Agilent Technologies 8510C Servisní příručka stáhnout pdf (Strana 143)

8510XF Network Analyzer Systems 5-7

System Maintenance

Detector Gain Calibration

Procedure The calibration process consists of running a ﬁrmware routine that is internal

to the 8510XF; no external test equipment is required.

1. Be aware that the detector gain calibration process causes some 8510C

settings to change, and that the settings are not restored to their original

conditions afterward. If you want to return to the present settings, save

them before running the calibration.

2. Disconnect any devices from the test ports. During the calibration, the

8510XF will step through its entire power range; any device connected

to the test ports could be at risk of damage from excessive RF input

levels.

3. Call up the detector gain calibration menu by pressing:

[SYSTEM] {MORE} {RF POWER CONFIG} {MORE} {RESET DET GAIN CAL}

4. Choose one of the options from the menu:

a. If

{RUN CAL + USER PRST} is selected, the detector gain calibration

routine is run, and is followed by a user preset. This returns the

system to instrument state #8, and is the recommended option.

b. If

{RUN CAL + FACT PRST} is selected, the detector gain calibration

routine is run, and is followed by a factory preset.

c. If

{RUN CAL NO PRESET} is selected, the detector gain calibration

routine is run, but is not followed by a preset.

5. The calibration run takes about a minute, after which the system returns

to normal operation.

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Agilent Technologies 8510C Servisní příručka Strana 143