HP 7475a, Operation And Interconnection Manual

Page: 41 / 101

Option 002
(HP-I B)
20.
21.
22.
. . 1 ,
..... oq
� <t
•
One Stop
Bit
Two Stop Bits
Baud
Rate B4
B3
B
2
B4
B3 B
2
Bl
0 0
0 0
75 0 0
0 1
l l O
0 0
1
0
150 0 0
1
1
200
0
1
0 0
300 0 1 0
1
1 0
1 1
600 0 1
1
0 1 1 0 0
1200 0 1 1
1
1 1
0
1
2400 1
0 0 0
1
1
1
0
4800 1 0 0
1
1 1
1
1
9600
1 0
1 0
This 24-pin Hp·IB connector is used to connect
the plotter to a host computer or other Hp·IB
device.
US/MET
and
A4/A3
-
These two rocker switches
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 .
ADDRESS
-
These five rocker switches are
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
"
E
."
The plotter is in listen·only mode when all
five switches are set to
{Il.l>
In this mode, the
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.
NOTE:
Listen-only mode is not compatible with
most software packages and plotter ROMs
. •
PLO'ITER OP�;RATION
2-23