Specifications

RIGOL
18 M300 Selection Guide
4. MC3324 and M3TB24
MC3324 is a 20-voltage-channel + 4-current-channel mixed multiplexer. All the 20 voltage channels
switch both HI and LO inputs, thus providing fully isolated inputs for the DMM module and the 20
voltage channels are divided into two banks (called A and B) with 10 two-wire channels for each
bank. When making 4-wire resistance measurement, the instrument automatically pairs the channels
of A bank and B bank. All the channels added into the scan list are break-before-make. You can close
multiple channels on this module when you have not configured any channel to be part of the scan
list. The 4 current channels are used in combination with the DMM module to perform the DCI or ACI
measurement function. All the channels added into the scan list are break-before-make. In any case,
you cannot close multiple channels on this module.
MC3324 can be connected with MC3065 (the DMM module, if MC3065 is currently inserted).
MC3324 is as shown in the figure below.
Figure 17 MC3324
M3TB24 is an external terminal block applicable to MC3324. Its appearance and detailed layout are
as shown in the figure below. The 24 pairs of connecting terminals correspond to the 24 channels of
MC3324 respectively. The connecting terminals can be recognized via the labels (CH01 to CH24)
below or above them. Wherein, CH01 to CH20 are voltage channels and CH21 to CH24 are current
channels.
Figure 18 M3TB24