Tektronix 2247A

Performance Check Procedure
Table 7-4
Delay Time Accuracy
Time Marker Readout Accuracy Limits
Ist ? 0.000 ms
2nd 0.945 ms to 1.055 ms
3rd 1.940 ms to 2.060 ms
4th 2.935 ms to 3.065 ms
Sth 3.930 ms to 4.070 ms
6th 4.925 ms to 5.075 ms
7th 5.920 ms to 6.080 ms
8th 6.915 ms to 7.085 ms
9th 7.910 ms to 8.090 ms
10th 8.905 ms to 9.095 ms
Delay Time Position Range
Set time-mark generator for 0.1 ms.
Set:
A SEC/DIV 1 ms
B SEC/DIV Ss
'© OR DELAY control cew to 70,000
CHECK—that
the
Intensified
dot
Is
positioned
at
or
before
the
second
time
marker,
.
Turn
the
K-
OR
DELAY
control
clockwise
until
the
delay
readout
stops
Increasing
(largest
number).
CHECK—that
the
Intensified
dot
Is
positioned
at
or
after
the
99th
time
marker
(located
at
a
Delay
Time
of
9.9
ms).
Disconnect
the
time-mark
generator
from
the
2247A.
7-44
2247A
Operators
:
x
ar