Agilent Technologies 35670-90066 manual To troubleshoot auto-range failures, Inst Mode

Agilent 35670A	Troubleshooting the Analyzer
	To troubleshoot auto-range failures

To troubleshoot auto-range failures

Use this test to check the auto-range and overload detector circuits on the A1/A2 Input assembly. This test assumes that calibration and all self tests passed.

•Set the power switch to on ( l ).

•Press the following keys:

[ System Utility ]

[ CALIBRATN ]

[ AUTO CAL OFF ]

[ Inst Mode ]

[ CHANNELS 4 ] or [ CHANNELS 2 ] [ Input ]

[ ALL CHANNELS ]

[ CH* FIXED RANGE ] 1

[ dBVrms ] [ Source ]

[ SOURCE ON ] [ LEVEL ]

1

[ dBVrms ]

[ System Utility ]

[ MORE ]

[ SERVICE TESTS ]

[ SPCL TEST MODES ] [ SOURCE LEVEL ]

The Half range LEDs for all channels should be on and the Over range LEDs should be off.

•Press the following keys:

[ Source ]

[ LEVEL]

5

[ dBVrms ]

The Half range and Over range LEDs for all channels should be on.

•Press the following keys:

[ Input ]

[ CH* AUTO RANGE ]

After the auto-range routine is finished, the Half range LEDs should be on and the Over range LEDs should be off.

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