Tektronix 2230 Service Manual

Performance Check Procedure—2230 Service
Table 4-5
I. Set:
Settings for Timing Accuracy Checks
SEC/DIV
Switch
Setting
Time-Mark Generator Setting
Normal (XI)
X10 Magnified
0.05 fts
50 ns 10 ns
0.1 ms
0.1 fiS 10 ns
0.2 ns
0.2 mS
20 ns
0.5 ps
0.5 ms
50 ns
1 liS
1 mS
0.1 ms
2 ns
2 MS
0.2 ms
5 its
5 ms
0.5 ms
10 ^
10 MS
1 ms
20 ms
20 ms
2 ms
50 ms
50 m$ 5 ms
0.1 ms
0.1 ms
10 ms
0.2 ms
0.2 ms
20 ms
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
HORIZONTAL MODE
A SEC/DIV
B SEC/DIV
XI0 Magnifier
B
0.1 ns
0.05 /is
Off (knob in)
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.
2. Check Store Differential and Cursor Time
Difference Accuracy
a. Set:
Channel 1 AC-GND-DC
HORIZONTAL MODE
A SEC/DIV
XI0 Magnifier
STORE/NON STORE
1K/4K
GND
A
0.1 ms /
Off (knob in)
STORE (button in)
1K (button in)
b. Use the Channel 1 POSITION control to center the
base line vertically and the Horizontal POSITION control to
align the start of the trace with the 1st vertical graticule
line.
c. Use the CURSORS control and SELECT C1/C2
switch to set one cursor exactly on the 2nd vertical grati
cule line and position the active cursor to the right using
the CURSORS control until AT readout displays 0.800 ms.
d. CHECK—Graticule indication of cursor difference at
the 10th vertical graticule line is within 0.16 division.
h. Select 10 ns time markers from the time-mark
generator. 1
e. Set the Channel 1 AC-GND-DC switch to DC.
i. Use the Horizontal POSITION control to align the 1st
time marker that is 25 ns beyond the start of the sweep
with the 2nd vertical graticule line.
j. CHECK—Timing accuracy is within 3% (0.24 division
at the 10th vertical graticule line), and linearity is within 5%
(0.1 division over any 2 of the center 8 divisions). Exclude
any portion of the sweep past the 100th magnified
division.
f. Select 0.1 ms time markers from the time-mark gen
erator.
g. Align the 2nd time marker with the 2nd vertical grati
cule line using the Horizontal POSITION control.
h. Set the SAVE/CONTINUE switch to SAVE (button
in) for a stable display.
k. Repeat parts i and j for the remaining A SEC/DIV
and time-mark generator setting combinations shown in
Table 4-5 under the "X I0 Magnified" column.
i. Use the CURSORS control and SELECT C1/C2
switch to set the first cursor on the trailing edge of the
2nd time marker.
REV DEC 1986
4-13

Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English