BRL Test, Inc.

Electronic Test Equipment

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7280 - Signal Recovery Lock-in Amplifiers


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  • Model: 7280
  • Manufactured by: Signal Recovery
  • High end frequency limit: 2.00MHz
  • Dynamic Reserve: > 100 dB
  • Min. Time Constant: 1 usec
  • Max. Time Constant: 4 msec
  • Extra Specifications: DUAL PHASE WIDE BANDWIDTH DSP LOCK-IN AMPLIFIER
The model 7280 DSP Lock-in Amplifier is an exceptionally versatile instrument with outstanding performance. With direct digital demodulation over an operating frequency extending up to 2.0 MHz, output filter time constants down to 1 µs and a main ADC sampling rate of 7.5 MHz it is ideal for recovering fast changing signals. But unlike some other high frequency lock-ins, it also works in the traditional audio frequency band. Naturally, the instrument includes the extended operating modes like dual reference, dual harmonic and virtual reference made popular by the 7260 and 7265, as well as the spectral display mode used to aid reference frequency selection. It also includes GPIB and RS232 interfaces for remote computer control and a range of auxiliary analog and digital inputs and outputs. Software support is available in the form of a LabVIEW driver supporting all instrument functions, and the Acquire™ lock-in amplifier applications software. The driver and a demonstration version of the software, DemoAcquire, are available for download from this site.
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