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SIGNAL RECOVERY is a world leader in the design and manufacture of lock-in amplifiers, signal averagers, amplifiers, light choppers and specialized voltmeters.
Some of the high grade Lock in Amplifiers offered by Signal Recovery are the following:
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Model 7280
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. In addition to its excellent technical specifications, it is also very easy to use. Specifications: Voltage and current sens, 10nV max sens, 0.5 Hz-2.0 MHz, 100dB reserve, Spectral Display, Dual Reference, Dual Harmonic, manual and computer control, line power.
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Model 7280BFP
Dual Phase, Wide Bandwidth DSP Lock-in Amplifier with Blank Front Panel
The model 7280BFP has exactly the same specifications as the standard model 7280, but can only be operated from a remote computer. As such, it is ideal for use both by end users and manufacturers in complex systems where front-panel operation is not required.
Control of the unit is via either the RS232 or GPIB interfaces, using simple mnemonic-type ASCII commands. A second RS232 port allows up to sixteen 7280BFP or compatible instruments to be operated from a single RS232 computer port by connecting them in a "daisy-chain" configuration.
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Model 7265
Dual Phase DSP Lock-in Amplifier
The model 7265 uses the latest digital signal processing (DSP) technology to extend the operating capabilities of the lock-in amplifier to provide the researcher with a central measurement and control facility.
Operating over a frequency range of 1 mHz to 250 kHz, the model 7265 offers full-scale voltage sensitivities down to 2 nV and current sensitivities to 2 fA. The unit has a choice of operating modes, signal recovery or vector voltmeter, for optimum measurement accuracy under different conditions, and the use of DSP techniques ensures exceptional performance.
Specifications: Voltage and current sens, 2nV max sens, 1mHz-250kHz, 100dB reserve, Spectral Display, Dual Reference, Dual Harmonic, manual and computer control, line power.
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Model 7225
Dual Phase DSP Lock-in Amplifier
The model 7225 offers a cost-effective solution to the researcher needing the performance provided by DSP demodulation but not requiring the additional features or higher operating frequencies. The unit is available both as a conventional instrument with front-panel controls (model 7225) or with a blank front panel (model 7225BFP) for OEM (or multiple unit) use where computer only operation is acceptable.
The instrument performs all of the normal measurements of a dual phase lock-in amplifier, measuring the in-phase and quadrature components, vector magnitude, phase angle and noise of the input signal.
Specifications: Voltage and current sens, 2nV max sens, 1mHz-120kHz, 100dB reserve, manual and computer control, line power
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Model 7225 BFP (Computer Control Only)
Black Panel Dual Phase DSP Lock-in Amplifier
The model 7225 BFP is a computer (only) controlled version of the model 7225. It is supplied in the same cabinet 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. Same specifications as that of the model 7225.
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Model 5105 (Computer Control Only)
Dual Phase Lock-in Amplifier
The model 5105 is a compact dual-phase lock-in amplifier ideal for many signal recovery applications not demanding the performance offered by more sophisticated units in the SIGNAL RECOVERY range. It does not incorporate controls for manual operation but instead is operated entirely via a RS232 interface using simple ASCII character string commands. This approach allows the unit to be located closer to the signal source than is the case with PC card based instruments, thereby improving performance.
Specifications: Voltage input, 10uV-1V, 5Hz-20kHz (-100kHz preset), 80dB reserve, computer only operation, line or low voltage
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