3
Connection
Figure 1
Simplified schematic for Model 7706
NOTES
Connect 4-wire sense leads using channels 11–20.
To disconnect channels 11–20 from channels 1–10, send:
:ROUT:MULT:CLOS (@126)
(note opposite logic)
Channel 22
NOTE
Non-isolated
grounds ( )
are referenced to
chassis ground.
Channel 23
DAC
Channel 23
16
Channel 24
DAC
Channel 24
16
Totalizer
+IN
–IN
+GATE
–GATE
Channel 25
32
Cold junction
Ref x2
Channel 1
HI
LO
Channel 10
HI
LO
(Channels 2–9)
Channel 11
HI
LO
Channel 20
HI
LO
(Channels 12–19)
HI
LO
Sense
HI
LO
Input
Channel 26
2-Pole (Open)
4-Pole (Closed)
(see Note)
To Model 2700
Backplane
Channel 28
(see Note)
Backplane
isolation
Channel 27
(see Note)
Backplane
isolation
NOTES Channels 26–28 in this schematic
refer to the designations used for
control and not actual available channels.
Channels 26, 27, and 28 can be individually
controlled using
ROUTe:MULTiple
if the
module is not to be connected to the
internal DMM.
For more information, refer to the
ROUTe:MULTiple
command section
in the Model 2700 User’s Manual.
Sense HI
LO
Input
HI
LO
Cold junction
Ref x2
Bit
16
Channel 21
Digital
Output
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
