Chapter 3 Specifications
Measurement Specifications (Continued)
Operating Guide
3-9
3
Time Interval
Measurement is specified over the full signal ranges
7
of Channels 1 and 2.
Results Range:
–1 ns to 10
5
s
LSD:
RMS Resolution:
t
res
Systematic Uncertainty: ±(Time Base Error
×
TI) ± Trigger Level Timing Error ± 1.5 ns Differential Channel Error (HP 53131A)
± 900 ps Differential Channel Error (HP 53132A)
Time Interval Delay
After a Time Interval Measurement has begun by satisfying the trigger conditions on Channel 1, the instrument will wait for the
user-entered delay time to elapse before the end-of-measurement trigger will be accepted on Channel 2. Please refer to Measurement
Arming for additional information.
Frequency Ratio:
Measurement is specified over the full signal range of each input.
Results Range:
10
–10
to 10
11
‘Auto’ Gate Time:
100 ms (or sufficient cycles on Channel 2 or 3 to make a valid measurement, whichever is longer)
LSD:
RMS Resolution:
To minimize relative phase measurement error, connect the higher frequency signal to Channel 1 when possible.
7
See Specifications for Pulse Width and Rise/Fall Time measurements for additional restrictions on signal timing characteristics.
Measurement Specifications (Continued)
53131A 53132A
500 ps 150 ps
--------------------------------------------------------------------------------------------
t
re s
2
Start Trigger Error
2
Stop Trigger Error
2
+
+
53131A 53132A
750 ps 300 ps
--------------------------------------------------------------------------------------------
Ch1
Ch2
⁄
Ch1
Ch3
⁄
Ch2
Ch1
⁄
Ch3
Ch1
⁄
Ratio 12
⁄
:
1
Ch2 Freq
Gate Time
×
-----------------------------------------------------------
Ratio 13
⁄
:
1
Ch3 Freq
Gate Time
×
-----------------------------------------------------------
Ratio 21
⁄
:
Ch2 Freq
Ch1 Freq
(
)
2
Gate Time
×
------------------------------------------------------------------
Ratio 31
⁄
:
Ch3 Freq
Ch1 Freq
(
)
2
Gate Time
×
------------------------------------------------------------------
Ratio 12
⁄
:
2
1
Ch1 Freq
Ch2 Trigger Error
×
(
)
2
+
×
Ch2 Freq
Gate Time
×
-------------------------------------------------------------------------------------------------------------
Ratio 13
⁄
:
2
1
Ch1 Freq
Ch3 Trigger Error
×
(
)
2
+
×
Ch3 Freq
Gate Time
×
-------------------------------------------------------------------------------------------------------------
Ratio 21
⁄
:
2
Ch2 Freq
1
Ch1 Freq
Ch2 Trigger Error
×
(
)
2
+
×
×
Ch1 Freq
(
)
2
Gate Time
×
--------------------------------------------------------------------------------------------------------------------------------------------
Ratio 31
⁄
:
2
Ch3 Freq
×
1
Ch1 Freq
Ch3 Trigger Error
×
(
)
2
+
×
Ch1 Freq
(
)
2
Gate Time
×
--------------------------------------------------------------------------------------------------------------------------------------------
Summary of Contents for 53131A
Page 1: ...Operating Guide HP 53131A 132A 225 MHz Universal Counter ...
Page 2: ......
Page 26: ...xxiv Operating Guide ...
Page 41: ...1 Getting Started ...
Page 77: ...2 Operating Your Universal Counter Operator s Reference ...
Page 171: ...3 Specifications ...
Page 196: ... Manual Part Number 53131 90055 Printed in U S A MAY 1999 ...