2.5 Correcting a Probe Phase
Before using a probe to make measurements, be sure to correct the probe phase.
CAUTION
Do not apply external voltage to the signal output terminal for probe compensation adjustment.
Doing so may damage the internal circuitry.
French
ATTENTION
Ne pas appliquer de tension externe sur la borne de sortie de signal afin d’ajuster la
compensation de sonde. Cela pourrait endommager le circuit interne.
Procedure
1.
Turn on the power switch.
2.
Connect the probe to the input terminal to which the signal is to be applied.
3.
Connect the tip of the probe to the signal output terminal for probe compensation adjustment on
the front panel of the instrument and connect the ground wire to the functional ground terminal.
4.
Perform auto setup according to the procedures given in section 3.5, “Performing Auto Setup.”
5.
Insert a flat-head screwdriver into the phase adjustment hole and turn the variable capacitor to
make the displayed waveform a correct rectangular wave.
Signal output terminal for
probe compensation
adjustment
Functional ground terminal
Phase adjustment
hole
2-14
IM DLM4038-03EN
