Data Sheet
HVFO
High Voltage
Fiber Optically-
isolated Probe
Key Features
Applications
•
Upper-side gate drive signal
measurements
•
Floating control signal or sensor
voltage measurements
•
EMC, EFT, ESD, and RF immunity
testing and system optimization
•
Any small signal measurements
with high common-mode voltage
50 MHz and 60 MHz bandwidth
35 kV common-mode voltage rating
(ber optic isolation)
Superior Noise and Rejection
•
140 dB CMRR
•
Low loop inductance
•
Low attenuation
Reduced DUT loading, better pulse
response compared to conventional
HV differential probes
Selectable tips from ±1V to ±40V
Eliminates need to “oat” the
oscilloscope
ProBus-compatible with many
Teledyne LeCroy oscilloscopes
Optical Isolation is Best
Optical isolation between the probe
tip and the oscilloscope input reduces
adverse loading of the DUT, provides
faithful pulse response, and increases
condence in the measurement. Safety
against dangerous high voltage levels
can be ensured and unsafe “floating” of
the oscilloscope can be avoided.
Superior Noise Rejection
High CMRR (140 dB) provides more
accurate representation of the
measured signal despite the presence
of high dV/dt or dA/dt events elsewhere
in the circuit. The test lead is optimized
to limit loop inductance and radiated
pickup. Tip attenuations are optimized
for a wide range of signal amplitudes.
Compact, Simple, Affordable
The HVFO is small enough to t in
tight spaces, provides just enough
performance for real-world needs, and
is affordable enough to t the tightest
of equipment budgets.
Applications
The HVFO is ideal for measuring low
voltage (1 to 40V) signals floating on
a HV bus, such as in-circuit upper-side
gate drive signals and low voltage
control, sensor, or sense resistor
signals. The probe is also suitable for
EMC immunity testing in which a device
operation must be monitored in the
presence of disturbance signals.
The HVFO is an affordable, optimally designed probe for measurement
of small signals oating on an HV bus in power electronics designs or
for EMC, EFT, ESD, and RF immunity testing sensor monitoring.
It far surpasses the measurement capabilities and signal delity of
both conventional HV differential probes and acquisition systems
that rely on galvanic high voltage isolation. Furthermore, it mitigates
the need to rely on dangerous test setups that require oating the
oscilloscope and probe.