Keysight Technologies E2655C, Руководство пользователя

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14 E2655C Probe Deskew and Performance Verification Kit User’s Guide
Calibration for Hand-held Browser Probe Heads
Calibration of the hand-held browser probe heads consists of a vertical calibration
and a skew calibration. The vertical calibration should be performed before the
skew calibration. Both calibrations should be performed for best probe
measurement performance.
Calibration Setup
The calibration procedure requires the following parts.
• BNC (male) to SMA (male) adapter
• Deskew fixture
• 50
Ω
SMA terminator
For the following procedure, refer to Figure 7 .
1
Connect BNC (male) to SMA (male) adapter to the deskew fixture on the
connector closest to the pincher.
2
Connect the 50 Ω SMA terminator to the connector farthest from the pincher.
3
Connect the BNC side of the deskew fixture to the Aux Out of the Infiniium
oscilloscope.
4
Connect the probe to an oscilloscope channel.
5
Place the positive resistor tip of the browser on the center conductor of the
deskew fixture between the green line and front end of the pincher. The
negative resistor tip or ground pin of the browser must be on either of the two
outside conductors (ground) of the deskew fixture.
6
On the Infiniium oscilloscope in the Setup menu, select the channel connected
to the probe.
7
In the Channel Setup dialog box select the
Probe Config...
button.
8
In the Probe Configuration dialog box select the
Calibrate Probe...
button.
9
Select the
Start Atten/Offset Calibration...
button and follow the on-screen
instructions for the vertical calibration procedure.
10
Once the vertical calibration has successfully completed, select the
Calibrated
Skew...
button.
11
Select the
Start Skew Calibration...
button and follow the on-screen
instructions for the skew calibration.
NOTE
Before calibrating the probe, verify that the Infiniium oscilloscope has been calibrated recently
and that the calibration
Δ
temperature is within ±5 °C. If this is not the case, calibrate the
oscilloscope before calibrating the probe. This information is found in the Infiniium Calibration
dialog box.