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Chapter 7 HP 53131A/132A Specifications
Measurement Arming and Processing
7-14 Assembly-Level Service Guide
7
Measurement Arming and Processing
Gate Time
Auto Mode, or 1 ms to 1000 s
Measurement Throughput
HP-IB ASCII: 200 Measurements/s (maximum)
(See examples in the Programming Guide for ways to optimize
measurement throughput)
Measurement Arming
Start Measurement: Free Run, Manual, or External
Stop Measurement: Continuous, Single, External, or Timed
Arming Modes:
(Note that not all arming modes are available for every measurement function.)
Auto Arming: Measurements are initiated immediately and acquired as fast as possible, using a minimum number of signal
edges. Auto arming offers the highest measurement throughput, though measurement resolution may be
reduced.
Timed Arming: The duration of the measurement is internally timed to a user-specified value (also known as the “gate time”).
This mode should be used when the length of the measurement time must be controlled.
Digits Arming: Measurements are performed to the requested resolution (number of digits) through automatic selection of the
acquisition time. This is the most convenient mode for when a specific measurement resolution is desired.
External Arming: An edge on the External Arm Input enables the start of each measurement. Depending on the measurement
function, Auto Arming, Timed arming modes or another edge on the External Arm Input may be used to complete
the measurement.
Time Interval
Arming Modes: HP 53131A
Time Interval Stop Delay Arming: The Stop Measurement condition on Channel 2 is inhibited (trigger hold-off) for
a user specified time following the Start Measurement on Channel 1.
Time Interval Delay Range: 100 µs to 10 s*
Time Interval Delay Resolution: 10 µs from 100 µs to 100 ms
1 ms from 100 ms to 10 s
HP 53132A
Time Interval Start Delay Arming: The start of a Time Interval measurement is delayed for a user-specified
amount of time, or number of Channel 2 events, from the Start External Arming edge.
Start Delay TimeRange: 100 ns to 999.9999 ms
Start Delay Time Resolution: 100 ns
Start Delay Event Range: 1 to 99,999,999 Channel 2 events
Start Delay Event Rate: 5 MHz maximum
Start Delay Event Setup Time: 30 ns minimum
Time Interval Stop Delay Arming: The Stop Measurement condition on Channel 2 is inhibited (trigger hold-off) for
a user-specified amount of time, or number of Channel 2 stop events, following the Start Measurement on
Channel 1, or, if enabled, the Stop External Arming edge.
Stop Delay Time Range: 100 ns to 10 s**
Stop Delay Time Resolution: 100 ns from 100 ns to 1 s
1 ms from 1 s to 10 s
Stop Delay Event Range: 1 to 99,999,999 Channel 2 events
Stop Delay Event Rate: 5 MHz maximum
Stop Delay Event Setup Time: 30 ns minimum
* For firmware revisions below 3427 the valid range of delay is 1 ms to 10 s.
** For firmware revisions below 3646 the valid range of delay is 1 ms to 10 s.