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The SR844 is the widest bandwidth lock-in amplifier available from SRS. It provides uncompromised performance with a frequency range of 25 kHz to 200 MHz and up to 80 dB of drift-free dynamic reserve. The SR844 includes the many features, ease of operation, and programmability that you've come to expect from SRS DSP lock-in amplifiers.
- 25 kHz to 200 MHz range
- 80 dB dynamic reserve
- Time constants from 100 µs to 30 ks
(6, 12, 18 or 24 dB/oct rolloff) - "No Time Constant" mode
- Auto-gain, phase, reserve & offset
- Internal or external reference
- Two 16-bit DACs and ADCs
- GPIB & RS-232 interfaces
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