24. Digital Storage Display Adjustments
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
Press
Key in
(
FREQUENCY SPAN
]
0 Hz,
[
SWEEP TIME
]
100
Disconnect cable 9 (white) from
and connect to
test connector on
Intensity Control; the other end of
the cable remains connect connected to
Select TRIGGER (VIDEO) and adjust front-panel LEVEL control for
a stable display on instrument CRT.
Adjust
SWP OFFSET so that the signal trace begins at
the left edge graticule line. Refer to Figure 3-105 for location of
adjustment.
Adjust
X GAIN for twenty cycles displayed on the
CRT graticule. This may be made easier by adjusting
SWP OFFSET so that the first peak is centered on the left edge
graticule line, then adjusting
X GAIN for two cycles
per division with the twenty-first cycle being centered on the
right edge graticule line.
SWP OFFSET must then be
readjusted so that the trace begins at the left edge graticule line.
See Figure 3-105. for location of adjustment.
Remove the cable 9 (white) from
test connector
and reconnect to
Remove cable 7 (violet) from
Short
to
or connect an SMB snap-on short to
Connect DVM to
and DVM ground to
Press LIN pushbutton.
DVM indication should be 0.000 f0.002 V dc.
Adjust
YOS to align the bottom graticule line with the
fast sweep signal trace.
Remove the short between
and
(or the SMB
snap-on short) and reconnect cable 7 (violet) to
Key in
[
CENTER FREQUENCY
)
100 MHz. Connect CAL OUTPUT to RF
INPUT. Press LOG
[
ENTER
10
Connect the DVM to
and the DVM ground to the IF
casting.
Press
(
REFERENCE LEVEL
)
and adjust DATA knob and the frontpanel
AMPTD CAL adjust for DVM indication of
f0.002 V dc.
Adjust
Y GAIN to align the top graticule line with the
fast sweep signal trace.
3-216 Adjustments
