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RFID Application Kit ATAK2270 User Manual 5-19
4871E–RFID–04/08
5.3.6.4 Selecting Write tab
Figure 5-22. ATA5577 Write Tab
In the Extended Mode, the Fast Write check box in the Downlink section is released (This is the only dif-
ference to the Write tap in Basic Mode).
However the Fast Write feature makes less sense for programming via resonating antenna coupling, due
to the needed time duration determined by the gap time of the ON/OFF Keying (OOK). Nevertheless, the
feature is performed by the software.
It may be worth considering for production programming transponders in Fast Mode by direct coupling or
by antennas with low Q factors. If the Fast Write is selected the default values of the Write Timing will be
reduced accordingly.
In the Write tab, the block data 1-7 and write timing text boxes are automatically populated with their
default values. If the Write check boxes are not selected, the blocks will not be written. If the Lock check
boxes are selected, the block will be permanently locked.
The data for each block is entered in hex. The blocks to be programmed are chosen by selecting the
check box in the Write column. To protect the data from being overwritten, select the Lock check box.
Once the lock bit is set, the information cannot be overwritten. Use this feature with care. Click the
Default button to restore the default settings. To exit the menu, click the Cancel button.
The default write timing set should be suitable for typical antenna with Q factors in low to medium range.
For special transponders, three ranges of antenna Q factors are selectable. According to Q selection,
the required write timing parameters are transferred to the timing window.