Tektronix RSA3408B, Service Manual

Page: 82 / 250

Performance Tests
3- 50
RSA3408B Analyzer Service Manual
50
Ω
N-N coaxial cable
Output
Signal generator
RSA3408B
2. Check spurious response:
a. Modify the generator controls:
Set the generator output frequency to the value as shown in Table 3--7
(initially 25 MHz).
b. Modify the analyzer controls:
H
Press the
Frequency/Channel
key on the front panel.
H
The Center Freq menu item is selected by default. Set the frequency
to the same value as the generator output using the numeric keypad.
c. Measure the amplitude:
H
Press the
Marker Setup
key on the front panel.
H
Press the Select Marker side key to select 1 .
H
Press the
Peak
key and then the Markers:
B
(marker down) key
once to place the first marker at the peak on the noise floor.
H
Press the
Select Marker
side key to select
2
.
H
Press the
Peak
key to place Marker 2 on the signal peak.
H
Read the delta marker readout (
Δ
1--2) on the screen. Check that the
components other than the carrier meet the requirements shown in
Table 3--7 (initially --73 dBc).