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Chapter 2: Probing and Selecting the Sampling Mode
Probing the Device Under Test
If the clock input is a single-ended signal, either ground the negative
clock input and adjust the clock threshold voltage in the user interface,
or connect the negative clock input to the DC clock threshold
reference voltage.
In the user interface, the clock input threshold voltage adjustment is
separate from the data input threshold voltage adjustments.
See Also “To set pod threshold voltages” on page 58
“To set clock threshold voltages” on page 59
For complete information, including mechanical considerations such as
pin-out and footprint and electrical considerations such as circuit board
design best practices, refer to the Agilent Technologies E5378A, E5379A,
and E5380A Probes for the 16760A Logic Analyzer user's guide that
comes with the probes.
Using the E5379A Differential Probe
The E5379A differential probe has 17 channels and is capable of
capturing data at rates up to 1500 Mb/s. The probe has the following
inputs:
• 16 differential data inputs.
• One differential clock input. The clock input can also be used as a data
input.
This probe matches one 17-channel probe cable to a differential 100-
pin Samtec connector. Two E5379A probes are required to support the
inputs on one 16760A logic analyzer card.
Mechanical
Considerations
Each E5379A probe requires a mating connector and support shroud
built into the device under test.
You can order a probing connector kit, which contains five mating
connectors and five support shrouds, using the Agilent part numbers:
• 16760-68702 for PC board thicknesses up to 0.062 in.
• 16760-68703 for PC board thicknesses up to 0.120 in.