CTE701 3M, CTE701 Datasheet - Page 2

CTE701

Manufacturer Part Number

CTE701

Description

WORKSTATION MONITOR CHECKER

Manufacturer

Series

ScanEM® Probesr

Type

Monitorr

Datasheet

1.CTE701.pdf (4 pages)

Specifications of CTE701

Description/function

Workstation Monitor Checkers

For Use With/related Products

Workstation, Wrist Straps

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Features

Power Supply Type

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

51111161982
80000919490
SCP265
XA004143203

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Thank you for purchasing Workstation Monitor Checker. With it, you will always

know whether your workstation monitors and ground monitors operate within

your specification parameters.

Workstation Monitor Checker model CTE701 is designed to verify proper opera-

tion of your dual wriststrap monitors, workstation monitors and ground monitors.

Checker simulates proper resistances and signals so that you can see whether the

response of your monitors complies with your specification.

Though the Checker has been designed to work mostly with Credence Technolo-

gies’ monitors, such as WS Aware

Man and Ground Man Plus, it is also able to verify the performance of most

workstation and ground monitors on the market.

Checker presents certain loads and signals to the monitor that simulate specific

parameters of ground connections and wriststraps.

monitors have the same features.

What is included

Each workstation monitor Checker includes:

Workstation Monitor Checker model CTA701A

9V Alkaline Battery

Battery comes already installed in the Checker.

Ground Cable (banana to alligator clip)

Ground Monitor Cable (banana to pin)

3.5mm Male-to Male cable

This User’s Guide

, Ground Master

, Iron Man Plus, Ground

Please note that not all

1ea.

Wriststraps

The Checker verifies proper operation of monitors of dual wriststraps, i.e. the

wriststraps that use two connections to an operator.

Setup

The Checker applies resistance of a certain value across the wriststrap terminal

input in order to simulate a wriststrap. In critical environments where the wriststrap

monitor is used the electrical resistance of an operator is specified to be 10MOhms

max. A good quality dual wriststrap has a1MOhm resistor in each half. It is up to

the user whether to account for these resistors or not. In case you account for these

resistors, then your limit would be:

10MOhms +1 MOhm + 1MOhm = 12 MOhms.

Limit is set by dip switch #10

Resistance, MOhms

Checker by default provides selected resistance plus 1MOhm, i.e. for 12MOhms

limit, it would provide 13MOhms, for 10MOhms limit it would provide 11MOhms.

When the Pass button is pressed, the Checker provides resistance 1MOhm less

than the limit, i.e. 11 and 9 MOhms accordingly.

Procedure

Body Voltage

Quality wriststrap monitors can detect excessive voltage that an operator may

develop as a result of movement-caused tribocharge and touching energized ob-

jects. To test this ability of the monitor, first set the body voltage threshold by

depressing the Body Voltage button and turning the blue potentiometer while mea-

suring the voltage on the tip of the 3.5mm plug vs. ground. Red and green LEDs

alternatively blink indicating positive and negative voltage applied automatically.

Your wriststrap monitor must react to both polarities of excessive voltage on the

operator.

Keep in mind that the voltage applied directly to the terminal of the monitor is 1/2

of the voltage on the operator due to 1M resistors in the wriststrap. Set Body

Voltage on the Checker slightly higher than your monitor is calibrated for. For

example, if your monitor is calibrated to 2.5V body voltage, depress Wriststrap

and Body Voltage High buttons simultaneosly and set your Checker to 1.35V

which is slightly higher than 1/2 of 2.5V. Your Checker can be set up to 5V.

your monitor. At this point the monitor should indicate failure.

connection.

Connect 3.5mm test cable to both the Checker and to Operator jack of

Depress the “Wriststrap” button. Your monitor should indicate good

Follow instructions in Basics

10.

Switch P

Switch Position

Switch P

Basics

Basics section

1 0

osition