Tektronix 2430 Service Manual

4-21
6. Check Slope Selection and Verify Line Trigger.
a. Recall the Initial Front Panel Setting by performing
the following sequence: Select SAVE/RECALL SETUP,
press the menu button labeled RECALL (menu will
k. Set the B COUPLING menu to DC on and discon-
nect the test setup.
j. CHECK-That the display cannot be stably triggered
with the TRIGGER LEVEL control for either positive or
negative setting of the SLOPE button.
i. Set the B COUPLING menu to NOISE REJECT on.
h. Press the A/B TRIG button to select the B Trigger
System (the B COUPLING menu will be displayed) and set
the HORIZONTAL MODE to B.
g. Set the A COUPLING menu back to DC on.
f. CHECK-For a non-triggered, free-running display
for both the + (positive) and - (negative) settings of the
SLOPE button.
e. Select TRIGGER COUPLING and set NOISE
REJECT on.
d. Change CH 1 VOLTS/DIV to 1 V (yields a 0.4 divi-
sion display).
c. Set the generator frequency to 50 kHz and its ampli-
tude for a 4 division display.
b. Connect the sine wave output of the Function Gen-
erator through a 50 Q cable and a 50 Q terminator to the
CH 1 input connector.
10 J.lS
A SEC/DIVSet:
Select VERTICAL MODE
Set: CH 2 Off
5. Check Trigger Noise Rejection.
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:
Performance Check and Functional Verification Procedure
2430 Service
i. Disconnect the test setup.
h. VERIFY-That for each press of the STORAGE
ACQUIRE button, a waveform is acquired and saved on
screen.
g. Trigger the display and set SINGLE SEQUENCE on.
f. VERIFY-That for TRIGGER LEVEL settings outside
the range of the display (approximately ± 200 mV), the
acquisition stops and the waveform is saved on screen.
e. Using the TRIGGER LEVEL control, VERIFY that
the display can be triggered on the positive-going slope of
the ac waveform for the + (plus) selection of the SLOPE
button and on the negative-going slope for the - (minus)
selection of the SLOPE button.
d. Select TRIGGER MODE and set NORMAL on.
c. Set the generator frequency and amplitude for a
50 kHz, 4 division display.
b. Connect the Leveled Sine-Wave Generator output to
CH 1 input through a 50 Q cable.
10 J.ls
A SEC/DIVSet:
Off
Select VERTICAL MODE
Set: CH 2
4. Verify the Normal and Single Sequence Trigger
Functions.
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:
r. Disconnect the test setup.
q. Repeat parts h through 0 to verify the B Trigger
System as a source for the A·B composite trigger. Do
NOT change the HORIZONTAL MODE to B. Note that the
Trigger Level Readout will indicate B Trigger Level settings
for parts h through 0 and that performance of part j will
select the A Trigger System, while part k will select the B
Trigger System.

Tektronix 2430 Specifications

General

Brand	Tektronix
Model	2430
Category	Test Equipment
Language	English