Multifunction Calibrator
Support Equipment and Services
7
52120A Amplifier
The Fluke Calibration 52120A Transconductance Amplifier is an external unit that
operates under calibrator control to extend the ac and dc current output range of the
5730A Calibrator. A maximum of three 52120A amplifiers can be connected, as much as
tripling the current output available. The 52120A amplifier can:
• Accept full scale dc or ac inputs of 2 volts or 200 mA from any calibrator, signal
generator or power supply
• Deliver proportional output current in ranges of 2 A, 20 A or 120 A at frequencies to
10 kHz
• Offer enhanced accuracy to 140 ppm when used in closed-loop mode with a 6105A
Electrical Power Standard
• Operate in parallel with one or two other 52120As to deliver 240 A or 360 A
• Source current with compliance voltage of 4.5 V rms or 6.4 V peak
• Drive inductive loads to 1 mH
• Drive optional current coils to deliver test currents of 3000 A or 6000 A
Support Equipment and Services
Fluke Calibration supports calibration requirements with precision, high-quality
equipment and a wide range of services. Depending on the calibration needs, location,
and capabilities, the 5730A Calibrator can be supported independently or with Fluke
Calibration services for part, or all support needs. The subsequent paragraphs describe the
support equipment and services offered by Fluke Calibration for the Calibrator. For
specifications and ordering instructions for this support equipment and other Fluke
Calibration instruments, refer to the Fluke Calibration catalog, or contact a representative
at a Fluke Calibration Sales and Service Center. See “How to Contact Fluke Calibration”.
732B Direct Voltage Reference Standard
The Fluke Calibration 732B is a rugged, easily transported solid state direct voltage
reference standard with a highly predictable 10 V output. The 732B can be short-
circuited, even for extended periods of time, without damage or loss of stability. It
maintains full specified stability over a temperature span of 18 °C to 28 °C.
The 5730A Calibrator uses a 10 V reference standard such as the Fluke Calibration 732B
in its semi-automated calibration procedure to establish external voltage traceability.
Chapter 7 of the Operators Manual describes this procedure.
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