2-6
BIT 4886 051010
2.4
INPUT/OUTPUT SIGNALS
The IEEE 488 port is a 24 pin IEEE 488 connector (Figure 2-3) and conforms mechanically and
electrically to the IEEE 488 standard; refer to Table 2-3 for pin assignments. Table 2-4 describes
the RS 232 port pin connections.
FIGURE 2-3. IEEE 488 (GPIB) CONNECTOR
TABLE 2-3. INPUT/OUTPUT PIN ASSIGNMENTS
PIN
SIGNAL NAME
FUNCTION
1
D
I
01
I/O Line
2
D
I
02
I/O Line
3
D
I
03
I/O Line
4
D
I
04
I/O Line
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
Shield
13
D
I
05
I/O Line
14
D
I
06
I/O Line
15
D
I
07
I/O Line
16
D
I
08
I/O Line
17
REN
Remote Enable
18
GND
Ground (signal common)
19
GND
Ground (signal common)
20
GND
Ground (signal common)
21
GND
Ground (signal common)
22
GND
Ground (signal common)
23
GND
Ground (signal common)
24
LOGIC GND
Logic Ground