eDAQ e-corder, Manual

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8 eDAQ Potentiostats
E Out, I Out and E In Connectors
The Potentiostat back panel has three BNC connectors labelled E Out,
I Out, and E In. The E In is connected to the Output of the
e-corder
,
usually is used.Reverse the polarity of the Potentiostat by using
e-corder
Output –.
The Potentiostat provides two signals: the current signal (I Out)
indicating the current flow between the working and auxiliary
electrodes, and the potential signal (E Out) indicating the potential
difference between the working and reference electrodes. Note that the
E Out signal is inverted with respect to the applied potential.
For most situations I Out is connected to
e-corder
input channel 1, and
E Out to e-corder input channel 2. However, when you are using Chart
software and recording data from various sources on more that just two
channels you may want to connect the Potentiostat to other
e-corder
input channels.
I
2
C Connectors
The Potentiostat back panel, Figure 2–3 , has two DB-9 pin ‘I
2
C bus’
connectors labelled Input and Output. The Input connector provides
power to the Potentiostat and carries the various control signals (for
gain range and filter selection) to and from the
e-corder . A cable is
provided with the Potentiostat for this purpose. The pin assignments are
shown in
Figure 2–4 .
The Output connector can be used for the attachment of other eDAQ
Amps.
More information about the I
2
C connector can be found in your
e-corder Manual .
Grounding Connector
The Potentiostat back panel, Figure 2–3 , has a 4 mm grounding socket.
This enables connection of a Faraday cage (with the green grounding
cable included with the Potentiostat) the use of which can greatly
diminish electrical noise. The Potentiostat is supplied with a green
WARNING!
The I
2
C connectors are
for the power and
control of
eDAQ
Modular Potentiostats,
page 2
, and should not
be used for connection
to any other device.