Subsystem Syntax

overwrite each other multiple times times before the arm event occurs and the current cycle of readings completes with the post-arm readings being taken. After all post-arm readings have been taken in a partition, if ARM:STARt:COUNt is not yet satisfied, the instrument directs the next burst of readings into the next memory partition. There is a time window of typically 630 μs between bursts, where no readings will be taken, while the HP E1429 arranges for readings to be directed into the next memory partition. If an ARM event (ARM:STARt:SOURce) occurs during this time window, it will be ignored with no error reported.

The number of partitions allowed is a function of ARM:STARt:COUNt, and is shown in the table below along with the maximum number of readings (TRIGger:STARt:COUNt) allowed in each partition.

 

ARM:STARt:COUNt

Number of

Maximum Readings

 

 

Memory

(TRIGger:STARt:COUNt)

 

 

Segments

 

 

 

 

 

 

1

1

524,288

 

 

 

 

 

2

2

262,144

 

 

 

 

 

3 - 4

4

131,072

 

 

 

 

 

5 - 8

8

65,536

 

 

 

 

 

9 - 16

16

32,768

 

 

 

 

 

17 - 32

32

16,384

 

 

 

 

 

33 - 64

64

8,192

 

 

 

 

 

65 - 128

128

4,096

 

 

 

 

 

NOTE: If the non-volatile mode of memory is enabled

 

(MEMory:BATTery:STATe ON), then all of the maximum reading counts

 

shown above decrease by four. These four memory locations in each

 

segment hold the data necessary to recover all readings after a power

 

failure.

 

 

 

 

 

 

TRIGger

 

 

 

[:STARt:SEQuence[1]]

 

 

 

:COUNt <number >

 

 

 

[:IMMediate]

[no query]

 

 

:SOURce <source >

 

 

 

:TIMer1 <period >

 

 

 

:TIMer2 <period >

 

 

TRIGger Subsystem

Command Reference 273

Page 273
Image 273
HP E1429A manual TRIGger Subsystem Command Reference