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HP 8481H/82H
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How to use this section.
This section contains information for adapting this manual to
instruments for which the content does not directly apply.
If the serial prefix of your HP 8481II is 2604A or below, this section
applies to you. If the serial prefix of your HP 8482H is 2609A or
below, this section applies to you. Find the serial prefix that applies
to your instrument and make the changes described below'.
2604A, 2609A
1. Replace Figure 2 Component and Assembly Locations with the
Figure 2 in this section.
2349A, 2350A
1. Replace Figure 2 as described above.
2. The appearance of the labels changed. The preferred replacements
are listed in the parts list.
2237A
1. Changes listed above apply to this prefix.
2. Compression spring MP6 and screw's MP10 through MP18 were
changed. The preferred replacements are listed in the parts list.
3. In Power Sensors with this prefix number pin A was added to
Jl. Pin A was connected to the junctions of F,
M
and J. When
servicing Power Sensors with this prefix we recommend removing
this connection, isolating pin A.
1925A, 1926A
1. With the exception of the addition of pin A to Jl, all the changes
listed above apply to instruments with these prefixes.
2. Four capacitors were added, to connector Jl. The partial,
schematic of Figure 3, showing their placement, is in this section.
When servicing Power Sensors with these prefixes, we recommend
removing these capacitors.
1545A
1. With the exceptions of changes to Jl (Jl is schematically the
same as depicted in this manual) all changes listed above apply to
instruments with this prefix.
2. The part number for Jl was 1251-3228. The part number
currently listed in the parts list is the preferred replacment.
3. The part number for A2 Assembly wa.s 08481-60017 for the HP
8481H, and 08481-60005 for the HP 8482H. The part numbers
currently listed in the parts list is the preferred replacement.
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