Reference
Key Points
Signal Path Com
pensation. For maximum accuracy at any time, run the SPC
routine just before taking critical measurements. To meet accuracy specifications,
run the routine if the ambient temperature changes by 10 °C (18 °F) or more.
Before running the routine, disconnect any probes or cables from the channel
inputs. Then, push the Signal Path and the OK Compensate Signal Path screen
buttons to confirm that you are ready to proceed. The routine takes several
minutes to complete. (See page 4.)
Factory Cal. Service personnel use these functions to calibrate the oscilloscope
internal voltage references using external sources. Refer to your Tektronix field
office or representative for assistan ce with these processes.
Cal Due Control. The calibration due notificationoccursonlyinthepower-on
screen. Set the controls to ∞ if you do not want to be notified when calibration is
due.
Diagnostic System
Use the System Diags menu to access these functions.
Bottom Side Description
System
Diags
Execute
Starts diagnostics.
Once
Executes the diagnostic loop
once.
Always Executes the diagnostic loop
continuously.
Loop
Until Fail
Executes until a failure occurs.
Page Up Use to see the previous error log
page.
Error Log
Page Down Use to see the next error log
page.
Key Points
Starting Diagnostics. To execute the built-in diagnostic routines, disconnect all
cables or probes from the oscilloscope inputs, and then push the OK Run Test
screen button.
Stopping Diagnostics. Choose how you want the diagnostic routines to execute:
Loop Once runs all diagnostic routines one time and then stops.
Loop Always runs the diagnostic routines continuously. Push the Run/Stop
and then the Menu Off buttons to resume normal operation.
Loop Until Fail runs the diagnostic routines until the oscilloscope fails a test
or until you cycle the power.
TDS3000C Series Oscilloscope User Manual 113
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