Advanced Technical Topics

Beyond Basic Setup

USB Issue in Interface 1000 Potentiostat

Posted on 18 February 2015

If you recently purchased a Gamry Interface 1000 Potentiostat and are experiencing a problem connecting it to a computer, your computer may have the Intel USB 3.0 eXtensible Host Controller driver installed. Please read on for some background and workaround.

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Bad or Unresponsive USB Connection with Potentiostat

Posted by Dan Cook on 11 December 2014

Occasionally a Reference or Interface potentiostat will be plugged into a computer’s USB port and will not be detected. Initially this may lead one to believe the USB communications on the instrument may have failed, and a repair is necessary. However, it may be due to a computer setting known as “USB Selective Suspend Feature”, which may be turned on as a power saving setting in Windows. It is recommended to take the following steps to help determine the source of the USB communications failure.

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Custom Scripting with the EXPLAIN Scripting Language

Posted by Aaron on 12 March 2014

The flexibility of Gamry’s Framework software is largely due to its foundation built around the EXPLAIN scripting language.  All of the experiments run in Framework are Gamry Softwarewritten in EXPLAIN and the source code is available to the user for modification.  Working with the scripting language is not difficult, but some computer programming experience, and especially experience with object-oriented languages, will be most beneficial.  The following documents can assist the user with making some basic modifications to the scripts.  A comprehensive syntax guide is built into the Framework software under the Help resources.

Customizing Electrochemical Experiments with EXPLAIN

Commonly Requested Changes to EXPLAIN Scripts

Programming Reference for EXPLAIN

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My TDC4 displays the warning "tOPN" even with the probe connected

Posted by Aaron on 2 November 2012

The following steps should be taken if your TDC4 displays "tOPN" even with the probe connected.

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TDC4 Port Number Change

Posted by Aaron on 18 September 2012

Step-by-step Instructions for Changing Your TDC4 COM port Number.  Applies to Framework software version 4.35 to 5.XXstart control panel

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Field Powering Your USB Potentiostat

Posted by Aaron on 17 September 2012

Interface 1000 back panelA number of users bring potentiostats into the field and need a reliable source of short term power for experiments.  All of our USB potentiostats run from 120V AC wall outlets, but with varying power requirements.

An AC power inverter is required to run the potentiostat from automotive or marine batteries.  Gamry has not tested specific inverter products, but generally a unit that can supply 750 watts continuous will be able to run the instrument.  Products by Tripp-Lite, such as those from the POWERVERTER Series are designed for heavy-duty operation connecting directly to an automotive battery.  Marine batteries, however, are designed for deep cycle operation and are better suited for longer use of the potentiostat in the field.  Always use the power transformer block and cable that came with your USB instrument.  Damage could result from connecting any power source directly to the back of the potentiostat.

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OptiEIS: Signal optimization takes too long or chooses wrong range

Posted by Aaron on 9 November 2011

opti eisThe signal optimization step of the OptiEIS experiments can take (at a minimum) as long as 2 cycles of the minimum frequency entered during setup.  During this step the current measurement range of the potentiostat is selected based on the amplitude of the signal.  The "Max Current" box of the setup screen determines the initial current measurement range used during optimization.  The optimization can take much longer, by multiple attempts at signal optimization, if the Max Current is too low, as it has to switch to the next range up and reattempt.  The best method is to make an educated guess of the maximum current value with some knowledge of the impedance of the sample.

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Using “vs. OCP” for Potentials Set in the Sequence Wizard

Posted on 24 October 2011

The Sequence Wizard includes steps to produce many of the same experiments that you can access from the main Experiment menu.

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Measuring Time Lag in Sequence Wizard

Posted on 24 October 2011

Experimental steps can be sequenced together using the sequence wizard, including digital out events to trigger external equipment. However, there is a small amount of setup gamry sequence wizardlag time between the end of one sequence step and the start of the next.

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Using the Multiplexer Setup Script

Posted on 24 October 2011

In addition to controlling up to eight electrochemical cells in sequence, the ECM8 also has local potentiostats on each channel.

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