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NOVA External devices tutorial
If an electrochemical signal is linked to the Input reference signal parameter of the
Avantes close command and if an Input reference signal step is provided, the Output
reference signal will be added to the spectroscopic data. This signal will contain
every nth point of the Input reference signal, where n is the value specified for the
Input reference signal step parameter.
Figure 84 shows an example of spectroelectrochemical data obtained using a
procedure similar to that of Figure 83. The overlay consists of a series of spectra
recorded at different potential values during a linear sweep voltammetry
experiment.
Figure 84 – Example of spectroelectrochemical measurements
3.3.3 – Spectrum triggering
To trigger the acquisition of a single spectrum on an initialized Avantes
spectrometer, a TTL pulse needs to be sent by the Autolab to the spectrometer.
Depending on the type of Autolab used, the triggers are sent by different pins.
1. For the PGSTAT101, PGSTAT204, M101 and M204 module: the TTL
trigger is sent by pin #1 on the DIO12 connector (with respect to the digital
ground embedded into the DIO connector). A dedicated cable is available for
these Autolab instruments, preconfigured for the correct digital control of
the Avantes spectrometer.
2. For all the other Autolab instruments (except the PGSTAT302F): the TTL
trigger is sent by pin #1 of Port A of either one of the DIO connectors located
on the instrument. A dedicated cable is available for these Autolab
instruments, preconfigured for the correct digital control the Avantes
spectrometer.
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