Figure 2. Shunt method of calibration, using incoming rf signal.

Figure 2. Shunt method of calibration, using incoming rf signal.

control, and subtracting 1-db from the

of setting the output controls of the im-

t o t a l value.

pulse generator to produce a meter pointer

d e f l e c t i o n which is 1-db higher than the

pointer deflection caused by the incoming

6. Basic Methods of Measurement

rf signal alone. T h e intensity of the in-

c o m i n g rf signal is then determined by

A m p l i t u d e and frequency measurements

adding the meter indication (in db) to the

of narrow-band and broadband signals may

setting of the SIGNAL ATTENUATOR DB