Specifications

RIGOL
12 M300 Selection Guide
The figure below is the schematic diagram of MC3120 and M3TB20.
Figure 10 MC3120 Schematic Diagram
The definitions of the pins of the 78Pin interface of MC3120 are as shown in the figure below.
Pin Label
Pin Qty.
Definition
HI_n
[1]
20
Correspond to the 20-channel
differential positive input
terminal on the external
terminal block
LO_n
[1]
20
Correspond to the 20-channel
differential negative input
terminal on the external
terminal block
NC
28
Connection is forbidden
EX_HI
1
Correspond to the 2-W HI
terminal on the external
terminal block
EX_LO
1
Correspond to the 2-W LO
terminal on the external
terminal block
EX_HS
1
Correspond to the SENSE HI
terminal on the external
terminal block
EX_LS
1
Correspond to the SENSE LO
terminal on the external
terminal block
+5V
2
Connected to the digital
temperature sensor (I
2
C type)
on the external terminal block
DGND
2
SDA
1
SCL
1
Note
[1]
: n is an integer from 01 to 20.