Model
8901B
Setting of the HP-IB address should be performed only
by
service trained
persons who are
aware
of
the potential shock hazard
of
working on an
instrument with protective covers removed.
To avoid hazardous electrical shock, the line (Mains) power cable should be
disconnected before attempting to change the HP-IB address.
Installation
In t,,e Modulation Analyzer, the HP-Il3
talk
and listen addresses
are
selectable by an internal sw.xh
(Figure
2-2).
This address can be read by selecting BUS
ADRS
(Blue Key,
LOCAL).
The following
procedure explains setting of the switches. Refer
to
Table
2-2
for
a
listing of the
talk
and listen
addresses. In the factory, the address
is
set for a
talk
address of
“N”
and
a
listen address of
“.”
(period).
In binary, this
is
01110;
in
decimal
it
is
14.
1.
Disconnect the line (Mains) power cable.
2.
Remove any HP-Il3 cables or connectors from the HP-E3 connector.
3.
Remove the Modulation Analyzer’s
top
cover.
a. Remove the
two
plastic feet from the rear of the
top
cover by removing the pan-head Pozidriv
b.
Unscrew the Pozidriv screw
at
the center of the rear edge of the
top
cover. This
is
a
captive
c.
Lift
off
the
top
cover.
screw within each foot.
screw and
will
cause the top cover
to
pull away from the front frame.
4.
Locate the HP-IB address switch on the A14 Remote Interface Assembly near the front right of
the
instrument. The A14 assembly may be recognized
as
having one brown and one yellow printed
circuit board extractor.
Figure
2-2.
The HP-IB Address Switch Shown
as
Set
by
the Factory
The Address
Shown
is
01
11
0
in Binary
(14
in
Decimal)
With
Both Talk Only and Listen Only
Off
2-5
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