DATA Subsystem

This subsystem allows you to configure and remove data from reading memory. The instrument clears all measurements from reading memory when the measurement configuration changes, or when any of these commands are executed: INITiate, MEASure:<function>?, READ?, *RST, SYSTem:PRESet.

Command Summary

DATA:LAST?

DATA:POINts?

DATA:POINts:EVENt:THReshold

DATA:REMove?

DATA:LAST?

Returns the last measurement taken. You can execute this query at any time, even during a series of measurements.

DATA:POINts?

Returns the total number of measurements currently in reading memory. You can execute this query at any time, even during a series of measurements.

• You can store up to 1,000 measurements in the reading memory of the 34460A, 10,000 measurements on the 34461A, 50,000 measurements on the 34465A/70A (without the MEM option), or 2,000,000 measurements on the 34465A/70A (with the MEM option).

DATA:POINts:EVENt:THReshold <count>
DATA:POINts:EVENt:THReshold?

Sets the number of measurements to store in reading memory before setting bit 9 in the Standard Operation Register group event register to 1. An event register is a read-only register that latches events from the condition register. While an event bit is set, subsequent events corresponding to that bit are ignored.

For more information on the SCPI Status System, see Status Subsystem Introduction.

Parameter	Typical Return
34460A: 1 to 1,000 readings 34461A: 1 to 10,000 readings 34465A/70A: 1 to 50,000 readings (without the MEM option), or 1 to 2,000,000 readings (with the MEM option)  The default value is 1 for both models.	+125
Set the reading memory threshold to 125 measurements: DATA:POIN:EVEN:THR 125

• To report any subsequent events, the measurement count must first drop below the programmed threshold before reaching the threshold again.
• Use STATus:OPERation:ENABle to enable the Memory Threshold bit (bit 9 in the Standard Operation Event register) to be reported to the Status Byte.
• Once the Memory Threshold bit (bit 9 in the Standard Operation Event register) is set, it remains set until cleared by STATus:OPERation:EVENt? or *CLS.
• The Standard Operation Condition register shows the current condition. See STATus Subsystem Introduction for further information.
• This parameter is set to its default value after a Factory Reset (*RST) or Instrument Preset (SYSTem:PRESet).