Appendix B: Interface 1000 Cell Connector - Gamry Instruments Interface 1000 Operator's Manual

Appendix B: Interface 1000 Cell Connector--Floating Operation

Appendix B: Interface 1000 Cell Connector

Chapter 4 describes the connections between a cell cable and an electrochemical cell. This appendix
describes the other end of the cell cable.
Multiple pins assigned to the same signal are connected together on the Interface 1000's Potentiostat
board. If you need to connect this signal outside the Interface 1000, you need a wire connected to any
one of the D-connector pins.
Pin(s) Signal Name
1 Working Sense
2, 14 WS Shield
3, 4, 15, 17 Reference
Shield
5, 7, 10, 11, Ground
18, 19, 22,
24
6 Counter Sense
8 CBL_ID1
9 CBL_ID2
12, 25 Working
Shield
13 Working
Electrode
16 Reference
Electrode
20 CBL_ID0
21 CBL_ID3
23 Counter
Electrode
Designing cell cables for a 1 MHz potentiostat is not a trivial task. Gamry Instruments does not
recommend user-designed cables (except as a last resort). In many cases we can build a custom cable to
meet your specific needs. We'll also be happy to discuss your cable requirements and give you assistance if
you must design and build your own cell cable.
Table B-1
Cell Connector
Use
Connected to the working electrode in most cases (see Chapter 4). This lead
has a 261 Ω resistor in the cell end of the cable. Custom cell cables are likely
to require a similar resistor.
The shield for the working-sense input. Driven to the same potential as Pin 1.
Left open at the cell end of the cell cable.
The shield for the reference electrode input. Driven to the same potential as
Pin 16. Left open at the cell end of the cell cable.
The potentiostat's floating ground. Can be used to shield the cell if very low
currents need to be measured. Also used as a shield for the counter electrode
cable.
With an Interface 1000, used to sense the potential of the counter electrode.
Allows accurate ZRA mode even with significant cell current through counter
lead's resistance.
One of four cable-ID bits. Used to identify the type of cell cable attached to
the unit. Pull to a logic High through a resistor. Ground to set the bit low.
One of four cable-ID bits. Used to identify the type of cell cable attached to
the unit. Pull to a logic High through a resistor. Ground to set the bit low.
The shield for the working electrode input. Connected to Floating Ground.
Left open at the cell end of the cell cable.
Connected to the working electrode. The cell current flows through this pin.
Connected to the reference electrode in most cases (see Chapter 4). This
lead has a 261 Ω resistor in the cell end of the cable. Custom cell cables are
likely to require a similar resistor.
One of four cable-ID bits. Used to identify the type of cell cable attached to
the unit. Pull to a logic High through a resistor. Ground to set the bit low.
One of four cable-ID bits. Used to identify the type of cell cable attached to
the unit. Pull to a logic High through a resistor. Ground to set the bit low.
Connected to the cell's counter electrode. The cell current flows through this
connection.
Appendix B - 1