Wavetek 3000 Instruction Manual page 50

4 .
Disconnect the power sensor from the
Signal Generator
RF out connector .
Connect a standard 10 dB attenuator pad
to the RF out connector .
Connect the output of the atten-
uator pad to the
spectrum analyzer as shown in Figure 4-1 .
5 .
Set the spectrum analyzer to 520 MHz,
the bandwidth to
10 kHz, the frequency span per
division to 2 kHz, and the
tuning stabilizer switch on .
Set the video filter to 100 Hz
and the vertical display to 2 dB per division .
MODEL 3000
SIGNAL GENERATOR
SPECTRUM ANALYZER
RF Out
O
STANDARD
ATTENUATOR
PAD
Figure 4-1 .
Step Attenuator Accuracy Setup
6 . Use the
log reference controls to obtain
one division below
the log reference line of
analyzer display .
Center the trace in the
fine tuning .
7 . Set the OUTPUT step attenuator
to -10 dBm .
9 . Adjust the MODULATION FM/AM control
erator to realign the peak of the trace
the log reference line as in step 6 .
RF
Input
a peak trace
the spectrum
display with
of the Signal Generator
8 .
Disconnect the 10 dB
attenuator pad from the setup and
reconnect the spectrum analyzer to
the RF out connector of
the Signal Generator .
of the Signal Gen-
one division below
10 .
Disconnect the cable to the Signal Generator
RF out
connector . Connect the power sensor to the Signal Generator
RF out connector . Set the OUTPUT step attenuator to 0 dBm .
11 .
Observe the difference between the actual power meter
reading and the +7 dBm reference
setting in step 3 . The
difference or error should be ±0 .7 dB maximum . Record the
error on line 12 of the PTR .