ATI Technologies 39-0220 Działanie - Strona 7

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750mm (30")

Side view of the antenna.

The magnetic field around the antenna is

complex and the reading range will vary

depending upon the tag's position within

the field. Keep the tag's face toward the

Testing Antenna Reading.

The magnetic field surrounding an antenna is not uniform and will be distorted by metal objects close by. The reading range is

further complicated by the ear tag orientation; the best range will be achieved with the tag flat face toward the antenna with a

noticeable deterioration if the tag is held edge on. However, this is not a cause for concern since cows seldom, if ever keep their

ears stationary for more than a few seconds at a time!

But for the sake of consistent testing, hold the ear tag flat face toward the antenna as shown in the diagram. To test the

reading range:

Run Subroutine 305 shown on Page (3).

When measuring the range, use a wooden or plastic lathe marked in cms or inches; do not use a metal rule.

Hold an ear tag with the hole pointing toward the centre of the antenna. Move the tag toward the antenna until

the beeper sounds then move it away until the beeper ceases. Make a note of the distance.

Use the STEP key to step to the next stall and repeat the process.

When the right hand side is complete, press the SIDE key to change to the left hand side and repeat the process.

Press RESET to exit the subroutine

If any antenna exhibits a significantly shorter read range than the average, or is less than 750mm (30")

contact ATL.

Cow

Program

HERRINGBONE

AUTO-ID

OPERATION: 4

Step

Ration

Yield/Flags

Side

RESET

Cancel

Stall/Side

DELETE

Change