Model 7310
Noise Rejecting Voltmeter
The model 7310 Noise Rejecting Voltmeter is a flexible instrument designed to offer the engineer or scientist the ability to measure signals that are accompanied by unwanted noise or interference. The unit can best be visualized as a digital filter, implemented using the latest digital signal processing (DSP) techniques, followed by a true rms to DC converter and digital meter. The filter can be configured as a bandpass stage with adjustable center frequency and Q-factor, as a low-pass filter with adjustable cut-off frequency or bypassed for broadband measurements. A separate analog line-frequency rejection filter adds yet further filtering flexibility.

The model 7310 is very easy to use. All instrument controls are adjusted using soft-touch, front panel push-buttons, with the present settings and measured outputs being displayed on the centrally located, cold fluorescent backlit dot-matrix LCD.