App-1
IM 253710-01E
Appendix
App
Appendix
Appendix 1 Relationship between the Observation
Time, Sampling Rate, and Record length
The relationship between the observation time, sampling rate, and record length when
the time base is set to internal clock are shown below. When the time base is set to
external clock, the observation time is determined from the record length and the
frequency of the external clock. For example, if the frequency of the external clock is
100 kHz and the record length is 100 k-words, the observation time is approximately 1 s.
For Normal Measurement Mode
When the record length is not divided (When [Rec Division] of the Acq menu is set
to [OFF])
Sampling
Rate
(S/s)
100
250
500
1 k
2.5 k
5 k
10 k
25 k
50 k
100 k
250 k
500 k
1 M
2.5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
Display
Record
Length
(Word)
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
100 k
50 k
20 k
10 k
5 k
2 k
1 k
500
200
100
50
Sampling
Rate
(S/s)
1 k
2.5 k
5 k
10 k
25 k
50 k
100 k
250 k
500 k
1 M
2.5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
Display
Record
Length
(Word)
1 M
1 M
1 M
1 M
1 M
1 M
1 M
1 M
1 M
1 M
1 M
1 M
500 k
200 k
100 k
50 k
20 k
10 k
5 k
2 k
1 k
500
200
100
50
Sampling
Rate
(S/s)
4 k
10 k
20 k
40 k
100 k
200 k
250 k
1 M
1.25 M
2.5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
5 M
Display
Record
Length
(Word)
4 M
4 M
4 M
4 M
4 M
4 M
2.5 M
4 M
2.5 M
2.5 M
2 M
1 M
500 k
200 k
100 k
50 k
20 k
10 k
5 k
2 k
1 k
500
200
100
50
1 ks
400 s
200 s
100 s
40 s
20 s
10 s
4 s
2 s
1 s
400 ms
200 ms
100 ms
40 ms
20 ms
10 ms
4 ms
2 ms
1 ms
400
µ
s
200
µ
s
100
µ
s
40
µ
s
20
µ
s
10
µ
s
100 k
1 M (Option)
Record Length
4 M (Option)
Observation
Time