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Al3 Second Converter
Caution
Turn off the spectrum analyzer power when replacing the Al3 second
converter assembly. Failure to turn off the power may result in damage to the
assembly.
Removal
1. Place the spectrum analyzer upside-down on the work bench.
2. Disconnect W33, coax 81, and W35, coax 92, from the Al3 assembly.
3. Disconnect W48, coax 8, from A13J3.
4. Disconnect W57 from
A13Jl.
5. Remove the four screws securing Al3 to the main deck and remove the assembly.
6. Disconnect ribbon cable W13 from the Al3 assembly.
Replacement
1. Connect ribbon cable W13 to the Al3 assembly.
2. Secure Al3 to the spectrum analyzer main deck, using four
panhead
screws.
3. Connect W33, coax 81, to A13J4 600 MHz IN jack.
4. Connect W35, coax 92, to A13J2 310.7 MHz OUT jack.
5. Connect W48, coax 8, to A13J3. Route W48 under W35, coax 92.
6. Connect W57 to
A13Jl.
Ensure that all of the connections on
W56/FL2/W57
and on W48
are torqued to 113 Ncm (10 in-lb).
4-36 Assembly Replacement