Measuring Waveforms
3–108 TDS 684A, TDS 744A, & TDS 784A User Manual
When you install a probe or power on the oscilloscope with probes installed, the
oscilloscope tests the probe at each input. Depending on the probe it finds on
each input, it takes one of the following actions:
If the probe has a TEKPROBE interface (such an interface can convey
additional information, such as a unique identification number), the
oscilloscope determines whether it is the same probe for which data was
stored. If it is, the oscilloscope sets status to pass; if not, it sets the status to
Initialized.
If a probe has a simple oscilloscope interface, the oscilloscope can usually
determine if it has a different probe attenuation factor than that stored for the
last Probe Cal. It can also determine if the last Probe Cal was for a probe
with a TEKPROBE interface. If either is the case, the probe installed is
different from that stored for the last Probe Cal. Therefore, the oscilloscope
sets the status to Initialized.
If a probe has a simple oscilloscope interface and the probe attenuation factor
is the same as was stored at the last Probe Cal, the oscilloscope cannot
determine whether it is the same probe. Therefore, it displays the Re-use
Probe Calibration data? menu. (See Figure 3–64.)
Figure 3–64: Re-use Probe Calibration Data Menu