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3. Make the following selections on the 56100A Net-
work Analyzer to normalize the step sweep.
a. Press
CALIBRATION
and follow the menu on
the display.
b. Press
AUTOSCALE
.
c. Press
OFFSET/RESOLUTION
and set the Reso-
lution to 0.5 dB.
4. On the 691XXB, press
Analog
to select the ana-
log sweep mode.
5. Adjust the ALC Slope as follows:
a. At the
$
prompt on the PC display, type:
slpcal
and press <ENTER>.
On the computer keyboard, the adjustment
keys are:
Slope
E
(Up)
D
(Down)
(all bands)
Offset
Q
(Up)
A
(Down)
(band 1-4 only)
b. Adjust the ALC Slope so that the power at the
start and stop frequencies (of the analog sweep
for band 0) match as closely as possible the
normalized straight line in step sweep mode.
When completed, press
n
for the next band.
4-26
690XXB/691XXB MM
ALC SLOPE
CALIBRATION
CALIBRATION
8.4 GHz
20 GHz
40 GHz
ALC Slope Before Adjustment
Normalized
Step Sweep
50. 60, or
65 (67) GHz
2 GHz
Figure 4-6.
ALC Slope Adjustment Waveform Display
Содержание 680 C Series
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