Trek ESD User Manual
On-Board Controllers
High Speed, Low Cost OBCs for ESVM Applications
! TREK, INC., famous for
its Electrostatic
Voltmeters, is a world
class manufacturer of
custom ON-BOARD
CONTROLLERS (OBC)
for electrostatic
monitors.
!
! Measurement ranges to
±1.2 kV DC or peak AC
Since 1983, TREK, INC. has shipped more than half-a-million sets
of on-board electrostatic sensors to copier and laser printer
manufactures around the world. The reputation for quality and
reliability from Trek on-board controllers (OBC) has been highly
respected for more than 25 years. Trek noncontacting electrostatic
voltmeters (OBC) are designed to provide accurate, drift-free, highspeed, low noise measurements of electrostatic potentials in a low
cost unit for OEM electrophotography applications.
The Trek OBC accomplishes voltage measurements without
physical contact with the surface of the drum. The field-nulling
technique for noncontacting voltage measurement maintains DC
stability and high accuracy in the presence of probe-to-surface
variations. This technique assures no loading of the voltage on the
surface of the drum and permits accurate measurements on the
drum surface when the drum is in motion.
This permits measurements on rotating drums without the need to
establish a fixed spacing to maintain accuracy.
!
! Speed of response to
less than 5 ms for a
1 kV step change
!
! DC accuracies to better
than ±1% of full scale
!
! Customer specified
voltage monitor output
ratios
!
! Customer specified
probe-to-surface
The patented design of the Trek OBC guarantees a high gain and a
high signal-to-noise ratio for an accurate, fast speed of response,
with superior noise and drift performance. The Trek patented lowimpedance technology assures stable operation over a wide range
of temperature and humidity conditions.
Trek OBCs can make noncontacting, surface-potential
measurements in the range between 0 to ±1.2 kV DC or peak AC
and feature a durable, miniature probe.
The probe design provides low noise and drift performance even in
the presence of contaminating particulates and under conditions of
high humidity and temperature. A precision voltage divider
provides a low-voltage replica of the measured electrostatic
potential. The low-profile, PC board design makes them ideal for
making on-board voltage measurements in copiers and laser
printers.
TREK, INC. 190 Walnut Street • Lockport, NY 14094 800-FOR TREK • • USA •
716-438-7555 • 716-201-1804 (fax) • www.trekinc.com • sales@trekinc.com
Measurement and Power Solutions
All specifications are subject to change. 1128/DEC Copyright ã 2011 TREK, INC.
separations
!
! Customer specified PC
board size
!
! Customized probe
mounting fixtures
!
! Spatial resolutions
less than 8 mm
!
! Excellent stability
TM
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