Figure 5-6: Calibrating Cursor Readout For Checking Accuracy Of Collector Current Measurement - Tektronix 371B Service Manual

Performance Verification
5-52
NOTE. The accuracy of the vertical CURSOR readout is verified by forcing a
known voltage across load resistors in the Calibration Fixture using the
collector supply and reading the resulting calibrated current with the vertical
CURSOR.
1. Connect long patch cords between the Calibration Fixture and the voltage
source as shown in Figure 5–6.
2. Set the voltage source to 4.500 V and note the reading of the horizontal
CURSOR readout.
3. Set the voltage source output to 0 V and disconnect the long patch cords.
4. Connect the short patch cords and plug the two shorting bars over the
250 mW load resistor label as shown in Figure 5–7.
5. Close the protective cover.
6. Set the HIGH CURRENT breaker to ENABLED.
371B Calibration Fixture
Figure 5-6: Calibrating CURSOR readout for checking accuracy of collector current
measurement
371B Service Manual