eDAQ Picostat, Руководство пользователя

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96 eDAQ Potentiostats
• Try using the Potentiostat, Picostat, or Quadstat with another
e-corder (if available). If the Online indicator fails to light on the
second e-corder , the Potentiostat, Picostat, or Quadstat, may be
faulty — contact eDAQ. If it works correctly on a second e-corder
then the first e-corder may be faulty — contact eDAQ.
The ‘Potentiostat’, ‘Picostat’, or ‘QuadStat’ controls cannot be accessed
in Chart, Scope or EChem software (that is only the standard ‘Input
Amplifier’ dialog box of the e-corder can be accessed)
• Check that the Online indicator is illuminated after the software
has been opened. If not, then proceed as in the previous problem.
• Check that you have connected the ‘E In’, ‘I Out’ and ‘E Out’
cables correctly to the appropriate
e-corder connectors.
The Overload indicator is on (a potential overload has occurred).
• Check that the electrode cables are firmly attached to the
electrodes.
• Check that the surfaces of the electrodes have not become fouled.
• The Picostat or QuadStat Overload indicators may come on when
the software is started — this is normal. The Overload indicator light
should go out when you open the Picostat or QuadStat controls, or
start recording.
• See page 8 , page 28 or page page 43 for more details.
The current signal goes off scale.
• Increase the full scale current range setting.
• Make sure each electrode is connected to the correct lead wire,
page 7 , page 27, or page 43 .
• Make sure the electrodes (and the alligator clips connecting them
to the lead wires) are not touching each other.
• Decrease the surface area of your working electrode.
• Decrease the concentration of the background electrolyte.
• Decrease the concentration of the substrate.
• Check that a potential overload (see previous section) has not
occurred.