Chapter 5 -- Panel Indicators and Connectors--Rear Panel
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User I/O Connector
The User I/O connector contains digital signals used to interface external devices to the Interface 1000. All of
its signals are referenced to earth ground so their connection does not compromise the Interface 1000 ground
isolation.
A full description of this connector can be found in Appendix C of this manual. This appendix includes details
such as connector pin-out, output and input voltage levels and full signal descriptions.
The following list is a short description of the signals in the User I/O Connector and their uses:
• Four digital outputs can be used to turn on external devices under control of an Explain experimental
control script.
• Some of Gamry applications assign three of the digital outputs to control stirring, flow of de-aeration
gas, and formation of mercury drops on a mercury drop electrode.
• Four digital inputs that can be read in an Explain experimental control script.
• This connector includes a 5 volt power supply that can provide up to 50 mA of current for external
circuitry.
Caution
Floating operation of Interface 1000 can be compromised by improper cabling to the
User I/O Connector. We do not recommend use of standard 15-pin shielded cables with
this connector. Custom cables with the shield connected to pin 6 of the D-connector are
preferred.
Sync Port
The Sync Port is used when several Interface 1000 instruments need to be operated with a common clock and
simultaneous data acquisition. It is an 8-pin mini-DIN connector.
Simultaneous operation is only required when several instruments are connected to a single electrochemical
cell. Examples include rotating ring-disk voltammetry, series flow cells, localized EIS systems, and
electrochemical microscopy. In these examples, data acquisition starts and stops on all the system’s
potentiostats simultaneously and any excitation signals are closely coupled to data acquisition.
Simultaneous operation is generally not required when instruments are connected to different electrochemical
cells. A good example is parallel testing of batteries. You might want to start a number of tests simultaneously,
but the tests need not remain synchronous and they can end independently.
A full description of the Sync Port can be found in Appendix C of this manual.
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