Tektronix RSA3303A Service Manual page 76

Performance Tests
4- 28
d. Modify the default settings:
H Press the FREQUENCY/CHANNEL key on the front panel.
H With the Center Freq side key, set the frequency to 50 MHz using
the numeric keypad.
H Press the SPAN key on the front panel.
H With the Span side key, set the span to 10 MHz using the general
purpose knob.
H Press the AMPLITUDE key on the front panel.
H With the Ref Level side key, set the reference level to - -20 dBm
using the general purpose knob.
H Press the RF Atten/Mixer side key to select RF Att.
H With the RF Att side key, set the attenuation to 0 dB using the
numeric keypad or the general purpose knob.
2. Measure the reference amplitude at 0 dB attenuation:
a. Press the PEAK key on the front panel to place the marker on the
signal peak.
b. Record the peak amplitude at the marker readout as the reference value.
(Let the value be P
3. Check the amplitude for the attenuation from 2 to 30 dB:
a. Press AMPLITUDE > RF Att and set the attenuation (initially 2 dB).
b. Press the PEAK key on the front panel to place the marker on the
signal peak.
c. Record the peak amplitude at the marker readout. (Let the value be P
d. Check that the error (P
e. Repeat substeps 3a through d for attenuation from 2 to 30 dB in 2 dB
steps.
4. Modify the generator controls:
Amplitude
)
0.
- - P ) is within 0.5 dB.
X 0
. . . . . . . . . . . . . . . . - -5 dBm
RSA3303A & RSA3308A Service Manual
.)
X