p. Press AlB TRIG to select the B Trigger System and
set SLOPE to + (positive).
o. Set the A Trigger Level Readout for a reading of
0.0 V and set SLOPE to + (positive).
n. VERIFY-That for settings less (more negative) than
approximately 200 mV the display is not triggered
(free-runs).
m. VERIFY-That for Trigger Level settings between
approximately 0 mV and -200 mV, the display is stably
triggered and the Trigger Indicator moves along the lower
negative-going slope of the waveform.
I.
VERIFY-That for Trigger Level Readout settings of
approximately ~ 0 V, the display is stably triggered with
the Trigger indicator approximately centered vertically on
the waveform.
k.
Press AlB TRIG to select the A Trigger System and
set SLOPE to - (negative).
j. VERIFY-That for settings greater (more positive)
than approximately 200 mV the display is not triggered
(free-runs). Press AlB TRIG to select the B Trigger System
and set SLOPE to - (negative).
i. VERIFY-That for Trigger Level settings between
approximately 0 V and 200 mV the display is stably trig-
gered and the Trigger Indicator moves along the upper
positive-going slope of the waveform.
h. VERIFY-That for Trigger Level Readout settings of
approximately ~ 0 V the display is stably triggered with
the Trigger indicator (a small
"T")
approximately centered
vertically on the waveform.
g. Use the TRIGGER LEVEL control to adjust the A
Trigger Level Readout while performing parts h through n.
f. Set the generator frequency to 50 kHz and its ampli-
tude for a 4 division display.
e. Connect the output of a Leveled Sine-Wave Genera-
tor through a 50 n cable and a Dual-Input Coupler to the
CH 1 and CH 2 input connectors. Do not use a terminator.
d. Select VERTICAL MODE and set CH 2 off.
4-20
c. Press the AlB TRIG button to select the A Trigger
System.
b. Ensure that the B Trigger Level Readout is set to
0.0 V. Adjust if necessary using the TRIGGER LEVEL
control.
Press A/B TRIG to display the B TRIG SOURCE menu
Set: CHAN 1:2 2
Select TRIGGER SOURCE
Set: A*B:WORD
On
Select TRIGGER MODE
Set: AUTO
10,usA SEC/DIV
Set:
3. Check A
*
B Trigger Source.
a. Recall the Initial Front Panel Setting by performing
the following sequence: Select SAVE/RECALL SETUP,
press the menu button labeled RECALL (menu will
change), and then press the menu button labeled 1. Make
the following changes to the front panel setup:
y. Disconnect the test setup.
When checking 50 MHz and 150 MHz Triggers for
the
8
Trigger System, the REPET mode acquisitions
can require a long time to complete. When setting
the
8
SEC/DIV control for those Test Frequencies,
set the HORIZONTAL MODE to A and set the A
SEC/DIV control to the SEC/DIV setting specified in
the table. This adjustment will set 80TH A and 8
Acquisition Systems to the specified SEC/DIV set-
ting and reduce the time necessary to complete the
8 REPT acquisition sequence. Set the HORIZON-
TAL MODE back to 8.
NOTE
x. Repeat parts b to u to check B Trigger System sen-
sitivity. Use generator amplitude levels in the Trigger
System-B rows for checking the B Trigger sensitivity.
w. Press A/B TRIG to select the B Trigger System and
set the HORIZONTAL MODE to B.
v. Select TRIGGER SOURCE and set VERT on (the
VERT source will ensure that the A Acquisition System is
stably triggered-required for the following B Trigger
checks).
Performance Check and Functional Verification Procedure
2430 Service
To Next Page
Loading...
Need help?
General
