Tektronix P6249, Instruction Manual

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Adjustments
P6249 4 GHz 5X Active Probe Instruction Manual
45
Offset Range
Use this procedure to adjust the offset range of the probe. The offset
zero of the probe should be checked before making any adjustment
to the offset range. The offset range of the probe is approximately
--3.5 to +3.5 volts.
1.
Power on the 1103 power supply and turn on the offset.
2.
Using a DMM, adjust the 1103 offset voltage to --0.5 V. Refer to
Figure 15 for the location of the offset voltage test point.
Offset voltage
Ground
Figure 15: 1103 power supply offset voltage location
3.
Connect the equipment as shown in Figure 16. Take care not to
disturb the offset level setting on the 1103 power supply.