Chapter 8 HP 53181A Specifications
Measurement Specifications
Assembly-Level Service Guide 8-5
8
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 Range: 0.1 Hz to 225 MHz 4.44 ns to 10 s
Channel 2 Range:
Option 015 100 Mhz to 1.5 Ghz 0.67 ns to 10 ns
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 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:
t
res
: 650 ps typical
5
For Automatic Arming:
where N = 1 for Ch1 Frequency < 1 MHz
4 for Ch1 Frequency > 1 MHz
128 for Ch2
LSD Displayed:
RMS Resolution:
t
res
: 500 ps typical
5
t
jitter
: 50 ps typical
5
Number of Samples =
Gate Time x Frequency (Frequency < 200 kHz)
Gate Time x 200,000 (Frequency > 200 kHz)
Systematic Uncertainty:
t
acc
: 350 ps typical
1.25 ns worst case
Trigger: Default setting is Auto Trigger at 50%
Systematic Uncertainty:
t
acc
: 100 ps typical
300 ps worst case
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
----------------------------
=
22 t
res
×
Gate Time Number or Samples
×
-------------------------------------------------------------------------------------------
t
jitter
Gate Time
----------------------------
+
Frequency
or
Period
×
4t
res
2
2 Trigger Error
2
×()+×
Gate Time Number or Samples
×
-------------------------------------------------------------------------------------------
t
jitter
Gate Time
----------------------------
+
Frequency
or
Period
×
Time Base Error
±
t
acc
Gate Time
----------------------
±
Frequency
or
Period
×
Time Base Error
±
t
acc
Gate Time
----------------------
±
Frequency
or
Period
×
F
1
P
----
=
P
∆
F
∆
F
-------
P
×=
