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Measuring Waveforms
3–150
TDS 500C, TDS 600B, & TDS 700C User Manual
Table 3–13: Probe cal status
be al
1
Uea i
Type probe connected
2
Pro
be
C
al
’d?
1
U
s
e
r
a
ct
i
on
Simple interface
3
TEKPROBE interface
4
No Doesn’t Matter Initialized Initialized
Yes Power off Initialized
(probe data is retained)
Initialized
(probe data is retained)
Yes Power on Can not detect differ-
ent probe:
Display Re-use Probe
Calibration Data menu
Cal’d Probe: Pass
Different probe: Initialized Different probe: Initialized
Yes Disconnect Probe Initialized Initialized
Yes Connect Probe Can not detect differ-
ent probe:
Display Re-use Probe
Calibration Data menu
Cal’d Probe: Pass
Different probe: Initialized Different probe: Initialized
1
Refers to a channel input that was successfully compensated at the time Probe Cal was last executed for the input channel.
2
If no probe is connected, the probe status in the vertical main menu is always initialized.
3
A probe with a simple interface is a probe that can convey very limited information to the oscilloscope. Most passive
probes (such as the P6139A) have simple interfaces.
4
A probe with a TEKPROBE interface is a probe that can convey additional information. For instance, it might automatical-
ly set the oscilloscope input channel impedance to match the probe, send the oscilloscope a unique probe identification
number, and so on. Some optical probes and most active probes (such as the P6205) have TEKPROBE interfaces.