eDAQ e-corder, Руководство пользователя, Страница: 50 / 112

46 eDAQ Potentiostats
The grounding connector is equivalent to the COM pins of the 20 pin
terminal socket,
Figure 4–2 .
Connecting the QuadStat
Your QuadStat will have been supplied with an I
2
C cable (DB–9 pin
connectors at either end), and nine cables with BNC connectors at one
end and bare wires at the other.
First make sure that the
e-corder
is turned off. Then connect the I
2
C
cable to the I
2
C connector on the back panel of the e-corder , and the
other the other end to the I
2
C Input connector on the back panel of the
QuadStat.
The QuadStat provides two signals per channel: the potential signal
(E Out) indicating the potential difference between the working and
reference electrodes; and the current signal (I Out) indicating the
current flow between the working and auxiliary electrodes. Use the
BNC cables, with bare wires at one end, to connect the terminal strip
(
Figure 4–3 ) as described in Figure 4–2 and Figure 4–5 or Figure 4–6 .
Note there are several possibilities depending on how many of the
QuadStat channels you wish to use and whether you require the use of
the
e-corder Output, or an external waveform generator.
For experiments where the working electrode potential is held constant
(between ±2.5 V) the E In pin positions are unused,
Figure 4–5 . If the
electrode potential required is greater than ±2.5 V, or is to be pulsed or
ramped during the experiment, then the E In input must be connected to
a suitable external signal, such as from the Output of the
e-corder , or a
waveform generator, Figure 4–6 . If an
e-corder
is used, then normally
QuadStat rear panel e-corder front panel
I Out (Ch 1, Ch 2, Ch 3, Ch 4) Input 1, 3, 5, 7
E Out (Ch 1, Ch 2, Ch 3, Ch 4)* Input 2, 4, 6, 8
E In †
‡
* It is not always necessary to monitor E Out depending on your experimental requirements.
†
Connections to E In are only required if using an external waveform to control the applied
potential.
‡
Use Output – to send a signal of reverse polarity to the QuadStat.
Table 4–2
QuadStat to e-corder
BNC connections. See
Figure 4–7 for actual
appearance.