user manual

6-12 HP 8517B S-Parameter Test Set Manual
HP 8517B Test Set Replacement Procedures
Assembly Replacement Procedures
Input Amplifier
Replacement
A22 Input Amplifier Assembly
NOTE This procedure is for Option 007, Option 002 “plus” 007, and Option 004
“plus” 007, only.
1. See the figure in Chapter 7, Table 7-17 for the location of the A22
amplifier.
2. Without disconnecting AT1 and AT2 fixed attenuators, remove the other
five semi-rigid cables attached to the A18 switch/splitter.
3. Remove the W45 semi-rigid cable between the A22 input amplifier and
J7 rear-panel RF input connector.
4. Remove the two screws holding the switch/splitter to the amplifier
mount bracket.
5. Remove the switch/splitter from the amplifier mount bracket.
6. Remove the four screws that secure the A22 input amplifier to the
amplifier-mount bracket.
Buffer Amplifier
Replacement
A23 to A26 Buffer Amplifiers
NOTE This procedure is for Option 007, Option 002 “plus” 007, and Option 004
“plus” 007, only.
1. See the figure in Chapter 7, Table 7-17 for the location of the buffer
amplifiers.
2. Remove the two semi-rigid cables from the buffer amplifier to be
replaced.
3. Remove the four screws securing the buffer amplifier to the amplifier
mount bracket.
4. Remove the buffer amplifier.