HP 53131A, Operating Manual

Page: 175 / 196

Chapter 3 Specifications
Measurement Specifications
Operating Guide 3-5
3
The following graphs may also be used to compute errors for Period Measurements. To find the Period error (
∆
P), calculate the frequency of the
input signal ( ) and find the frequency error (
∆
F) from the chart. Then, calculate the period error as:
Measurement Specifications
Frequency, Period
Channel 1 and 2 Range: 0.1 Hz to 225 MHz 4.44 ns to 10 s
Channel 3 Range:
Option 030 100 MHz to 3 GHz 0.33 ns to 10 ns
Option 050 200 MHz to 5 GHz 0.2 ns to 5 ns
Option 124 200 MHz to 12.4 GHz 80 ps to 5 ns
(Period 2 or 3 selectable only via the HP-IB interface)
For Automatic or External Arming:
(and signals < 100 Hz using Timed Arming)
For Time or Digits Arming:
LSD Displayed:
RMS Resolution:
HP 53131A HP 53132A
t
res
t
res
typical 650 ps 200 ps
see graphs for worst case resolution performance
For Automatic Arming:
where N = 1 for Ch1 or Ch2 Frequency < 1 MHz
4 for Ch1 or Ch2 Frequency > 1 MHz
128 for Ch3
LSD Displayed:
RMS Resolution:
HP 53131A HP 53132A
t
res
t
jitter
t
res
t
jitter
typical 500 ps 50 ps 225 ps 3 ps
see graphs for worst case resolution performance
Number of Samples =
Gate Time x Frequency (Frequency < 200 kHz)
Gate Time x 200,000 (Frequency > 200 kHz)
Systematic Uncertainty:
HP 53131A HP 53132A
t
acc
t
acc
typical 350 ps 100 ps
worst case 1.25 ns 500 ps
Trigger: Default setting is Auto Trigger at 50%
Systematic Uncertainty:
HP 53131A HP 53132A
t
acc
t
acc
typical 100 ps 10 ps
worst case 300 ps 100 ps
Trigger: Default setting is Auto Trigger at 50%
t
res
Gate Time
----------------------------
 
 
Frequency
or
Period
×
t
res
2
2 Trigger Error
2
× ( )
+
Gate Time
----------------------------------------------------------------------
 
 
 
Frequency
or
Period
×
Gate Time
N
Frequency
----------------------------
=
2 2 t
re s
×
Gate Time Number or Samples
×
-------------------------------------------------------------------------------------------
t
j itter
Gate Time
----------------------------
+
 
 
 
Frequency
or
Period
×
4 t
res
2
2 Trigger Error
2
×
+
×
Gate Time Number or Samples
×
-------------------------------------------------------------------------------------------
t
ji tte r
Gate Time
----------------------------
+
 
 
 
x
Frequency
or
Period
Time Base Error
±
t
a cc
Gate Time
----------------------
±
 
 
Frequency
or
Period
×
Time Base Error
±
t
a cc
Gate Time
----------------------
±
 
 
Frequency
or
Period
×
F
1
P
----
=
P
∆
F
∆
F
-------
 
 
P
×
=