Adjustments
50 P6330 3.5 GHz Differential Probe Instruction Manual
Offset Zero and DC CMRR
Use the following procedures to adjust the offset zero and DC CMRR
characteristicsof theprobe.Duetothe interactionof thetwo
adjustments,it may be necessaryto repeat the procedure to optimize
the adjustments.
NOTE. If your oscilloscopehas a probe calibration routine,clear the
probe calibration constants at this time.
If the offset zero is adjusted, perform a functional check of the offset
range before closing the compensation box.
1. Connect the probe tips together using the square pin, Y-lead, and
KlipChipadapters.
2. Connect the probe as shown in Figure 18 on page 41.
3. Set the Var/0vbutton on the 1103 power supply to 0v (light off).
The output offset voltage is displayed on the DMM.
4. Adjust Offset Zero for 0.00 V ±3mV,displayedontheDMM.
Recordtheactual value.
5. Connect the probe as shown in Figure 25 on page 51. Monitor the
sourcevoltagewiththeDMM.