User manual

ZD Series Differential Probes
ZDSERIES-GSM-REVA
14
Probe Calibration Fixture
The probe deskew fixture (PCF-200) is provided as a standard accessory with ZD500, ZD1000,
and ZD1500 probes.
The fixture can be used one of two ways:
1. The fixture may be used to determine the effect of probe input loading on the
circuit under test and verification of the probe response to the signal being measured.
2. The fixture may be used as a convenient way to deskew several
probes/oscilloscope channels. This can be accomplished in the following ways:
 Connect a fast edge to one or both inputs, and terminate the corresponding
connector. Connect the probe tip(s) to the appropriate connection point.
Solder-in probe tips and browser tips may be inserted under the clamping
mechanism. Display the probe signals on the oscilloscope screen and use the
channel deskew adjust to align them to a common point.
 Connect the WavePro 7 Zi and Zi-A or WaveMaster 8 Zi and Zi-A fast edge
output to one of the inputs. Set the Zi Series oscilloscope to trigger on the
internal Fast Edge source. Set the trigger delay to zero. Now, on the vertical
dialog, use the Probe Cal - Cable Deskew button to align one signal/channel at a
time to the specified zero delay trigger point (center of screen). Repeat for as
many probes as you have connected, each time aligning them to the common
point.