Teledyne LeCroy TF-DSQ - Manual (Page 16)

Operator's Manual
16 TF-DSQ-OM-E RevC
P
ROBE
D
ESKEW
I
NFORMATION
The probe deskew information contains the measured skew between the probe in the specified
channel and the reference channel. It can be entered manually or as the result of an automatic
calibration. In the case of automatic calibration, it can be the result of a portion of the
full
calibration -1427781181 or it can be the result of a standalone deskew calibration . Even after the
deskew has been performed automatically, the deskew correction can be tweaked manually.
C LEAR
All probe calibrations can be cleared by pressing this button corresponding to a probe.
P
ROBE
C
ALIBRATION
S
OURCE
This specifies the signal source used for DC and skew calibrations. When the TF-DSQ fixture is
plugged into an oscilloscope input, the oscilloscope automatically specifies this fixture as the
calibration source.
S
KEW
R
EFERENCE
This specifies the channel or external input where the skew reference is supplied. The skew
reference is the absolute time reference to which all deskew measurements are made. When
the TF-DSQ fixture is plugged into an oscilloscope input, the oscilloscope detects this and
automatically shows the front panel connection of the fixture.
R ECALL C ALIBRATION
Whenever a probe calibration is applied, the oscilloscope saves the information in a file on the
disk. If the oscilloscope must be rebooted for any reason, the probe calibration information is
always cleared, but can be manually recalled by pressing this button.
A DVANCED M ODE C HECKBOX
When the Advanced Mode checkbox is unchecked, you have access to the basic probe
calibration menu . The basic probe calibration menu shows you only what is absolutely needed
to perform a simple calibration of the probes. In other words, it shows you the calibration
information and provides the capability to calibrate the probe with a single button press, clear
the calibration information, and manually reload the calibration information following an
oscilloscope reboot. When the advanced mode button is checked, you have access to the
advanced mode probe calibration menu .