user manual

HP 8517B S-Parameter Test Set Manual 3-1
3 Operating the HP 8517B Test Set
This chapter contains illustrations and descriptions of the HP 8517B front-
and rear-panel features. Information about operating multiple test sets
(Option 001) is also provided.
Front-Panel Features
Figure 3-1 Front-Panel Features of the HP 8517B Test Set
Table 3-1 Front-Panel Description
(1) Line Switch This switch turns the test set on or off. When the side of the switch labeled “0” is depressed, the
test set is OFF; when the side labeled “1” is depressed, the test set is ON.
(2) Line LED This LED is lit when the test set line switch is ON and not lit when the test set line switch is OFF.
(3) Active LED This LED lights about two seconds after power is turned on, following the successful conclusion of
the self-test. If the test set is used with other test sets (Option 001) and is not addressed by the HP
8510C, then this light remains off.
(4) Port 1 This test port transmits RF energy from the source to the DUT and receives reflected or transmitted
RF energy from the DUT. The reflected RF energy is coupled to a sampler within the instrument.
Connections made to this input must be torqued to 90 N-cm (8 in-lb), and no more.
(5) Bias Fuse The fuses that limit bias applied to Port 1 and Port 2 are located in these holders (see the
instrument front panel or the replaceable parts list for the fuse values).