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9. Press TRACEITRIG
and adjust the trigger Level for a stable display
(Auto-triggered
message does not appear on screen). The test passes if
triggering is stable, as shown in figure 3-65.
10.
11.
12.
13.
14.
15.
16.
17.
18.
-Scope-
Hevef arms
tlarker
s [
Off
]
Display
1 Normal
]
Connect
dotsll
Sample
perlod
-
10.0
ns
s/Dlv
pXKF]
Delay
I
Gfld
I
w
r
:
ICH1&
:
;
.
I
;
;
:
:
:
:
.
: :
.
.
,..................._....,.........I...
. . . . ..s....
:
.
.
.
:
.
:
.
.
.
.
.
.
.
.
:
.
.
:
.
.
. . . . . .
. . . . . . . . .
: . . . . _ . .
. .
. .
. . _ . . .
:
:
.
:
:
.
:
.
.
t
1
,
f
1
1
1
1
I
1
.
Figure 3-65. Waveforms
Display Menu
Press STOP and set the s/Div to 5 ns.
Set the signal generator to 100 MHz and.press RUN on the HP 1652B/1653B.
Adjust the signal generator output level for 0.4 divisions of vertical deflection
(approximately
+ 3 dBm).
Press TRACE/TRIG
and adjust the trigger level for a stable display
(Auto-triggered
message does not appear on screen). The test passes if
triggering is stable.
Press FORMATKHAN
and set V/Div to 200 mV and repeat steps 4 through
13. The signal generator output should be reduced to approximately
-17
dBm.
Press FORMATKHAN
and set V/Div to 20 mV and repeat steps 4 through
13. The signal generator output should be set to approximately
-37 dBm.
Turn on channel 2 by inserting a waveform on the display.
Turn off channel 1 by deleting the channel 1 waveform.
Connect the signal generator to channel 2 and repeat steps 4 through 15 for
channel 2.
Note
d I s
Trigger sensitivity test failure is caused by a defective attenuator or oscilloscope
3
assembly.
HP 1652B/16538
Performance
Tests
Service Manual
3-53
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