User`s guide

RIGOL Chapter 2 Front Panel Operations
2-50 M300 User’s Guide
To Control MC3132/MC3232
MC3132 is a 32-channel multiplexer (MUX-32 for short). MC3232 is a 32-channel
reed multiplexer (REED-MUX-32 for short) and can provide relatively faster switching
speeds. MC3132/MC3232 is divided into two banks of 16 two-wire channels (HI and
LO) each and can be used for 2-wire and 4-wire connections. When making 4-wire
resistance measurement, the instrument automatically pairs channel n with channel
n+16 (wherein, n is an integer between 1 and 16). MC3132/MC3232 is used with the
external terminal block (M3TB32) which has a built-in thermocouple reference
junction.
01
H
L
H
L
...
H
L
H
L
...
DMM
Source
H
L
DMM
Sense
H
L
16
17
32
Bank Switch
Channel Switches
98
99
97
Backplane Switches
H
L
Com
(4W Sense)
H
L
Com
Signals
to be
Measured
Reference
Junction
Terminal Blocks: M
3TB32
H
L
01
H
L
32
.
.
.
78
-
Pin
Interface
Figure 2-17 MC3132/MC3232 Schematic Diagram
The control interface of MC3132/MC3232 is as shown in Figure 2-18. Use the
up/down and left/right direction keys to select the desired channel. The channel
currently selected is highlighted, for example,
. You can perform various
operations on the channel currently selected (such as disconnect and close the
channel).