7

Chapter 7 HP 53131A/132A Specifications

Measurement Arming and Processing

Measurement Arming and Processing

Gate Time

 

Measurement Throughput

Auto Mode, or 1 ms to 1000 s

 

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.

7-14

Assembly-Level Service Guide