8508A
Users Manual
Table 4-1. IEEE Interface Capability
IEEE 488.1
Subset Interface Function
SH1 Source Handshake Capability
AH1 Acceptor Handshake Capability
T6 Talker (basic talker, serial poll, unaddressed to talk if addressed to listen)
L4 Listener (basic listener, unaddressed to listen if addressed to talk)
SR1 Service Request Capability
RL1 Remote/Local Capability (including Local Lockout)
PP0 No Parallel Poll Capability
DC1 Device Clear Capability
DT1 Device Trigger Capability
C0 No Controller Capability
E2 Open-Collector and Three-State Drivers
Interconnections
Instruments fitted with an IEEE 488 interface communicate with each other through a
standard set of interconnecting cables, as specified in the IEEE 488.1 Standard document.
The interface socket is fitted on the rear panel. It accommodates the specified connector,
whose pin designations are also standardized as shown in Figure 4-1.
13 24
1 12
adj194f.eps
IEEE 488 Input/Output - Pin Layout and Designations
Pin No. Name Description
1 DIO 1 Data Input/Output Line 1
2 DIO 2 Data Input/Output Line 2
3 DIO 3 Data Input/Output Line 3
4 DIO 4 Data Input/Output Line 4
5 EOI End or Identify
6 DAV Data Valid
7 NRFD Not Ready For Data
8 NDAC Not Data Accepted
9 IFC Interface Clear
10 SRQ Service Request
11 ATN Attention
12 SHIELD Screening on cable (connected to 1281 safety ground)
13 DIO 5 Data Input/Output Line 5
14 DIO 6 Data Input/Output Line 6
15 DIO 7 Data Input/Output Line 7
16 DIO 8 Data Input/Output Line 8
17 REN Remote Enable
18 GND 6 Gnd wire of DAV twisted pair
19 GND 7 Gnd wire of NRFD twisted pair
20 GND 8 Gnd wire of NDAC twisted pair
21 GND 9 Gnd wire of IFC twisted pair
22 GND 10 Gnd wire of SRQ twisted pair
23 GND 11 Gnd wire of ATN twisted pair
24 GND 8508A Logic Ground (internally connected to 8508A Safety Ground)
Figure 4-1. IEEE 488 Input/Output Connector
4-4
To Next Page
Loading...
