53131A/ABA Agilent Technologies Test Equipment, 53131A/ABA Datasheet - Page 9

• Manufacturer Part Number: 53131A/ABA
• Description: COUNTER, 225 MHZ UNIVERSAL COUNTER 10 DIGITS/S
• Manufacturer: Agilent Technologies Test Equipment

Graph 1:
Agilent 53131A/181A–Worst Case
RMS Resolution
(Automatic or External Arming)
The graphs may also be used to compute errors
for Period Measurements. To find the Period error
(DP), calculate the frequency of the input signal
(F = 1/P) and find the frequency error (DF) from
the chart.
Then calculate the period error as:
Graph 2:
Agilent 53131A/181A–Worst Case
RMS Resolution
(Time or Digits Arming)
Graph 3:
Timebase Error
7. Graphs 1, 2, 4 and 5 do not reflect the effects of
trigger error. To place an upper bound on the added
effect of this error term, determine the frequency
error from the appropriate graph and add a trigger
error term as follows:
Time or Digit Arming
Automatic or External Arming
Frequency Error +
Frequency Error +
∆
P
=
∆
F
F
Gate Time
7
7
2
Gate Time
4
Trigger Error
P
2
Number of Samples
Trigger Error
Frequency
Period
or
Frequency
Period
or
100 mHz
1E + 02
1E + 00
100 µHz
100 nHz
1E – 02
1E – 04
1E – 06
1E – 08
1E – 10
1E + 00
1E – 02
1E – 04
1E – 06
1E – 08
1E – 10
10 mHz
100 Hz
10 µHz
10 nHz
E + 02
10 kHz
1 mHz
10 Hz
1 µHz
1 kHz
1 Hz
1 Hz
1 ns
10
10
9
10 Hz
10 ns
100
100
High Stability T.B.
10 years after cal
100 Hz
100 ns
Auto Armed
1000
1000
High Stability T.B.
1 month after cal
1 kHz
1 µs
10000
10000
Medium T.B.
1 year after cal
Input Signal Frequency or Time
Input Frequency (Hz)
Input Frequency (Hz)
10 s
10 s
10 kHz 100 kHz
10 µs
1E + 05 1E + 06
1E + 05 1E + 06
Standard T.B.
1 year after cal
1 s
100 µs
High Stability T.B.
1 year after cal
Ultra Stability T.B.
1 year after cal
1 s
100 ms
1 MHz
100 ms
1 ms
1E + 07
1E + 07
10 MHz 100 MHz
10 ms
10 ms
10 ms
Medium T.B.
1 month after cal
Standard T.B.
1 month after cal
1E + 08
1E + 08
100 ms
1 ms
Gate
Time
1 ms
Gate
Time
1E + 09
1E + 09
1 GHz
1 sec
1E + 10
1E + 10
10 µs
1 µs
100 ns
10 ns
1 ns
100 ps
10 ps
1 ps
100 fs
10 fs
1 fs
100 as
10 as