Keysight Technologies InfiniiVision 6000 X Series, Service Manual

Page: 37 / 130

Testing Performance
2
6000 X-Series Oscilloscopes Service Guide 37
8 Press the Y2 softkey, then position the Y2 cursor to the center of the voltage
trace using the Entry knob.
The Δ Y value on the lower line of the display should be within the test limits of
Table 10 .
If a result is not within the test limits, go to the “Troubleshooting” chapter. Then
return here.
9 Disconnect the precision source from the oscilloscope.
10 Repeat this procedure to check the dual cursor accuracy with the remaining
Volts/div setting values in Table 10 .
11 Finally, repeat this procedure for the remaining channels to be tested.
Use a Blocking Capacitor to Reduce Noise
On the more sensitive ranges, such as 1 mV/div, 2 mV/div, and 5 mV/div, noise
may be a factor. To eliminate the noise, add a BNC Tee, blocking capacitor, and
shorting cap at the oscilloscope channel input to shunt the noise to ground. See
Figure 6 . If a BNC capacitor is not available, use an SMA blocking capacitor,
adapter, and cap. See “Blocking capacitor in the equipment list on page 19 for
details.
Figure 6 Using a Blocking Capacitor to Reduce Noise
To oscilloscope input
BNC shorting
cap
Blocking
Capacitor