Option 002 (Hp·ib) - HP 7475a Operation And Interconnection Manual

Option 002 (HP-I B)
20.
21.
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22.
One Stop
Baud
Rate B4 B3 B
75
l l O
0
150 0
0 1
200
300 0 1
0 1
600
1200 0 1
0
2400 1
4800 1 0
1 0
9600
This 24-pin Hp·IB connector is used to connect
the plotter to a host computer or other Hp·IB
device.
and These two rocker switches
US/MET A4/A3
-
are common to the Hp·IB and RS·232·C inter­
face options. Refer to the Option 001 (RS-232-CI
CCITT V.24) controls for their functional
description .
These five rocker switches are
ADDRESS
-
used to establish the plotter address value.
The plotter address is selected by setting each
switch to the appropriate binary bit position
defined in the following table. The plotter is
set to an address code of 05 at the factory .
This corresponds to a listen character of
and a talk character of
The plotter is i n listen·only mode when all
five switches are set to
plotter does not have an address, but listens
to all data transmitted on the bus. In listen·
only mode the plotter cannot be placed in a
talker-active state and will not respond to a
serial or parallel poll.
Listen-only mode is not compatible with
NOTE:
most software packages and plotter ROMs
PLO'ITER OP�;RATION
Bit Two Stop Bits
2 B
B4 B3 2
0 0 0
0 0 0
1
0 0
1 1
0 0
1
0 1 1 0
1 0 1 0
1
1 1 1 0
1
0 0 1 1 1
1 1
0 1 1
1 0
" E ."
In this mode, the
{Il.l>
Bl
0
1
0
1
0
1
0
1
"%"
. •
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