Horizontal System - Tektronix 2432 Service Manual

Performance Check and Functional Verification Procedure
2432 Service
HORIZONTAL SYSTEM
EQUIPMENT REQUIRED (see Table 4-1)
Time-Mark Generator (Item 4)
Coaxial Cable (Item 10)
Precision Coaxial Cable (Item 11)
1. Verify the Sample Rate of the A and B
Acquisition Systems.
a. Recall the Initial Front-Panel Setup, labeled "FPNL"
(see step i in "INITIAL SETUP" at the start of this pro-
cedure). Make the following changes to the front-panel
setup:
Select: VERTICAL MODE
Set: CH2
Set:
CH1 VOLTS/DIV
A SEC/DIV
A/8 TRIG
Off
1V
500ns
8
b. Select TRIGGER MODE and set RUNS AFTER on.
Set A/8 TRIG to A.
c. Connect the MARKER OUT signal of a Time Mark
Generator to the CH1 input through a 50-ll cable. Do not
use a terminator.
d. Set the generator's marker period to .5 µs.
e. VERIFY-That one time marker per horizontal divi-
sion is displayed.
f. Set HORIZONTAL MODE to 8 and set the 8
SEC/DIV control to 500 ns.
g. VERIFY-That one marker per horizontal division
is displayed.
4-26
Termination (Item 12)
10X Probe (Item 16)
1 X Probe (Item 17)
h. Rotate the A and B SEC/DIV control counter-
clockwise one position to set both acquisition systems one
speed slower.
i. Set the generator's marker period to match the
acquisition rate set in the last part.
j. VERIFY-That one marker per horizontal graticule
line is displayed.
k. Set HORIZONTAL MODE to A.
I. VERIFY-That one marker per horizontal division
is displayed.
m. Set HORIZONTAL MODE to 8.
n. Repeat parts h through m to verify all A and B
acquisition rate settings down to 500 ms.
o. Disconnect the test setup.
2. Verify the DELAY TIME and .:1 DELAY TIME
Functions and Check DELAY TIME AND
.:1
DELAY
TIME Resolution.
a. Recall the Initial Front-Panel Setup, labeled "FPNL"
(see step i in "INITIAL SETUP" at the start of this pro-
cedure). Make the following changes to the front-panel
setup:
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