Atec Agilent-53132A-53131A-53181A - Manual (Page 5)

5
Gate time
t
acc ×
Frequency
or
period
± Time base error ±
Gate time =
Frequency
N
Gate time
t 2
res
(2 +
×
Trigger error) 2
×
Frequency
or
period
Gate time
t
res ×
Frequency
or
period
LSD displayed:
RMS resolution:
Systematic uncertainty:
Trigger: Default setting is auto trigger at 50%
53131A t
res
650 ps typical
see graphs for worst case resolution performance
53132A t
res
200 ps
53181A t
res
650 ps
53131A t
acc
350 ps
1.25 ns
Typical
Worst case
53132A t
acc
100 ps
500 ps
53181A t
acc
350 ps
1.25 ns
For automatic arming:
where N = 1 for standard channel frequency < 1 MHz
4 for standard channel frequency > 1 MHz
128 for optional channel
4
×
t 2
res
+ (2
×
Trigger error 2 )
Gate time
t
acc ×
Frequency
or
period
± Time base error ±
Gate time
t
jitter
Gate time
×
Number of samples
×
Frequency
or
period
LSD displayed:
RMS resolution
(see graph 2):
Systematic uncertainty:
Trigger: Default setting is auto trigger at 50%
t
res
500 ps Typical
See graphs for worst case resolution performance
t
jitter
50 ps
t
jitter
3 ps
t
res
225 ps
53131A/181A
t
acc
100 ps
300 ps
Typical
Worst case
53132A
t
acc
10 ps
100 ps
+
Gate time
t
jitter
Gate time
×
Number of samples
2 2
×
t
res ×
Frequency
or
period
+
53131A/181A 53132A
Number of samples = Gate time
×
Frequency (Frequency < 200 kHz)
Gate time
×
200,000 (Frequency > 200 kHz)
For time or digits arming:
For automatic or external arming:
(and signals < 100 Hz using timed arming)