Agilent Technologies 5071A Assembly/Module Diagnostic Trees (Diagnostic Section 3)

Assembly-Level Service
Service
2-8
Assembly/Module Diagnostic Trees
(Diagnostic Section 3)
A8 Diagnostic Tree (A/M Subsection 3)
3.3.3 1 PPS Outputs Test
Step 2 text is changed to:
Use the oscilloscope with 50 Ω input termination to check for
20 microsecond pulses at a rate of one pulse per second at the
external front-panel 1 PPS output connector.
Step 3 text first sentence is changed to:
Verify that the 1 PPS output level is: pulse low level less than
0.5 volts, and pulse high level more than 3. 0 volts .
The QUESTION: is changed to:
Is the 1 PPS output as specified in step 2?
3.3.4 A8 Front/Rear-Panel Sync Inpu t T est
The procedure title is changed to:
3.3.4 A8 Front-Panel Sync Input Test
Step 5 is deleted.
3.3.5 A8-to-Chassis Interconnect Test
Step 3 text is changed to:
Carefully remove the two SMB cable connectors (Note their locations
first.) f rom J17 and J18 on A1.
Step 4 text is changed to.
Verify continuity and rule out short-to-ground for both cables an their
corresponding front-panel 1 pps output and Sync input connectors.
Record results.
The QUESTION, text is changed to:
Are any of the two SMB-to-BNC cable assemblies open or shorted?
Any TCO Opt ion:
Any TCO Opt ion:
Any TCO Opt ion: