HP 8517B Manuel d'utilisateur télécharger pdf (Page 83)

HP 8517B S-Parameter Test Set Manual

5-23

Troubleshooting the Test Set

Troubleshooting Procedures

Finding the Faulty

Assembly

Compare the results recorded in Table 5-6 with the matrix in Table 5-7.

There are 32 possible combinations, twelve of which point to probable

failures. These are shown in Table 5-7.

Sample Diagnostics Suppose you have determined that paths 3 and 5 are bad. Paths 1, 2, 4, and 6

are good. Refer to Table 5-7. Notice that the most likely cause for the failure

is the b1 sampler.

Table 5-6 Test Results for Path 1 through Path 6

Path1

Path2

Path 3

Path 4

b1 thru

Path5

b2 thru

Path6

Table 5-7 Most Probable Failures (

indicates Bad;

—

indicates Good)

Path Most Probable Failure

Path1

Path2

Path 3

Path 4

b1 thru

Path5

b2 thru

Path6

Assembly, or Description of Condition

——————The HP 8517B test set is not the problem

B B B B B B The source, source cable, VTO, cables from rear

panel to switch splitter

— B — B B — The switch splitter

B—B——BThe switch splitter

——B—B—b1 sampler

B —————a1 sampler

— B ————a2 sampler

——— B — Bb2 sampler

— — B — B B Port 1 connector or directional coupler

—— B — B BA1, T1

——— B B —A2, T2

— — — B B B Port 2 connector or directional coupler

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 135 136

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HP 8517B Manuel d'utilisateur Page 83

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