Chapter 3 Specifications
Measurement Specifications (Continued)
3-10 Operating Guide
3
Pulse Width
Measurement is specified over the full signal range of Channel 1. The width of the opposing pulse must be greater than 4 ns (e.g., when
measuring the positive pulse width, the negative pulse width must be greater than 4 ns).
Pulse Selection: Positive or Negative
Trigger: Default setting is Auto Trigger
8
at 50%
Results Range: 5 ns to 10
5
s
LSD:
RMS Resolution:
t
res
Systematic Uncertainty:
± (Time Base Error × Pulse Width) ± Trigger Level Timing Error ±1.5 ns Differential Channel Error (HP 53131A)
± 900 ps Differential Channel Error (HP 53132A)
Rise/Fall Time
Measurement is specified over the full signal ranges of Channel 1. The interval between the end of one edge and start of a similar edge
must be greater than 4 ns. (e.g., when measuring a rising edge, 4 ns must elapse between the 90% point of one rising edge and the
10% point of the next rising edge).
Edge Selection: Positive or Negative
Trigger: Default setting is Auto Trigger
8
at 10% and 90%
Results Range: 5 ns to 10
5
s
LSD:
RMS Resolution:
t
res
Systematic Uncertainty:
± (Time Base Error × Transition Time) ± Trigger Level Timing Error ±1.5 ns Differential Channel Error (HP 53131A)
± 900 ps Differential Channel Error (HP 53132A)
Phase
Measurement is specified over the full signal range of Channels 1 and 2.
Results Range: –180° to +360°
RMS Resolution:
t
res
Systematic Uncertainty: (± Trigger Level Timing Error ± 1.5 ns Differential Channel Error) × Frequency (HP 53131A)
(± Trigger Level Timing Error ± 900 ps Differential Channel Error) × Frequency (HP 53132A)
8
Restrictions noted on page 3-2 for Auto Trigger apply to the proper operation of these measurements. The Peak Volts measurement is used to
determine the signal amplitude and inaccuracies from this, noted on page 3-11, should be included in calculating the Trigger Level Timing Error.
Measurement Specifications (Continued)
53131A 53132A
500 ps 150 ps
--------------------------------------------------------------------------------------------
t
res
2
Start Trigger Error
2
Stop Trigger Error
2
++
53131A 53132A
750 ps 300 ps
--------------------------------------------------------------------------------------------
53131A 53132A
500 ps 150 ps
--------------------------------------------------------------------------------------------
t
res
2
Start Trigger Error
2
Stop Trigger Error
2
++
53131A 53132A
750 ps 300 ps
--------------------------------------------------------------------------------------------
t
res
2
2 Trigger Error
2
×()+()
1
Phase
360
°
-----------------
2
+
×
Frequency 360
°××
53131A 53132A
750 ps 300 ps
--------------------------------------------------------------------------------------------
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