Tektronix 2230 Service Manual

Table 5-7
Settings for Timing Accuracy Checks
SEC/DIV
Switch
Setting
Time-Mark Generator Setting
Normal (XI)
X I0 Magnified
0.05 ns
50 ns 10 ns
0.1 MS
0.1 ms
10 ns
0.2 ms
0.2 ms
20 ns
0.5 ms
0.5 ms
50 ns
1 MS
1 ms
0.1 ms
2 MS 2 ms
0 .2 ms
5 ms 5 MS 0.5 ms
10 ms
10 ms 1 MS
2 0 ms 20 ms 2 MS
50 ms 50 ms
5 ms
0.1 ms
0.1 -ms
10 ms
0.2 ms 0.2 ms 20 fis
0.5 ms 0.5 ms
50 mS
1 ms 1 ms
0.1 ms
2 ms 2 ms
0.2 ms
5 ms
5 ms
0.5 ms
10 ms 10 ms
1 ms
20 ms
20 ms
2 ms
50 ms
50 ms
5 ms
A Sweep Only
0.1 s
0.1 s
10 ms
0.2 s 0.2 s 20 ms
0.5 s 0.5 s
50 ms
m. Repeat parts b through k for the B Sweep. Keep
the A SEC/DIV switch one setting slower than the B
SEC/DIV switch.
Adjustment Procedure—2230 Service
b. Use the Horizontal POSITION control to align the
start of the A Sweep with the 1 st vertical graticule line.
c. Set the B DELAY TIME POSITION control fully
counterclockwise.
d. CHECK—Intensified portion of the trace starts
within 0.5 division of the start of the sweep.
e. Rotate the B DELAY TIME POSITION control fully
clockwise.
f. CHECK—Intensified portion of the trace is past the
11 th vertical graticule line.
g. Set the A and B SEC/DIV switch to 0.5 ms.
h. Repeat parts b through f.
i. Set:
Channel 1 AC-GND-DC DC
B SEC/DIV 0.05 fis
B DELAY TIME POSITION Fully counterclockwise
j. Select 0.5 ms time markers from the time-mark
generator.
k. Rotate the B DELAY TIME POSITION control so
that the top of the 2nd time marker on the B Sweep is
aligned with a selected reference vertical line. Record the
DLY> readout for part m.
I. Rotate the B DELAY TIME POSITION control fully
clockwise until the top of the 10th time marker on the B
Sweep is aligned with the same selected reference vertical
line as in part k. Record the DLY> readout for part m.
12. Check Delay Time Differential Accuracy
a. Set:
m. CHECK—Delay time readout is within the limits
given in Table 5-8 (Delay Readout Limits column) by sub
tracting the delay time reading in part k from part I.
Channel 1 AC-GND-DC GND
HORIZONTAL MODE BOTH
A and B SEC/DIV 0.2 ms
XI0 Magnifier Off (knob in)
A TRIGGER MODE P-P AUTO
n. Repeat parts k through m for the remaining B
SEC/DIV and time-mark generator settings given in Table
5-8, check the 8-division delay time accuracy for each A
SEC/DIV switch setting given in column 1 of the table.
5-23

Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English