Tektronix RSA3408B, Service Manual

Page: 69 / 250

Performance Tests
RSA3408B Analyzer Service Manual
3- 37
3. Determine the reference power in 0 to --30 dBm:
a. Measure the power and record it as Pr0.
b. Set the signal generator amplitude from 0 to --30 dBm in 10 dB steps and
measure the power as Pr1 to 4, respectively.
Signal generator amplitude Reference power
+10 dBm Pr0
0 dBm Pr1
--10 dBm Pr2
--20 dBm Pr3
--30 dBm Pr4
c.
Disconnect the power sensor input from the generator.
4.
Modify the hookup:
a. Connect the generator output through a 50
Ω
N-N coaxial cable to the
spectrum analyzer (Item 5) input. See the following figure.
50
Ω
N-N coaxial cable
Output
Signal generator
Spectrum analyzer
b. Set the signal generator control:
Amplitude --30 dBm . . . . . . . . . . . . . . . .
c. Set the spectrum analyzer controls :
Measurement mode SA mode . . . . . . . .
Reference level --20 dBm . . . . . . . . . . . .
Center frequency 100 MHz . . . . . . . . . .
Span 1 MHz . . . . . . . . . . . . . . . . . . . .
RF attenuation 10 dB . . . . . . . . . . . .
RBW Auto . . . . . . . . . . . . . . . . . . . .