Bio-Rad BioLogic Signal Import Module (SIM) User Manual
Page 63
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2.9.6
Signal Import Module (SIM)
The Signal Import Module digitizes an analog signal and transmits it to the DuoFlow Controller. It is used to
import signals from non Bio-Rad detectors into the DuoFlow software.
•
The SIM allows for connection of any pH probe and detector that outputs an analog signal between
-2.5 Volts to +2.5 Volts. Instruments that may be connected in this way could include a variable
wavelength UV detector, a refractive index detector, or a fluorescence detector.
•
Two SIMs may be connected to a DuoFlow system.
Figure 2-29. Signal Import Module (front and rear views)
The output from a pH electrode is connected to the pH connector (a BNC connector) on the SIM; the output
from any other detector is connected at the 3-pin connector (+, -, gnd) of the SIM. The Automatic
Temperature Compensation (ATC) connector is reserved for future upgrades and enhancements.
The instrument bus cable connects the SIM to the USB Bitbus Communicator. (Refer to Figures 2-29 and
2-30.) If a second SIM is to be used, one of the instrument bus cables is used to connect the two SIMs. The
SIM is described in detail in its separate documentation. When a SIM is connected to the instrument bus,
the USB Bitbus device must be connected to an external powersource (see Section 2.1.2).
Figure 2-30. Cable Connections to the Signal Import Module
DEVICE
NUMBER
INSTRUMENT BUS
POWER/
STATUS
TO USB BITBUS
COMMUNICATOR
TO USB BITBUS
COMMUNICATOR
CONNECTING A SINGLE SIM
CONNECTING TWO SIMs
DEVICE
NUMBER
INSTRUMENT BUS
POWER/
STATUS
DEVICE
NUMBER
INSTRUMENT BUS
POWER/
STATUS
CONNECTION TO THE
FOLLOWING DEVICES
(LISTED IN SEQUENCE):
• MAXIMIZER (IF AVAILABLE)
• WORKSTATION
TO WORKSTATION
DEVICE
NUMBER
INSTRUMENT BUS
POWER/
STATUS
ANALOG
ATC
pH
IN(+) IN(-) GND
DESCRIPTION OF SYSTEM COMPONENTS
SYSTEM OVERVIEW
2-50