Trek 706B User Manual

Model 706B

Portable Electrostatic Voltmeter

! Switch Selectable

Ranges:

0 to +1 kV DC

or

0 to -1 kV DC

!

! 3½ Digit LCD

Display

!

! Battery Test Switch

The Trek Model 70 portable electrostatic voltmeter is

designed to perform highly accurate noncontacting

surface electrostatic voltage measurements.

Applications include measurement of photoreceptor

surfaces in copiers and laser printers.

The Trek Model 706B E.S. [Electrostatic] Voltmeter provides
measurement ranges of 0 to +1 kV or 0 to -1 kV (switch
selectable) and employs an easy to read 3½ digit liquid
crystal display to indicate the measured electrostatic voltage.
Accurate electrostatic measurements can be performed over

a probe to test surface spacing of 1 mm to 5 mm.

A voltage-nulling technique is employed in the Model 706B that

achieves DC stability and high accuracy even if the probe-to­measured surface spacing varies during use, this permits
measurement of rotating electrophotography drums without
concern for the effects of measurement accuracy due to drum
eccentricities.

The probe design provides low noise and drift performance
even in the presence of contaminating toner particles or
under conditions of high humidity and temperature. The

small durable probe has a cable length of 183 cm (72²).

6B

!

! DC-Stable Probe

with Side Viewing
Aperture Orientation

!

! Low Noise

!

! Durable Design

!

! RoHS Compliant

!

! Compliant

The Model 706B is lightweight, battery operated, and
packaged in a rugged enclosure that provides a convenient
probe storage area.

Measurement and Power Solutions

www.trekinc.com

TM

Model 10/40A Specifications

Model 706B Specifications

All specifications are at a probe-to-surface separation of 3 mm unless otherwise noted.

PERFORMANCE FEATURES GENERAL

Measurement Range

0 to +1 kV or -1 kV DC
(switch selectable).

Accuracy

Better than 0.5% of full scale.

PROBE

Recommended Probe-to-Surface
Separation Distance

1 mm to 5 mm.

Trek Model 701P-76S Probe

Dimensions

8.7 mm diameter x 70 mm L
(0.35² diameter x 2.75² L).

Caution: The metallic components of
the probe are driven to the measured
surface voltage level with a current

capability of ±0.5 milliamperes. These
metallic surfaces should not be
connected to ground or touched during
operation.

Cable Length

1830 mm (72").

Aperture Size (oval shaped)

3.18 mm W x 6.35 mm L
(0.125² W x 0.25² L).

Aperture Orientation

Side viewing.

Range Switch Power Requirements

A two-position switch is used to
select the measurement range of
either 0 to +1 kV or 0 to -1 kV.

TEST/READ Switch

In the TEST position, if the digital
display indicates a value lower than
1100, the batteries should be
replaced. In the READ position, the
measurements are displayed.

Voltage Display

3½ digit liquid crystal display.

Range

0 to ±1000 V.

Resolution

1 V.

Zero Offset

Less than ±1 count.

Sampling Rate

3 readings per second.

NOTE: The Model 706B is
designed to make electrostatic
voltage measurements only!

To ensure safety, the Model 706B
should never be used to perform
measurements of “hard” voltage
sources or voltage sources
which can deliver currents high
enough to cause harmful shocks
or personal injury.

Two (2) 9-volt alkaline batteries.

Operating Time

10 hours after battery replacement.

Operating Conditions

Temperature

5 °C to 35 °C.

Relative Humidity

To 85%, noncondensing.

Dimensions

39 mm H x 130 mm W x 134 mm D,
(1.6² H x 5.2² W x 5.3²L).

Weight

455 g (1 lb), with batteries.

Ground Receptacle

The green banana jack must be
connected to ground to maintain
measurement accuracy.

Power On/Off

A two-position toggle switch.

Certification

TREK, INC. certifies that each Model 706B
is tested and calibrated to specifications
using measurement equipment traceable
to the National Institute of Standards and
Technology.

RoHS and CE compliant.

Copyright Ó 2011 TREK, INC.
All specifications are subject to change.
1122/DEC

Model 706B Included Accessories Certification (cont.)

Item Part No.

Portable Electrostatic Voltmeter . . . . . . . . . . . . . . . . . . . . 706B

Operator's Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23389

Two (2) (9 V) Alkaline Batteries . . . . . . . . . . . . . . . . . . . F1003R

Ground Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N9044

TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK

(fax) • www.trekinc.com • [e-mail] 716-438-7555 • 716-201-1804

RoHS compliant

Low Voltage Safety Compliance (IEC 61010)

Overvoltage Category

CAT I: Peripheral level outputs (less than 60 volts).

Pollution Category

Degree 1: Operate in environments where no
pollution or only dry, nonconductive pollution occurs.