The Model 92 Series RF Millivoltmeter provides an accurate readout of measurements from the low radio frequencies to the gigahertz region, over a voltage range of 200 uV to 3 volts. It is a programmable, solid-state instrument of high sensitivity and accuracy, characterized by high input impedance (see Figures 1 and 2), excellent stability, and low noise. The Model 92 exhibits true rms response for input signals up to 30 millivolts, gradually approaching peak-to-peak above this level. The meter, however, is calibrated to indicate rms of a sine wave above 30 mV. Input and output connections for external control and readout are provided by a 22-pin card-edqe connector at the rear of the instrument. ■ A linear dc output, whose level is proportional to the rf input voltage, is also provided at a rear connector. This may be used to drive a recorder, remote indicator, or other analog devices. The 92 offers a convenient and accurate means for making a wide variety of measurements. Typical uses of this instrument include: In transistor testing the instrument may be used to measure 6, f , and other transistor parameter s. SWR and return loss measurement using the Model 92 Series with bridge methods, directional couplers, and adjustable or slotted lines. Gain and loss measurements in wide-band amplifiers, including such design characteristics as stage gain, flatness of the pass band, upper cut-off or corner frequency, negative feedback factors, and other parameters. Proper adjustment of tuned circuits in narrow-band amplifiers. The adjustment, measurement of performance, and evaluation of rf filter parameters. Measurement of vswr or return loss and attenuation of rf attenuators. Measurement of output levels of signal generators, adjustment of baluns, harmonic distortion of rf signals, and adjustment of circuits for minimum voltage (null) or maximum voltage (peak). The Model 92 is available in several optional configurations with a basic accuracy of 1% rdq. + 1% fs. The standard features of the instrument are; Remote programmability. Measures from 200 yV to 3V* from 10 kHz to 1.2 GHz. True rms response to 30 mV**. Convenient pushbutton ranging. DC analog output. Hiqh input resistance, low input capacitance. Overload protection to 400 Vdc and 10 Vac. SWR less than 1.2 up to 1.2 GHz. *To 30f) V, up to 700 MHz, with accessory 100:1 divider. **To 3 V, up to 700 MHz, with accessory 100:1 divider. The characteristics of the instrument include: high reliability, fast warmup (1 minute typical), long intervals between calibrations, plug-in PC boards for ease in servicing or modifying, light weight, and other advantages of solid state design.