28 6000 X-Series Oscilloscopes Service Guide
2 Testing Performance
9 When testing 6000 X-Series MSOs, use the 8-by-2 test connector to connect
digital channels D15-D8 to the output of the precision source. Then connect
the D15-D8 ground lead to the ground side of the 8-by-2 connector.
10 Repeat this procedure (steps 6 through 8) for digital channels D15-D8 to verify
threshold accuracy and record the threshold levels in the Performance Test
Record (see page 52). Be sure to set the thresholds with the User softkey for the
appropriate set of channels.