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Commands Listed in Alphabetical Order

Waveforms are t

he displayed d ata point values taken from acquisition intervals.

Each acquisition interval represents a time duration set by the horizontal scale

(time per division). The oscilloscope sampling system always samples at the

maximum rate, so the acquisition interval may include than one sample.

The acquisition mode (which you set using this ACQuire:MODe command)

determines how the ﬁnal value of the acquisition interval is generated from the

many data samples.

Group

Acquisition

Syntax

ACQuire:MODe {SAMple|AVErage}

ACQuire:MODe?

Related Commands

ACQuire:NUMAVg, CURVe

Arguments

SAMple speciﬁes that the displayed data point value is the ﬁ rst sampled value

that is taken during the acquisition interval. In sample mode, all waveform data

has 8 bits of precision. You can request 16 bit data with a CURVe query but the

lower-order 8 bits of data will be zero. SAMple is the default mode.

AVErage speciﬁes averaging mode, in which the resulting waveform shows an

average of SAMple d ata points from several separate waveform acquisitions. The

oscilloscope processes the number of wav eforms you specify into the acquired

waveform, creating a running exponential average of the input signal. The number

of waveform acquisitions that go into making up the average waveform is set or

queried using the ACQuire:NUMAVg command.

Examples

ACQUIRE:MODE AVErage sets an average acquisition mode indicating that

the resulting waveform is the average of the speciﬁed number of waveform

acquisitions.

ACQUIRE:MODE? might return:ACQUIRE: MODE AVERAGE indicating that

the displayed waveform is the average of the speciﬁed number o f waveform

acquisitions.

ACQuire:NUMACq? (Query O nly)

The acquisition number will continue to increase while acquisitions are running

until there is a reset. Starting and stopping acquisitions do not cause this number

to reset. For example, if acquisitions are running, the acquisition count will

increase (assuming the oscilloscope is triggering). If you stop the acquisitions, the

acquisition number will freeze at a given number (For example: 5000). If you

2-60 MSO2000B, DPO2000B, MSO2000 and DPO2000 Series Oscilloscopes Programmer Manual

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Connect-Tek USB-2 Spécifications Page 76