Tektronix T912 - Page 33

Performance
Check—
T912
13. Sweep Rate Accuracy
Table
3-3
NORMAL SWEEP TIMING ACCURACY
a. Connect test setup as shown
in Fig.
3-4.
CH
1 VOLTS/DIV .2 V
SOURCE INT
MODE NORM
X1-X10
XI
(fully ccw)
SLOPE
As
needed
LEVEL As needed
POSITION
(all)
As needed
c. CHECK—SEC/DIV accuracy according toTable3-3:
one or two time marks, as indicated, within
3%
(0.24
div)
over
center eight divisions. Accuracy specifications
apply
for
a
temperature range
of
+20° C
to
+30° C.
SEC/DIV
Time-Mark CRT Display
Switch
Setting Generator Output (Marker/Division)
.5
/js 0.5 microsecond 1
1
fJS
1 microsecond 1
2
fjis
1 microsecond 2
5
jjs
5 microseconds 1
10
/iS 10
microseconds
1
20
/US
10
microseconds 2
50
(js 50 microseconds 1
,1 ms 0.1
millisecond
1
.2
ms
0,1
millisecond 2
.5 ms
0,5
millisecond 1
1
ms
1 millisecond 1
2 ms 1 millisecond 2
5 ms 5 milliseconds 1
10
ms
10 milliseconds 1
20 ms 10 milliseconds 2
50
ms
50 milliseconds 1
.1 s 0.1 second 1
.2
s
0.1 second 2
.5 s 0.5 second 1
OSCILLOSCOPE
Fig.
3-4,
Timing
accuracy
and writing rate check test setup.
REV. A APR 1977
3-7