Tektronix 2215A User Manual

Adjustment Procedure—2215A Service
Table 5-6
Settings for Timing Accuracy Checks
SEC/DIV
Switch Setting
Time-Mark Generator Setting
Normal
X10 Magnified
0.05 ns 50 ns
10 ns
0.1 us
0.1 MS
10 ns
0.2 ms 0.2 ms
20 ns
0.5 ms
0.5 m s
50 ns
1 MS
1 m s 0.1 M s
2 MS
2 MS
0.2 ms
5 m s
5 ms
0.5 ms
1 0 /IS
10 MS 1 MS
20 ms 20 ms
2 MS
50 ms 50 ms 5 ms
0.1 ms
0.1 ms 1 0 m s
0.2 ms
0.2 ms 20 ms
0.5 ms
0.5 ms
50 m s
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
NOTE
For checking the timing accuracy o f the A SEC/DIV
switch settings from 50 ms to 0.5 s, watch the time
marker tips only at the 2nd and 10th vertical graticule
lines while adjusting the Horizontal POSITION control.
f. Repeat parts c through e for the remaining A SEC/DIV
and time-mark generator setting combinations shown in Ta
ble 5-6 under the" Normal" column.
g. Set the X I0 Magnifier to On (knob out).
h. Select 50-ms time markers from the time-mark gen
erator when checking the A Sweep and 5-ms time markers
when checking the B Sweep.
i. Use the Horizontal POSITION control to align the first
time marker that is 25 ns beyond the start of the sweep with
the second vertical graticule line.
j. CHECK—Timing accuracy is within 4% (0.32 division
at the 10th vertical graticule line), and linearity is within 7%
(0.14 division over any 2 of the center 8 divisions). Exclude
any portion of the sweep past the 100th magnified division.
k. Repeat parts i and j for the remaining A SEC/DIV and
time-mark generator setting combinations shown in Table
5-6 under the “X I0 Magnified" column.
I. Set:
HORIZONTAL MODE B
A SEC/DIV 0.1 fiS
B SEC/DIV 0.05 nS
X I0 Magnifier 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.
10. Check Delay Time Dial Range and Accuracy
a. Set:
Channel 1 Input Coupling GND
HORIZONTAL MODE ALT
A and B SEC/DIV 0.2 ms
X I0 Magnfier Off (knob in)
B DELAY TIME POSITION Fully counterclockwise
A TRIGGER Mode P-P AUTO
b. Align the start of the A Sweep with the 1st vertical
graticule line using the Horizontal POSITION control.
c. CHECK— Intensified portion of the trace starts within
0.5 division of the start of the sweep.
d. Rotate the B DELAY TIME POSITION control fully
clockwise.
e. CHECK— Intensified portion of the trace is past the
11 th vertical graticule line.
f. Set:
A and B SEC/DIV 0.5 ms
B DELAY TIME POSITION Fully counterclockwise
5-16

Tektronix 2215A Specifications

General

Brand	Tektronix
Model	2215A
Category	Test Equipment
Language	English