Signal path compensation SPC
Signal Path Compensation (SPC) corrects for DC level inaccuracies in the
internal signal path caused by temperature variations and/or long-term signal path
drift. You should run the SPC whenever the ambient (room) temperature has
changed by more than 10 °C, or once a week if you use vertical scale settings of
5 mV per division or less. Failure to run a SPC may result in the oscilloscope not
meeting warranted performance levels at those volts per division settings.
To compensate the signal path for all channels:
1. Power on and warm up the oscilloscope for at least 20 minutes.
2. IMPORTANT: Remove all input signals (probes and cables) from channel
inputs and the Aux Out connector on the back of the oscilloscope.
3. Push Utility.
4. Push the -More- Page 1/2 side-menu button.
5. Push the Calibration side-menu button.
6. Turn the Multipurpose knob to select Signal Path, then click the
Multipurpose knob to start the SPC process.
The oscilloscope shows a Signal Path Compensation information message.
7. Push the Compensate Signal Paths side-menu button to start the process.
The screen shows rotating dots while the SPC is run. The oscilloscope
displays a message when the SPC is complete. SPC can take several minutes
to run, so wait until the oscilloscope shows a message that SPC is
completed.
8. Push Menu Off to remove the message and menus.
9. Reconnect probes to the oscilloscope.
Getting acquainted with the oscilloscope
32 TBS2000B Series Oscilloscopes User Manual
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