MSI-9008 CellScale Multiplexer
•
User Guide
Page 9
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Connecting Two Multiplexers to CellScale with One A/D
To connect two Multiplexer units to a CellScale with one A/D input requires the digital control lines and excitation lines
be shared among the two MSI-9008 Multiplexers. The active signal output from the primary Multiplexer will be input to
the CellScale signal input one. The active signal output from the secondary Multiplexer will be input to the pass thru
connection on the primary Multiplexer; which intern, is connected to the CellScale channel two signal input.
For information about how to setup the CellScale scan list for this configuration, see the ”Software Setup” section.
Connecting Two Multiplexers to CellScale with Two A/D’s
When connecting two Multiplexers to a CellScale, the CellScale can control a maximum of eighteen load cells. This is
accomplished by connecting a Multiplexer with up to eight load cells to each CellScale input and a single load cell to the
second inputs on each ADC. The following diagram illustrates this.
This connection requires the use of the pass thru signal to be used for the channel two and channel four load cells. For
information about how to setup the CellScale scan list for this configuration, see the “ Software Setup” section.
Connecting Three Multiplexers to CellScale (Two A/D inputs required)
In order to connect three multiplexer units to a single CellScale, the CellScale will have to be equipped with the optional
second A/D input. This connection will allow two Multiplexers to connect to one A/D input and the third Multiplexer to
connect to the second A/D input on the CellScale. An additional load cell may be input directly to the CellScale on the
second channel input of the second ADC. The following diagram illustrates this.
The last load cell will be added to the CellScale scan list as channel four. For information about how to setup the
CellScale scan list for this configuration, see the “ Software Setup” section.
