Gamry Instruments Interface 1010 Operator's Manual page 80

I/O Connectors
The signal generator output is directly connected to the potentiostat's input. When the cell is turned on in
potentiostat mode, the feedback is such that a negative signal-generator output creates a positive differential
electrometer signal, which corresponds to a negative working electrode versus reference electrode voltage.
The polarity of the External Signal In signal is inverted at the signal generator's output. As described above, a
negative input signal on this input will create a positive change in the working electrode versus reference
electrode voltage. The input impedance of this signal is 2 kΩ.
80