[SENSe[<chan >]]:SWEep:OFFSet:POINts <count>

Comments Executable when initiated: No

Coupled Command: Yes. This command is coupled to TRIGger:STARt:COUNt, SENSe:SWEep:POINts, ARM:STARt:COUNt, ARM:STARt:DELay, and MEMory:BATTery:STATe.

Readings which are taken before the arm event occurs are called "pre-arm" readings. Readings taken after the arm event are called "post-arm" readings.

The INITiate command "triggers" pre-arm readings. If any arming events occur before the pre-arm count is satisfied, the arms are ignored and an error occurs. When the pre-arm count is satisfied and a legal arm event occurs, post-arm sampling begins. The remaining number of TRIGger:STARt:COUNt (SENSe:SWEep:POINts) readings are then taken.

If pre-arm readings are not 0, then there must be at least 7 post-arm readings.

Therefore, (SENSe:SWEep:POINts + SENSe:SWEep:OFFSet:POINts) must be 7. (Note that in the previous equation, :OFFSet:POINts will be a negative

number).

Pre-arm reading count values between -3 and 0 will be rounded to -3 or 0, whichever is closer to the specified count.

If an ABORt or power failure occurs during a sequence of measurements, the digitizer will return (FETCh?) or recover (FETCh:RECover?) between one and TRIGger:STARt:COUNt number of readings. Because the digitizer processor does not know when the arm occurs, the readings returned may be pre-arm only, post-arm only, or a combination of both. If less than TRIGger:STARt:COUNt readings have been taken, then that number of readings are returned. If greater than TRIGger:STARt:COUNt readings have been taken, then TRIGger:STARt:COUNt readings are returned.

Related Commands: SENSe:SWEep:POINts, TRIGger:STARt:COUNt, ARM:STARt:COUNt

*RST Condition: SENSe:SWEep:OFFSet:POINts 0

Example Setting 50 pre-arm readings on channel 1, input port 3

CONF1:ARR:VOLT (100),5,(@3)

Configure channel 1 for 100 readings, 5V

 

range

SENS1:SWE:OFFS:POIN -50

Of the 100 total readings, set 50 to be

 

pre-arm

[SENSe[<chan >]]:SWEep Subsystem

Command Reference 259

Page 259
Image 259
HP E1429A manual Example Setting 50 pre-arm readings on channel 1, input port