Trek 157 Charged Plate Monitor User Manual

Model 157, Charged-plate monitor, Measurement and power solutions

Model 157

Charged-Plate Monitor

Trek's Model 157 Charged-Plate Monitor offers greater

provides high accuracy and virtually infinite impedance

accuracy, stability and bandwidth than conventional

loading of the plate, while allowing the ion collecting

designs. It combines Trek's patented precision charge

plate to be charged and monitored through the same

measurement capability with features that drive down

small-diameter cable connection.

performance testing and maintenance costs.

Flexibility: The measurement capacitance is

Model 157 is suitable for semiconductor, disk drive,

independent of the physical size and shape of the ion

LCD and many other manufacturing environments that

plate. Therefore, the size and shape of an ion collecting

are sensitive to static charge. It can be used to test all

plate, as well as the measurement capacitance, may be

types of ionizers including room ionization systems, AC

customized to match a particular ESD-sensitive device

and DC blowers, nuclear ionizers, gun type ionizers, and

within a manufacturing process, or be made to conform

pulsed DC ionizers. It is also useful in materials

to the ANSI/ESD-STM3.1 standard test method.

evaluation for testing dissipative qualities.

Greater Bandwidth: Trek's technology also provides

Features include a user-friendly menu system with a

greater bandwidth enabling "true" responses to be

clear and easy-to-read digital display, powerful graphics

observed, avoiding the masking of results which can

display, manual or bar code reading capability for quick

occur with other systems.

ionizer identification (and storage of associated tests
results), the capability of storing hundreds of ionizer

Balance Tests: The Model 157 resolves 0.1 volts and

tests on board for later download and data analysis,

features high accuracy with extremely low offset and

USB port for uploading/downloading test sequences

drift, which is ideal for testing ionizers in facilities

a n d te s t r e s u l t s to a c o m p u te r, o p t i o n a l

requiring critical ion balance such as in GMR and TMR

thermohygrometer to record temp/humidity conditions,

manufacturing areas.

and a lightweight static-dissipative enclosure for
optimum ease of transport.

Discharge Tests: Start and stop voltages are
programmable in 1 volt increments.

Enhanced features now include the ability to store &
retrieve data as data points or graphs, the option to

Ease of use: The Model 157 incorporates a user-

record operator comments for future reference, and the

friendly menu system. Frequently used functions are a

addition of a "fast" data acquisition mode (1 ms/data

keystroke away. A powerful graphics display

point) for rapidly-changing discharge events, to

emphasizes important information and provides

complement the "normal" mode (10 ms/data point).

operator prompts.

Technology: Trek's Model 157 employs a

Portability: Designed to be small and lightweight, this

revolutionary charged-plate monitor design that utilizes

unit is easily moved within a facility.

an ultrahigh-impedance, high-voltage follower to
monitor the ion collecting plate voltage. This technique

Battery Life: Features over 8 hours of battery life.

Now with Enhanced

Features!

Store & retrieve data as

data points or graphs

Record operator

comments for reference

"Fast" data acquisition

mode now available

Suitable for dissipative

testing of materials

Ideal for monitoring

static charge in a
manufacturing facility

Measurement and Power Solutions