Agilent Technologies 53181A - Page 154

Chapter 3 Specifications
Introduction
3-12 Operating Guide
Measurement Specifications (Continued)
Worst Case RMS Resolution
Automatic or External Arming:
Time or Digit Arming:
The preceding graphs 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:
Automatic or External Arming Time or Digit Arming
10 100 1000 10000 100000 1000000 1E+07 1E+08 1E+09 1E+1
0
Input Frequency (Hz)
1E-10
1E-8
1E-6
1E-4
1E-2
1E+00
1E+02
Frequency Error (Hz)
Auto Armed
1ms
1s
10s
Gate
Time
10ms
100ms
10 100 1000 10000 100000 1000000 1E+07 1E+08 1E+09 1E+1
0
Input Frequency
1E-10
1E-8
1E-6
1E-4
1E-2
1E+00
1E+02
Frequency Error (Hz)
1ms
Gate
Time
10ms
100ms
1s
10s
F
requency Error
2 Trigger Error×
Gate Time
------------------------------------------------


+
Frequen
cy
or
Period
×
Frequency Error
42× Trigger Error×
Gate Time Number of Samples×
--------------------------------------------------------------------------------------------


+
Frequenc
y
or
Period
×