CASIO DT900
Service Manual

7. BAR CODE CALIBRATION SETTING
7-1. About the calibration setting.
Since DT-900 employs swing angle controlling, it is necessary to set bar code calibration (criterion of swing angle setting). The setting has already done in the factory. Perform the setting only when LASER ASSY or MAIN PCB is replaced. Setting procedure is as follows. (1) Read a calibration setting bar code and memorize the calibration value in FROM. (2) Confirm that laser swing amplitude varies in accordance with bar codes.

7-2. Operation
1 Turn the unit on while pressing down [S] and [ � ] keys. SYSTEM MENU appears. SYSTEM MENU 1. 2. 3. 4. 5. EXECUTE AP SET MODE D AT E / T I M E TRANSMIT VERSION

2 Press [2] key to select SET MODE.

MODE SET 1. 2. 3. 4. ENVIRONMENT D I S P L AY M O D E BARCODE SET ID

3 Press [9] key to select CALIBRATION. � It is not shown on the menu. � Confirm that the green LED lights.

O B R C A L I B R AT I O N PLEASE PUSH TRG KEY T R G : S TA R T CRL : EXIT

4 Press down TRIGGER or [L] keys for more than one second to start calibration setting. Note: When reading a barcode, short time of key depression may cause an error. Press keys for more than one second. � Apply a laser beam on calibration setting bar code printed on the instruction manual. � Touch the nose of Handy Terminal on the center of the bar code and match laser beam and both end�s guide lines).

O B R C A L I B R AT I O N PLEASE PUSH TRG KEY T R G : S TA R T CRL : EXIT

Note: Correct bar code must be used in accordance with the reading window.

Page 25