Tektronix RSA3408B, Service Manual

Page: 62 / 250

Performance Tests
3- 30
RSA3408B Analyzer Service Manual
3. Prepare for the test:
a. Hook up the instruments:
Connect the signal generator output through a 50
Ω
N-N coaxial cable to
the RSA3408B Input . See Figure 3--10.
50
Ω
N-N coaxial cable
Output
Signal generator
RSA3408B
Figure 3- 10: Hookup for checking the absolute amplitude accuracy
b.
Initialize the analyzer:
H
Press the
System
key on the front panel.
H
Press the Reset All to Factory Defaults side key.
c. Modify the default settings:
H
Press the Frequency/Channel key on the front panel.
H
The Center Freq menu item is selected by default.
Set the frequency to 25 MHz using the numeric keypad.
H
Press the Span key on the front panel.
H
The Span menu item is selected by default.
Set the span to 10 MHz using the general purpose knob.
d.
Calibrate the analyzer gain:
H
Press Cal > Calibrate Gain .
H
Press Amplitude > Auto Level .