Model 5340A
Installation and Remote Programming
5340A ADDRESS
SWITCH
RESULTANT LISTEN
SETTINGS ADDRESS
2
-
34. Example
of
Setting an Address
RESULTANT TALK
ADDRESS
2
-
35. Except for
?
and
-
(underscore), any talk
-
listen address combination in the shaded areas
of Table
2
-
2
can be used. Selecting
a
particular listen address will result in
a
corresponding talk
address or vice versa. For example, if the ASCII
#
symbol is chosen for the listen address, then
ASCII “C” would be the corresponding talk address. This can be seen in Tables
2
-
2
and 2
-
3 and
as
follows:
D107 D106 D105 D104 D103 D102
DIOl
-
BUSDATALINES
b7
b6 b5 b4 b3 b2 bl
-
ASCIIBITS
0
1
0
0 0
1
1
-
LISTEN ADDRESS
=
#
1
0 0 0
0
1
1
-
TALK ADDRESS
=
C
A5=O A4=O A3=O A2=1 A1=1
-
ADDRESS SWITCHES
A5 A4 A3
A2
A1
0
0
0
1
1
0
0
1
0 0
0
1
0
1
0
1 1
1
0 0
2
-
36. Note that for
a
given setting of the address switches, the listen address
is
determined by
driving D107 to
0
and D106 to 1. The talk address
is
implemented by driving D107 to
1
and D106
to
0.
Table 2
-
3 lists the available address codes.
#
C
$
D
*
J
<
\
2
-
37. Other examples
of
5340A talk listen addresses are
as
follows:
I
I
S
I
1
0 0
1
3
2
-
38. Line Characteristics
2
-
39.
All 15 bus lines are designed to be compatible with
n‘L or DTL integrated circuits. Since
wire
-
ANDing is used on some lines, the TTL line drivers must be either open collector or tri
-
state.
Each line in the
534QA
is
terminated in a resistor divider consisting of
a
3K connected to 5V and a
6.2K connected to ground. All receivers are hex inverters (SN 7404N or equivalent) and the
drivers are open collector NAND gates (SN
7438N or equivalent). These may be put into four
groups:
a.
IFC, ATN, and REN are receivers only. They require
-
3.2 mA maximum at 0.4V to drive.
>*p
SN
7404N
I
2
-
9
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