Power Connection: NEMA-style locking receptacle;
matching AC connector also included
Signal Output: 4-position terminal barrier block
(OUTPUT/COMMON/SAMPLED COMMON/CHAS-
SIS GROUND); resistor installed between SAMPLED
COMMON AND CHASSIS GROUND is a 2.7-ohm,
2W, 5%, metal-oxide resistor
Signal Input: User-selectable Unbalanced BNC or
Balanced Barrier Strip
Interlock Connector: 25-pin D-sub connector used
for amplifier control and status applications; also
used in multi-amplifier applications
8.3 Communication Capabilities
Current Monitor: ± 1V / 20A ±1%
Reporting: System Fault, OverTemp, Over Voltage,
Overload
Control: Force to Standby; Reset after a fault
8.4 Protection
Over/Under Voltage: ± 10% from specified supply
voltage amplifier is forced to Standby
Over Current: Breaker protection on both main
power and low voltage supplies
Over Temperature: Separate Output transistor, heat
sink, and transformer temperature monitoring and
protection
8.5 Physical Characteristics
Chassis: Black powder-coat chassis with all alu-
minum construction; designed for stand-alone or
rack-mounted operation. The amplifier occupies five
(7548) or seven (7796) EIA 19-inch-wide rack units.
Weight:
7548: 103 lbs (46 kg), Typical shipping:
115 lbs (52.2 kg)
7794, 7796 and 7796HC: 153 lbs (69 kg),
Typical shipping: 168 lbs (76.2 kg)
Information subject to change
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97-7796264_09-04-2020