HP 53132A Assembly And Service Manual page 239

Measurement Specifications
Frequency, Period
Channel 1 Range: 0.1 Hz to 225 MHz
Channel 2 Range:
Option 015 100 Mhz to 1.5 Ghz
Option 030 100 MHz to 3 GHz
Option 050 200 MHz to 5 GHz
Option 124 200 MHz to 12.4 GHz
(Period 2 selectable only via the HP-IB interface)
For Automatic or External Arming:
(and signals < 100 Hz using Timed Arming)
LSD Displayed:
Frequency
t
 
res ×
--------------------------- -
or
 
Gate Time
Period
RMS Resolution:
2 2
 ( ×
t 2 Trigger Error
+
res

--------------------------------------------------------------------- -
 Gate Time
5
t : 650 ps typical
res
For Automatic Arming:
Gate Time
where N = 1 for Ch1 Frequency < 1 MHz
4 for Ch1 Frequency > 1 MHz
128 for Ch2

±
Systematic Uncertainty:
Time Base Error

t : 350 ps typical
acc
1.25 ns worst case
Trigger: Default setting is Auto Trigger at 50%
The following graphs may also be used to compute errors for Period Measurements. To find the Period error (∆P), calculate the frequency of the
1
input signal ( ) and find the frequency error (∆F) from the chart. Then, calculate the period error as:
F --- -
=
P
.
Chapter 8 HP 53181A Specifications
Measurement Specifications
4.44 ns to 10 s
0.67 ns to 10 ns
0.33 ns to 10 ns
0.2 ns to 5 ns
80 ps to 5 ns
Frequency
) 
 ×
or

Period
N
--------------------------- -
=
Frequency
Frequency
t

± a cc ×
----------------------
or

Gate Time
Period
Assembly-Level Service Guide
For Time or Digits Arming:
LSD Displayed:

×
2 2 t
re s

-------------------------------------------------------------------------------------------
×

Gate Time Number or Samples
RMS Resolution:
2
 × ( ×
4 t + 2 Trigger Error
 res
-------------------------------------------------------------------------------------------
 ×
Gate Time Number or Samples
5
t : 500 ps typical
res
5
t : 50 ps typical
jitter
Number of Samples =
Gate Time x Frequency
Gate Time x 200,000

±
Systematic Uncertainty:
Time Base Error

t : 100 ps typical
acc
300 ps worst case
Trigger: Default setting is Auto Trigger at 50%
∆
 Frequency
t
jitter ×

--------------------------- -
+ or
Gate Time 
Period
2 Frequency
) 
t
jitter  ×
--------------------------- - or
+
Gate Time 
Period
(Frequency < 200 kHz)
(Frequency > 200 kHz)
Frequency
t

± a cc ×
----------------------
or

Gate Time
Period
∆
 F 
×
P ------ - P
=
 
F
8-5