Multichannel Systems STG4004+STG4008 Manual - Manual (Page 17)

Operating the STG
13
STG and Stimulus Protocol Information:
Autocalibration
During the first ten minutes after starting the STG, the device emits every minute high frequency
signals (small bursts) for internal offset calibration of the current outputs in a range of +/- 10 mV.
After warming up the STG, the calibration signals later will be delivered half-hourly.
Note: It is recommended to start the STG ten minutes before use to allow warming up!
High sensitive measuring equipments will monitor these calibration signals as artefacts which
might disturb the stimulation when using very low stimulus pulses (< 100 μA) in current mode.
Enable the option “Disable Autocalibration” in STG main menu to avoid the autocalibration.
Download the command to the STG.