User Manual

Short cable

Object cable

R3131-5E Oct.´98

OPTION

The tracking generator (OPT.74) is a monoblock option

which is integrated in R3131. It can generate constant level

signal synchronized with sweep frequency in the frequency

range up to 3 GHz and therefore can easily measure the

frequency characteristic of object device. Besides, with the

normalize function which cancels the frequency characteristic

of measuring system, highly accurate measurement is possible.

Because the output level can be set in a wide range (from 0 to

-59.9 dBm, in 0.1 dB steps), it can be used to measure filter

pass characteristic, cable loss, amplifier gain, etc.

For the measurement of reflection characteristic

With the SWR bridge, the reflection characteristic of antennas

and filters can be measured.

For the measurement of cable loss

With the short cable, the high-frequency loss characteristic of

cable can be measured from the differential when the object

cable is connected.

SWR

bridge

ZRB2

DUT

Open or

short terminator

Tracking generator option (OPT.74)