User manual

explosive. Do not use sharp tools, screwdrivers, metal brushes,

etc. for cleaning.

Battery replacement

If the frequency display flashes, the supply voltage is in the range

between approx. 4.5 and 4.7 VDC. In this case, a correct measure-

ment is no longer possible. The batteries must be replaced as follo-

ws:

- Switch the frequency counter to the position "OFF”,

- remove all connected cables,

- use a small screwdriver for recessed-head screws to

- loosen the two screws of the battery compartment on the bot-

tom side of the device.

- Carefully lift the cover,

- remove the empty batteries and

- replace them by new batteries of the same type.

- Observe the correct polarity ("+” and "-") and

- carefully close the battery compartment after the battery repla-

cement.

Caution!

Do not operate the frequency counter when it is open. Do not

leave empty batteries in the measurement device. Even leak-

proof batteries may corrode and set free chemicals that are

hazardous to your health or destroy the battery compartment.

Empty batteries are to be considered as special waste and, the-

refore, must be disposed of in an ecologically sound manner.

For this purpose, special collecting boxes are provided at spe-

cialist retail shops and also in several supermarkets or recyc-

ling collection centers.