GENERAL DESCRIPTION (cont)

The RF Probe with its full-wave crystal detecting circuit

produces a true RMS response without turnover, or harmonic errors

for all voltage levels below 0.03 Volt, gradually changing to

peak-to-peak reading (calibrated in RMS) at approximately 1.0 Volt.

The probe has a shunt capacitance of approximately 2.5 pF at levels

of 0.3 volt or higher, increasing slightly at levels of 0.1 Volt or

less. (see Fig. 2) The shunt resistance component shown in Figure 1

is a variable factor, depending on the voltage and frequency.

A db scale in red on the panel meter and range switch

provides a convenient means of expressing relative voltage measure-

ments.

There is no zero control but instead a balancing control

allows residual indications due to noise to be minimized resulting

in excellent stability and ease of reading even on the most

sensitive range.