Technical data

46 7000 Series Oscilloscopes Service Guide
2 Testing Performance
To verify horizontal delta t accuracy
This test verifies the horizontal ∆t accuracy. In this test, you
will use the oscilloscope to measure the output of a time mark
generator.
Test limits: ±0.0015% of reading ±0.1% of full scale ±20 ps (same
channel)
1 Connect the equipment:
a Connect the calibrator output to the oscilloscope channel
1 input.
2 Set up the signal source.
1 Select Marker on the oscilloscope calibrator.
2 Set the calibrator for 100 µs markers (period = 100 µs).
3 Set up the oscilloscope.
a Set channel 1 Coupling to DC.
b Set channel 1 Imped to 50 Ohm.
c Press the Display key, then set the Vectors softkey to off.
d Press the AutoScale key.
e Set the time base to 20 µs/div.
f Press the Menu/Zoom key, then set the Time Ref softkey to
Left.
g Adjust the Trigger Level knob to obtain a stable display.
Table 10 Equipment Required to Verify Horizontal ∆t Accuracy
Equipment Critical Specifications Recommended
Model/Part
Oscilloscope
Calibrator
Stability 5 ppm after 1/2 hour Fluke 5820A
Cable BNC, 3 feet Agilent 10503A
7000 service guide.book Page 46 Thursday, October 16, 2008 12:18 PM