Acquisition
This section contains concepts of and procedures for using the acquisition system.
Signal path compensation
Perform the Signal Path Compensation (SPC) regularly to ensure that your measurements have the highest level of accuracy.
Tektronix considers it a best practice to run SPC when using the instrument to measure signals with higher sensitivity (10 mV/div
and lower) settings regardless of temperature shift or time since it was last run. Failure to perform SPC may result in the
instrument not meeting warranted performance levels.
SPC corrects for DC inaccuracies caused by temperature variation or by long-term drift. SPC optimizes the acquisition system,
corrects DC offset, and interleave calibration. SPC is adversely affected by input signals with AC components.
Use this procedure to optimize the acquisition system:
■
If the temperature has changed more than 5 °C (9 °F) since the last signal path compensation (SPC)
■
If using the instrument to measure signals with higher sensitivity (10 mV/div and lower) run SPC at least once a week
■
If the front panel SPC status icon is not green
■
If you replace or insert drive media
■
If you change the configuration of your multi-instrument system, such as changing which instrument is the master or an
extension.
1. Prerequisites:
■
Instrument must be powered on until
Utility > Instrument Calibration >
Temperature Status is Ready.
■
All channel input signals must be
removed.
■
If the timebase external reference
mode is selected, leave the external
reference signal connected and
active.
DPO70000SX Series User 43
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