eDAQ Picostat, User Manual

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50 eDAQ Potentiostats
When using EChem software, e-corder Input 1 is always set to be the
current signal (the I channel), and e-corder Input 2 is automatically set
to be the potential signal (the E channel). Thus when using EChem
software connect the QuadStat Channel 1 current signal (I Out) to
e-corder Input1, and the QuadStat Channel 1 potential signal (E Out) to
e-corder Input 2. Other QuadStat channels remain unconnected.
To record the applied potential signals (E Out) of a QuadStat with
Chart and Scope software, first configure the settings of the standard
Input Amplifier dialog box, described in the
Chart and Scope Software
Manuals .
Using a Common Reference and Auxiliary
Often the QuadStat will be used with a single reference electrode, RE,
and a single auxiliary electrode, AE, (on QuadStat channel 1) with
multiple working electrodes (WE) on some, or all, of the other QuadStat
channels. To monitor the applied potential signal for Channels 2–4
then, on each channel with a working electrode, connect the unused AE
and RE sockets together. You can use the extra AE and RE lead wires
supplied with the QuadStat, connecting the alligator clips to one
another, for this purpose, see
Figure 4–8 .
If the unused AE and RE sockets on Channels 2–4 on the front panel of
QuadStat remain unconnected (as shown in
Figure 4–7 ) then:
• the applied potentials can be still adjusted as described below;
Channel 2 Channel 4 Channel 3 Channel 1
164
QuadStat QuadStat
RE RE RE
AE AE AE AE
Channel 1 auxiliary,
reference and working leads
to be connected to AE, RE,
and first WE Channel 2 auxiliary and
reference leads connected
together
Channel 2
working lead to
be connected to
second WE
Figure 4–8
Correct use of two
channels with a common
auxiliary and reference
electrode. The auxiliary
and reference leads of
channel 2 are joined
together.