User`s guide

Chapter 16 463

Troubleshooting

Basic Signal Generator Operations

Cannot Turn Off Help Mode

1. Press Utility > Instrument Info/Help Mode

2. Press

Help Mode Single Cont until Single is highlighted.

The signal generator has two help modes; single and continuous.

When you press

Help in single mode (the factory preset condition), help text is provided for the

next key you press. Pressing another key will exit the help mode and activate the key’s

function.

When you press

Help in continuous mode, help text is provided for the next key you press and

that key’s function is also activated (except for

Preset). You will stay in help mode until you

press

Help again or change to single mode.

No RF Output

Check the RF ON/OFF annunciator on the display. If it reads RF OFF, press RF On/Off to toggle

the RF output on.

The Power Supply has Shut Down

If the power supply is not working, it requires repair or replacement. There is no

user-replaceable power supply fuse. Refer to the Service Guide for instructions.

Signal Loss While Working with Mixers

If you experience signal loss at the signal generator’s RF output during low-amplitude coupled

operation with a mixer, you can solve the problem by adding attenuation and increasing the

RF output amplitude of the signal generator.

Figure 16-1 on page 464 shows a hypothetical configuration in which the signal generator

provides a low amplitude signal to a mixer.