Agilent Technologies E1445A Manual do Utilizador descarregar pdf (Página 207)

100

101

Available Marker Sources

There are six marker sources available for output at the AFG’s front panel

“Marker Out” BNC and the ECL Trigger Lines. Use the

[SOURce:]MARKer:FEED <source> command to select the “Marker Out”

BNC; use

[SOURce:]MARKer:ECLTrg<n>:FEED <source> command to

select the ECL trigger lines.

The sources for the “Marker Out” BNC, not the ECL trigger lines, can

output the marker pulses as either active high (

NORMal) or active low

(

INVerted). Use the [SOURce:]MARKer:POLarity <polarity> command to

select the polarity.

The different marker sources are as follows:

ARM[:STARt|:SEQuence[1]][:LAYer[1]]

For arbitrary waveforms, the marker level changes with the first point on the

waveform of the first waveform repetition. The source then outputs a marker

pulse at the last waveform point of each repetition. For

SINUsoid outputs, the

marker is a 50% duty cycle square wave at the waveform frequency.

ARM[:STARt|:SEQuence[1]]:LAYer2

The AFG asserts a marker when triggering the first amplitude point after

receiving a start arm. The AFG unasserts a marker with the last amplitude

point of the last waveform repetition, or following an

ABORt.

[SOURce:]FREQuency[1]:CHANge

The source outputs a one sample period wide marker pulse after a frequency

change occurs. This shows that the steady state frequency was reached.

[SOURce:]LIST[1]

The source outputs marker pulses specified by the

[SOURce:]LIST[1][:SEGMent]:MARKer and

[SOURce:]LIST[1]:SSEQuence:MARKer commands. Increase the pulse size

by selecting marker output for consecutive points on the waveform. Can

only be used with arbitrary waveforms (see Chapters 3 and 7 on how to

generate arbitrary waveforms).

[SOURce:]PM:DEViation:CHANge

This source outputs a one sample period wide marker pulse after a phase

change occurs. This shows that the new phase was reached.

Chapter 6 Marker Outputs/Multiple AFG Operations 205

1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 533 534

Comentários a estes Manuais

Sem comentários

Agilent Technologies E1445A Manual do Utilizador Página 207

Comentários a estes Manuais

Manuais e produtos relacionados com Geradores de energia Agilent Technologies E1445A