A7F

A7F

40

Precautions

Environment

Do not use the A7F in places where there is ammonia gas, chlorine,

or sulfur dioxide.

Do not put wet, oily, or dirty fingers on the operation switches of the

A7F.

Handling

The molded components of the A7F use polyacetal resin and ABS

resin. Carefully use alcohol to clean the molded component so that

alcohol will not penetrate into the interior of the A7F. Do not use paint

thinner to clean the molded components.

Do not press the + and – push-buttons of the A7F simultaneously.

Press the setting switch with the tip of a ball-point pen. Do not use

pencil point or mechanical pencil point to press the setting switch,

otherwise the lead of the pencil or mechanical pencil may be broken

and A7F malfunctions may result due to fragments of the broken

lead.

Static electricity while touching the operating switch may damage

the circuitry of the A7F. To protect the circuitry from static electricity,

a protection circuit is required.

Circuit Example

Connect to each

switch terminal

Connect to the

circuitry

(100

Ω)

Do not impose any force on the switch label side and the cover of the

A7F, otherwise the A7F will need an operation force that is greater

than normal or the push-buttons of the A7F will be locked.

Do not impose external force on the top and bottom of the A7F as

shown in the following illustration when mounting the A7F.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. A50-E1-1