86-10-65202180
Model 7225BFP was discontinued from Oct.2010.Customer can use Model 7225 instead.
The model 7225 BFP is a computer (only) controlled version of the
model 7225. It is supplied in the same case style as the normal
unit but has a blank front panel except for a "power on" LED.
This instrument has been developed with the OEM or multiple user in
mind. It will prove very attractive to those applications where the
Lock-in Amplifier is an integral part of the measurement
electronics in larger commercial instruments. Experiments and
measurements requiring multiple Lock-in Amplifiers will also
benefit from this model.
With the exception of any front panel controls or connections the
unit offers the same specifications and facilities as the normal
7225.
Specifications
The table gives the specifications for the models 7225/7225BFP and 7265 DSP Lock-in Amplifiers. Where specifications differ between models they are shown on a gray background.
| 7225/7225BFP | 7265 | ||
| Input | |||
| Voltage | |||
| Mode | A only, -B only or Differential | A only, -B only or Differential | |
| Sensitivity | 2 nV to 1 V | 2 nV to 1 V | |
| Impedance | |||
| FET Device | 10 M // 30 pF | 10 M //30 pF | |
| Bipolar Device | 10 k // 30 pF | 10 k// 30 pF | |
| Noise | |||
| FET Device | 5 nV/√Hz at 1 kHz | 5 nV/√Hz at 1 kHz | |
| Bipolar Device | 2 nV/√Hz at 1 kHz | 2 nV/√Hz at 1 kHz | |
| C.M.R.R. | > 100 dB at 1 kHz | > 100 dB at 1 kHz | |
| Gain Accuracy | 0.2% typ (full bandwidth) | 0.2% typ (full bandwidth) | |
| Line Filter | attenuates 50, 60, 100, 120 Hz | attenuates 50, 60, 100, 120 Hz | |
| Current | |||
| Mode | Low-noise or Wideband | Low-noise or Wideband | |
| Sensitivity | |||
| Low | |||
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