Test Equipment Home --> Lock-in Amplifiers --> DL Instruments
| Model | Low end frequency limit | High end frequency limit | Voltage Noise | C.M.R.R. | Dynamic Reserve | Min. Time Constant | Max. Time Constant |
| 3981 | 5.00 Hz | 20.00 kHz | | | 30 dB in 1X LO DRIFT mode | 3.33 msec | 3.33 sec | 410 | 1000.00 mHz | 100.00 kHz | 20 nV/vHz at 1 kHz | 100 dB at 1 kHz | | 1 msec | 31.6 sec |
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