Tektronix DC 501 Instruction Manual page 37

DC501
TEXT CORRECTION
Page 1-3
REPLACE:
Internal Time Base table with
the following:
INTERNAL TIME BASE
Standard Option
1
Crystal Frequency
1
MHz
5
MHz
Stability
at 25°C
after
1/2
hour
warm-up
Stability
(20*C
to
50"C) after 1/2
hour
warm-up
Within
1
part
in 10^
Within
2
parts
in 10^
Within
5
parts
in 10^
Long-term Drift
2
parts
or
less in
10^ per
month
1
part
or less in 10^
per
month
Accuracy Adjustable
to
within
Adjustable
to
within
1
part
in
10^
9
5
parts
in 10
i
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