User Manual

Basic Operation
Probe Input
The probe is electrically protected against static voltage. However, if you apply voltages above its design limits you may damage
the probe tip amplifier. The limits are sho wn in the 4.25 V an d 42 V range graphs on the following p ages. (See Figure 2 on
page 17 .) (See Figure 3 on pag e 18.)
Common-Mode Signal Range
The common-mode signal range is the maximum volta ge that you can apply to each input, with respect to earth ground, without
saturating the input circuitry of the p robe. A common-mode voltage that exceeds the common-mode signal range may produce an
erroneous output waveform even when the differential-mode specification is met.
To verify the common-mode signal is within specification, set the probe to the 42 V range, temporarily connect one of the probe
inputs to ground, and connect the other probe input to one output of the differential signal. Repea t the procedure to test the
other o utput of the differential signal.
Differential-Mode Sig nal Range
The differential-mode signal range is th e m axim um voltage difference between the (+) and (-) inputs that the probe can accept
without distorting the signal. The distortion from a voltage that is too large can result in an invalid measurem ent.
16 TDP0500 & TDP1000 Quick Start User Manual