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Service
Lake Shore Model 642 Electromagnet Power Supply User's Manual
1
12
Pin
Symbol
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
Cable Shield
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
Ground Wire – Twisted pair with DAV
19
GND 7
Ground Wire – Twisted pair with NRFD
20
GND 8
Ground Wire – Twisted pair with NDAC
21
GND 9
Ground Wire – Twisted pair with IFC
22
GND 10
Ground Wire – Twisted pair with SRQ
23
GND 11
Ground Wire – Twisted pair with ATN
24
GND
Logic Ground
Figure 7-12. IEEE-488 Connector Details
13
24
Description
7-15
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Table of Contents
Troubleshooting
