Agilent Technologies 8564EC Service Manual page 96

6. If the marker reads less than −60.1 dBm, rotate A4R826 CAL OSC
If A4R826 has inadequate range, refer to "Inadequate CAL OSC
NOTE
AMPTD Range" in Chapter 9.
7. Press
8. Repeat steps 7 and 8 until the marker reads −60 dBm ±0.1 dB.
9. Disconnect the test cable from A5J3 and reconnect W29 to A5J3.
A5 Reference Attenuator Adjustment
10.Set the spectrum analyzer reference level to −60 dBm. If markers
11.Set the 3335A
12.Connect a BNC cable between the 50Ω output of the 3335A and the
13.On the spectrum analyzer, press
14.Press
15.Change the 3335A
16.Press
17.Note the ∆MKR amplitude. Ideally, it should read 50.00 dB ±0.1 dB.
18.If the ∆MKR amplitude is less than 49.9 dB, rotate A5R343 15 dB
19.Press
20.Repeat steps 11 through 20 until the ∆MKR amplitude reading is
Chapter 3
AMPTD one-third turn clockwise for every 0.1 dB less than
−60 dBm. If the marker reads greater than −59.9 dBm, rotate
A4R826 CAL OSC AMPTD one-third turn counter clockwise for
every 0.1 dB greater than −60 dBm. See
the location of A4R826. A change in the displayed amplitude will not
be seen until
ADJ CURR IF STATE
ADJ CURR IF STATE
complete the adjustments, the displayed amplitude and marker
reading should change.
are displayed, press
MKR
AMPLITUDE
spectrum analyzer INPUT 50Ω .
panel knob or step keys to place the peak of the displayed signal
3 dB to 5 dB below the reference level.
PEAK SEARCH
Set the spectrum analyzer reference level to −10 dBm.
AMPLITUDE
on the spectrum analyzer.
CAL
ATTEN one-half turn counterclockwise for each 0.1 dB less than
50.00 dB. If the ∆MKR amplitude is greater than 50.1 dB, rotate
A5R343 15 dB ATTEN one-half turn clockwise for each 0.1 dB
greater than 50.00 dB. Do not adjust A5R343 more than five turns
before continuing with the next step.
ADJ CURR IF STATE
amplitude reading.
50.00 dB ±0.1 dB.
Figure 3-8 on page 118
is pressed.
. After allowing the analyzer time to
and
MARKERS OFF
to −60 dBm.
and
CAL REF LVL ADJ
and on the spectrum analyzer.
MARKER DELTA
to −10 dBm.
on the spectrum analyzer. Note the ∆MKR
Manual Adjustment Procedures
2. IF Amplitude Adjustments
for
.
. Use the front
119