Agilent Technologies Ininiium 90000 Especificaciones descargar pdf (Pagina 56)

Chapter 4: Troubleshooting

Primary Trouble Isolation

Figure 4-3

LED Test Screen

3 Repeatedly press the Single button on the front panel to step through and highlight each

LED symbol in the test screen. You can also step through the LEDs by pressing the <<Prev

or Next>> buttons on the display screen. Verify that the corresponding LEDs on the front

panel are the only ones illuminated. Additionally, pressing the Multipurpose button on the

front panel will illuminate all the LEDs while pressing the Clear Display button on the

front panel will turn off all the LEDs.

4 When you are finished, click Close.

5 If any of the LEDS do not work, go to “To check the LEDs” later in this chapter.

6 If both tests pass, go to step E.

Self Calibration

1 Complete a self calibration by following the procedures in chapter 4.

2 If the calibration test fails, look at the details to see the channel associated with the fail.

If it is not channel 1 then replace the acquisition board associated with that channel

(channels 1 and 2 - lower acquisition board, channels 3 and 4 - upper acquisition board).

If it is an error associated with channel 1 then look at the specific cal that failed. If it was

a trigger cal, a timebase cal, or a interpolator gain cal then the problem is most likely

with the backplane board so replace it. If this does not work then replace the lower

acquisition board. If it is a failure associated with channel 1, but is not one of these three

types of cals then replace the lower acquisition and if that does not work then try to

replace the backplane board. If all four channels have cal failures then it may possibly

be a problem with the calibrator located on the backplane board so try replacing that

board first. If the calibration test passes, go to step F.

The system is operational. Performance test the oscilloscope using the procedures in

chapter 3 of this service manual.

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Agilent Technologies Ininiium 90000 Especificaciones Pagina 56