Troubleshooting the Analyzer

Agilent 35670A

 

To troubleshoot trigger failures

 

G

Step 2. Determine the probable faulty assembly or next step by comparing the trigger

failure to the following table.

 

 

 

 

If the trigger failure matches more than one entry in the table, use the entry closest to

 

the beginning of the table.

 

 

Trigger Mode Failing

Probable Faulty

 

 

Assembly or Next Step

 

 

 

 

 

 

 

All channels and external trigger fail all trigger modes

Step 3

 

 

 

 

All channels trigger but external trigger fails all trigger modes

Step 4

 

 

 

 

At least one channel or external trigger functions correctly

A5 Analog

 

 

 

 

Channel level fails

A5 Analog

 

Arm fails

 

 

External trigger fails user level or TTL level

 

 

 

 

 

External trigger fails EXT RANGE

A10 Rear Panel

 

 

 

 

Trigger delay fails

A6 Digital

Step 3. Check trigger signal to Digital assembly.

GSet the power switch to off ( O ).

Remove the A5 Analog assembly and attach a test clip patch cord to TP 204.

Connect a logic probe to the patch cord and TP 160 (ground).

Reinstall the Analog assembly in the card nest with patch cord and probe attached.

Set the power switch to on ( l ).

Press the following keys:[[ CALIBRATN ]AUTO CAL OFF ][]System Utility

[ Input ]

[ ALL CHANNELS ]

[ CH* FIXED RANGE ] 1

[ Vpk ]

[ Source ]

[ SOURCE ON ] [ LEVEL ]

[ 1 ]

[ Vpk ]

[ System Utility ]

[ MORE ]

[ SERVICE TESTS ]

[ SPCL TEST MODES ] [ SOURCE LEVEL ]

[ Trigger ]

[ CHANNEL 1 ]

4-64

Page 240
Image 240
Agilent Technologies 35670-90066 manual Trigger Mode Failing Probable Faulty Assembly or Next Step, Input