No Modulation At The Rf Output; Sweep Appears To Be Stalled; Cannot Turn Off Sweep Mode - Agilent Technologies E4428C User Manual

Esg signal generators

Hide thumbs Also See for E4428C:

Table of Contents

Troubleshooting

Basic Signal Generator Operations

No Modulation at the RF Output

Check the MOD ON/OFF annunciator on the display. If it reads MOD OFF, press

modulation on.

Although you can set up and enable various modulations, the RF carrier is modulated only when you have

On the E4438C for digital modulation, make sure that

The current status of the sweep is indicated as a shaded rectangle in the progress bar. You can observe the

progress bar to determine if the sweep is progressing. If the sweep appears to have stalled, check the

❏ Have you turned on the sweep by pressing any of the following key sequences?

❏ Is the sweep in continuous mode? If the sweep is in single mode, be sure that you have pressed the

Single Sweep

softkey at least once since completion of the prior sweep. Try setting the mode to

continuous to determine if the missing single sweep is blocking the sweep.

❏ Is the signal generator receiving the appropriate sweep trigger? Try setting the

Free Run to determine if a missing sweep trigger is blocking the sweep.

❏ Is the signal generator receiving the appropriate point trigger? Try setting the

Run to determine if a missing point trigger is blocking the sweep.

❏ Is the dwell time appropriate? Try setting the dwell time to one second to determine if the dwell time was

set to a value which was too slow or too fast for you to see.

❏ Do you have at least two points in your step sweep or list sweep?

In the sweep mode menu you can choose to set the sweep to various sweep types or to turn sweep off.

is set to On.

to toggle the

Sweep Trigger

Point Trigger

softey to Free

Table of Contents