IEEE-488 Reference
5-3
Custom cables may be constructed by using the information
in Table 5-1 and Figure 5-4. Table 5-1 lists the contact as-
signments for the bus, and Figure 5-4 shows the contact con-
figuration.
CAUTION
IEEE-488 common is connected to digi-
tal common. Maximum voltage between
digital common and earth ground is 0V.
Figure 5-3
IEEE-488 connector location
IEEE-488
Figure 5-4
Contact assignments
CONTACT 12 CONTACT 1
CONTACT 13CONTACT 24
Table 5-1
IEEE contact designations
Contact
number
IEEE-488
designation Type
1 DIO1 Data
2 DIO2 Data
3 DIO3 Data
4 DIO4 Data
5 EOI (24)* Management
6 DAV Handshake
7 NRFD Handshake
8 NDAC Handshake
9 IFC Management
10 SRQ Management
11 ATN Management
12 SHIELD Ground
13 DIO5 Data
14 DIO6 Data
15 DIO7 Data
16 DIO8 Data
17 REN (24)* Management
18 Gnd, (6)* Ground
19 Gnd, (7)* Ground
20 Gnd, (8)* Ground
21 Gnd, (9)* Ground
22 Gnd, (10)* Ground
23 Gnd, (11)* Ground
24 Gnd, LOGIC Ground
*Numbers in parentheses refer to signal ground return of refer-
enced contact number. EOI and REN signal lines return on con-
tact 24.
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