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WARNING
Shock hazard and static electricity
can cause damage.
Disassembly should be preformed by
qualified personnel only.
1. Take the Digibridge to a qualified electronic
technician who has the necessary equipment
for minor disassembly and adjustment. Have
the electronic technician remove the interface
option assembly, as described in his 1693
Digibridge Service instructions.
There is no need to remove the top cover first.
2. Have the electronic technician set the
switches in "DIP" switch assembly S2 to
the desired address, which is a 5-bit binary
number. (See below.)
Figure 2-3: DIP switch set to Decimal Address 3
3. Have the electronic technician replace the
interface option assembly in its former place.
Notice that S2 is located at the end of the
interface option board, about 3 cm (1 in.)
from the TALK switch S1.
If S2 is covered
A. Lift the cover off, exposing the "DIP"
switch, which has 5 tiny switches, num-
bered 1 thru 5.
B. To enter logical 1's, depress the side of
each switch nearest the end of the board
(switch open).
C. To enter logical 0's, depress the other side
of the switch (switch closed). The address
is read from 5 to 1.
Thus, for example, to set up the address 00011,
enter 0's at positions 5, 4, 3; enter l 's at
positions 2 and 1. (This makes the talk address
"C" and the listen address "#".)
Installation
Strictly speaking, the address includes more; S2
determines only the device-dependent bits of the
address. You cannot choose talk and listen addresses
separately, only as a pair. The list of possible pairs is
shown in Table 2-1.
The GPIB Address of the Digibridge is set by the
SW2 DIP Switch. The numeric value is set by setting
the switch on or off for the corresponding bit with
the OFF position for binary 1 and ON position for
binary 0. Depress the rocker toward the OFF mark-
ing for OFF and toward the numeric marking for the
corresponding ON position.
Decimal
Address
S1
S2
0
ON
ON
1
OFF
ON
2
ON
OFF
3
OFF
OFF
4
ON
ON
5
OFF
ON
6
ON
OFF
7
OFF
OFF
8
ON
ON
9
OFF
ON
10
ON
OFF
11
OFF
OFF
12
ON
ON
13
OFF
ON
14
ON
OFF
15
OFF
OFF
16
ON
ON
17
OFF
ON
18
ON
OFF
19
OFF
OFF
20
ON
ON
21
OFF
ON
22
ON
OFF
23
OFF
OFF
24
ON
ON
25
OFF
ON
26
ON
OFF
27
OFF
OFF
28
ON
ON
29
OFF
ON
30
ON
OFF
31
Not Used
Table 2-1: IEEE-488 address settings
1693 RLC Digibridge
Switch Settings
S3
S4
S5
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
11
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