Keithley 2750 User Manual

Model 2750 Multimeter/Switch System User’s Manual IEEE-488 Bus Overview G-11
Figure G-3
Command codes
D
7
D
6
D
5
D
4
X
0 0 0
Command
X
0 0 1
Command
X
0 1 0
Primary
Address
X
0 1 1
Primary
Address
X
1 0 0
Primary
Address
X
1 0 1
Primary
Address
X 1 1 0
X
1 1 1
Bits
D
3
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
D
2
0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
D
1
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
D
0
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
Column
Row
0 1 2 3 4 5 6 7 8 9
10
11
12 13 14 15
0 (A)
NUL
SOH
STX ETX
EOT
ENQ
ACK
BEL
BS
HT
LF
VT
FF
CR
SO
SI
0 (B)
GTL
SDC
PPC*
GET
TCT*
1 (A)
DLE
DC1 DC2 DC3 DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
RS
US
LLO
DCL
PPU*
SPE
SPD
1 (B) 2 (A)
SP
! "
# $
%
&
' ( )
• +
,
_
. /
2 (B)
0 1 2 3 4 5 6 7 8 9
10
11
12 13 14 15
3 (A)
0 1 2 3 4 5 6 7 8 9
: ;
< = >
?
3 (B)
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
UNL
4 (A)
@
A
B
C
D
E F
G H
I J
K
L
M
N
O
4 (B)
0 1 2 3 4 5 6 7 8 9
10
11
12 13 14 15
5 (A)
P
Q
R
S
T
U
V
W
X Y Z
[
\
]
5 (B)
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
UNT
6 (A)
a
b
c
d
e
f
g
h
i j
k
l
m
n o
6 (B) 7 (A)
p q
r
s
t
u
v
w
x y z
{
:
}
=
DEL
~
7 (B)
ADDRESSED
COMMAND
GROUP
(ACG)
UNIVERSAL
COMMAND
GROUP
(UCG)
LISTEN
ADDRESS
GROUP
(LAG)
TALK
ADDRESS
GROUP
(TAG)
PRIMARY
COMMAND
GROUP
(PCG)
SECONDARY
COMMAND
GROUP
(SDC)
*PPC (PARALLEL POLL CONFIGURE) PPU (PARALLEL POLL UNCONFIGURE), and TCT (TAKE CONTROL) not implemented by Model 2750. Note: D
0
= D101 ...D
7
= D108; X = Don't Care.
2750-900-01.book Page 11 Wednesday, August 3, 2011 7:56 AM

Keithley 2750 Specifications

General

Interface	GPIB, RS-232, Ethernet
Switching Speed	Up to 500 channels/second
Maximum Voltage	300V
Operating Temperature	0°C to 50°C
Measurement Functions	DCV, ACV, DCI, ACI, 2-wire Resistance, 4-wire Resistance, Frequency, Temperature
Resolution	6.5 digits
Current	1A
Maximum Current	1A