Introduction - Teledyne Lecroy HVD3000 Series Operator's Manual

Introduction

The HVD3000 series high-voltage active differential probes are safe, easy-to-use, and ideally
suited for power electronics applications where the reference potential is elevated from
ground. The probes feature:
Differential voltage measurement capability in high common-mode environments
l
(up to 6kVrms)
Exceptional common-mode rejection ratio (CMRR) across a broad frequency range
l
Wide differential voltage range
l
High offset voltage capability
l
1% DC and low frequency gain accuracy
l
AC or DC coupling
l
ProBus interface with automatic scaling
l
Auto Zero capabilities
l
The CMRR for the probes is exceptional out to very high frequencies. This greatly assists in
measuring signals in the noisy, high common-mode environments of power electronics. High
CMRR combined with low probe noise and high offset capability makes the probes capable of
measuring very small control signals floating on high common-mode voltages.
Specifications are provided for using each probe within a wide differential voltage range, and
the probe can be safely operated even above this range. The probes will display signal up to the
measurable differential voltage before the saturation limit, although the specifications cannot
be guaranteed. Within the specified range, the probe is operating below the saturation point of
the amplifier, and very reasonable results can be expected.
The probes are calibrated for high-precision measurements to within 1% at DC to low
frequency (~10 kHz). This provides for high accuracy of top and base voltage levels of pulse-
width modulated signals. The AutoZero capability permits further measurement precision by
allowing small offset drifts to be calibrated out of the measurement.
All HVD3000 probes are compatible with any Teledyne LeCroy oscilloscope equipped with the
ProBus interface. The ProBus interface makes the probe an integral part of the oscilloscope.
Power is provided to the probe through the interface, so there is no need for a separate power
supply or batteries. Attenuation is automatically selected based on the oscilloscope gain range
(V/div) setting, and the offset adjust is unified with that of the oscilloscope (maximum offset
depends on the V/div setting and the oscilloscope model). In general, Teledyne LeCroy 12-bit
High Resolution Oscilloscopes (HRO) and HD4096 High Definition Oscilloscopes (HDO) provide
the most offset capability over the widest range of V/div settings.
The HVD310x probes require XStream™ software version 7.4 or greater. The HVD3206 and
HVD3605 probes require XStream software version 7.8 or greater.
Introduction
1