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On/Off switch (1)When the potentiostat is powered, the red pilot lamp is on.Analog outputs (“I OUT” and “E OUT”) (2)Two analog outputs are available to record current and voltage. These 2 BNC typesockets can be connected, for example, to a recorder, a plotter or an oscilloscope.These 2 BNC sockets have a very low output impedance (~ 0 Ohm). Do not outputmore than 1 mA at these sockets (~10 kOhm load).The “I OUT” socket gives an image of the current measured at the electrodes(auxiliary electrode circuit). The voltage output at the central contact of this socketis a linear signal ± 1 V giving the image of the current measured. ± 1 V correspondsto the selected current range value.Example: with the ± 10 mA range:Current imposed or measured by the PGZ+10 mA +1 V+5 mA +500 mV-2 mA -200 mV-10 mA -1 VVoltage output by “I OUT” socketThe “E OUT” socket gives the voltage measured between the “WORK.” (or“SENSE”) and “REF.” terminals of the PGZ potentiostat. The voltage is output at thecentral contact of that socket and the socket shielding is connected to the analogelectrical zero of the potentiostat.Analog input (“Vg IN”) (3)This BNC type socket is to be connected to an external signal generator. Inpotentiostatic mode, the potential of the generator must be less (in absolutevalue) than 10 V (*). In galvanostatic mode, the potential of the generator must beless than 1 V in absolute value irrespective of the current range selected on thepotentiostat (**). The use of an external signal generator is described in Chapter6. The socket central contact corresponds to the input signal and the socketshielding is connected to the electrical zero. This socket has an input impedance of10 kOhm.(*) The algebraic sum Vg imposed by the potentiostat and Vg imposed by the externalgenerator must be less than 15 V in absolute value.(**) The algebraic sum potential imposed by the potentiostat and potential imposed by theexternal generator must also be less than 1 V in absolute value.VoltaLab 21/06/10/40/50/80 115Section 5, Chapter 1: The PGZ and PST series