10
pH/mV Amp
Multiple eDAQ Amps can be connected to an
e-corder
. The number
that can be connected depends on the number of input channels on the
e-corder
. The initial eDAQ Amp should be connected as shown in
Figure 2–4
. The remainder are linked via I
2
C cables, connecting the
I
2
C output of one eDAQ Amp to the I
2
C input of the next, as in
Figure
2–5
. The signal outputs of each eDAQ Amp are connected to an input
channel of the
e-corder
.
The pH/mV Amp Self Test
After you have installed the software, connected the
e-corder
to a
computer as described in your
e-corder Manual
, and connected the
pH/mV Amp as described above, a quick check can be performed on
the pH/mV Amp:
• Turn on the e-corder and check that it performs its normal
diagnostic tests, as described in the
e-corder Manual
• Once the e-corder is ready, open Chart or Scope.
• During initialization, you should see these indicators flash briefly
and then remain lit — the pH/mV Amp is ready for use.
If the indicators do not light, check your cable connections and repeat
the procedure,
Appendix B
. If this does not solve the problem, contact
your eDAQ distributor. Note, If only the pH Output is connected (as
shown in
Figure 2–4
), then the Temperature online indicator will not
light, and vice versa.
Using Chart and Scope
Setting up the pH/mV Amp
When the pH/mV Amp is connected to an e-corder input and
successfully installed, the pH Amp… menu command appears in the
Chart software Channel Function pop-up menu,
Figure 2–6
. In Scope
software, the
button appears in the Input A (or
Input B) panel, see
Figure 2–6
.
If the application fails to find the pH/mV Amp, the normal Input
Amplifier… command or button remains. If you were expecting a
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