Keysight Technologies InfiniiVision 2000, Service Manual

Page: 35 / 86

Testing Performance
2
2000/3000 X-Series Oscilloscopes Service Guide 35
To verify dual cursor accuracy
This test verifies the dual cursor accuracy for each analog channel.
This test is similar to the test for verifying the DC vertical gain, except you will
measure the dc voltage output of a precision source using dual cursors on the
oscilloscope and compare the results with the multimeter reading.
Dual cursor accuracy test limits: ±[DC vertical gain ac 0.5% full scale]
For the DC vertical gain accuracy test limits, see Table 6 on page 28.
1 Press [Save/Recall] > Default/Erase > Factory Default to recall the factory default
setup.
2 If you are testing a 2000 X-Series oscilloscope, set the probe attenuation to 1:1
on the analog channel you are testing (for example, [1] > Probe > Probe ; then,
turn the Entry knob to select 1.00 : 1 ).
3 Set up the oscilloscope.
a Set the Volts/Div setting to the value in the first line in Table 11 or Table 12
(depending on the oscilloscope model).
b Adjust the channel 1 position knob to place the baseline at 0.5 major division
from the bottom of the display.
Table 10 Equipment Required to Verify Dual Cursor Accuracy
Equipment Critical Specifications Recommended Model/Part
Precision Source DC voltage of 7 mV to 35 V, 0.1 mV resolution Keysight B2912A/B2962A
Digital multimeter Better than 0.01% accuracy Keysight 34401A/34461A
50
Ω
BNC Cable (qty 2) BNC - BNC, 48” length Keysight 8120-1840
Adapter (qty 2) BNC (f) to banana (m) Keysight 1251-2277
BNC Tee BNC tee (m) (f) (f) Keysight 1250-0781 or Pomona 3285
Shorting cap BNC Keysight 1250-0774
Blocking capacitor Note: if a BNC blocking capacitor is not available use
an SMA blocking capacitor.
Keysight
Pomona 4289 +
Pomona 5088