Lakeshore 340 - IEEE-488 Interface Connector; IEEE-488 Rear Panel Connector Details

Lake Shore Model 340 Temperature Controller User’s Manual
Service 11-5
11.4.1 IEEE-488 Interface Connector
Connection to the IEEE-488 Interface connector on the rear of the Model 340 Temperature Controller is made
using cables specified in the IEEE-488-1978 standard document. Briefly, the cable has 24 conductors with an
outer shield. The connectors at each end are 24-way Amphenol 57 Series (or equivalent) with piggyback
receptacles to allow daisy-chaining in multiple device systems. The connectors are secured in the receptacles
by a pair of captive locking screws with metric threads.
The total length of cable allowed in a system is 2 meters for each device on the bus, or 20 meters maximum.
This instrument can drive a bus with up to 10 devices. Figure 11-7 shows the IEEE-488 Interface connector
pin location and signal names as views from the rear panel of the controller.
1112 10987654321
2324 22 21 20 19 18 17 16 15 14 13
IEEE-488 INTERFACE
SH1 AH1 T5 L4 SR1 RL1 PP0 DC1 DT0 C0 E1
C-340-11-7.eps
PIN SYMBOL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
DIO1
DIO2
DIO3
DIO4
EOI
DAV
NRFD
NDAC
IFC
SRQ
ATN
SHIELD
DIO5
DIO6
DIO7
DIO8
REN
GND 6
GND 7
GND 8
GND 9
GND 10
GND11
GND
Data Input/Output Line 1
Data Input/Output Line 2
Data Input/Output Line 3
Data Input/Output Line 4
End Or Identify
Data Valid
Not Ready For Data
Not Data Accepted
Interface Clear
Service Request
Attention
Cable Shield
Data Input/Output Line 5
Data Input/Output Line 6
Data Input/Output Line 7
Data Input/Output Line 8
Remote Enable
Ground Wire – Twisted pair with DAV
Ground Wire – Twisted pair with NRFD
Ground Wire – Twisted pair with NDAC
Ground Wire – Twisted pair with IFC
Ground Wire – Twisted pair with SRQ
Ground Wire – Twisted pair with ATN
Logic Ground
Figure 11-7. IEEE-488 Rear Panel Connector Details