Справочник Пользователя для Tektronix P6249
Operating Basics
P6249 4 GHz 5X Active Probe Instruction Manual
21
1
2
3
1000
900
800
700
600
500
400
300
200
100
0
Measurement lead length (Inches)
Frequency
(MHz)
1.2
1.4
1.6
1.8
2.2
2.4
2.6
2.8
Figure 4: Maximum frequency vs. measurement lead length
In order to reach two test points with a P6249, a 2-inch length return
ground lead is used. What is the maximum circuit frequency which
should be measured?
ground lead is used. What is the maximum circuit frequency which
should be measured?
Using the graph shown in Figure 4 as a guide, a 2-inch lead length
yields a 500 MHz maximum frequency.
yields a 500 MHz maximum frequency.
The low-inductance ground contacts described in Accessories on
page 5 can help you reduce the effects of ground lead inductance on
your measurements.
page 5 can help you reduce the effects of ground lead inductance on
your measurements.