Instrumentation GDD GRx8mini, Instruction Manual

Page: 42 / 141

Instrumentation GDD Inc. 2018-04-06 Page 42
11.
Click CONFIRM. The output signal of the self-test electrode will be activated only once you
have click on CONFIRM.
12.
Click START to begin the acquisition process.
13. It is important to disable the self-test output signal before starting a new acquisition
process to prevent any erroneous values caused by the noise induced by the internal
waveform generator. Go to Simulation window and enter 0mV in the Voltage field.
If you keep the default settings you should obtain the following results for all channels:
Vp ~= 500mV
M ~= 0.000
When you enter a VP of 500 mV in the self-test simulation mode, it is possible that the actual
voltage generated is 504, 505, 506 mV, etc. It does not mean that the channels are not working
properly. It would be a problem if the VP value is not the same during a reading for every
channel. For example, a value of 520mV for one channel while you get a value of 503mV for the
other ones.