Manual

6.2 Long Packet

The Long packet mode is intended to re-write the entire EEPROM area of the

unit (64 locations). The format is similar to the short packet with a few

differences as shown below:

X Product ID. For the SRn00 = 0F6 hex and for STn00 = 0F5 hex

A EEPROM DATA1 (from addr COM + 0)

B EEEPROM DATA2 (from addr. COM +1)

C EEPROM DATA3 (from addr. COM +2)

D EEPROM DATA4 (from addr. COM +3)

COM command byte = EEPROM address of the first data byte in a

block

chkH check sum hi byte }A + B + C + D + COM

chkL check sum lo byte }

16 packets like above are expected once started, covering all 64 EEPROM

locations.

Note: This data is sent out at 19200 baud as detailed in section 2. There

should be > 15 msec delay between bytes and > 100 msec. in between

packets.

A short packet (with COM = 70) should be sent at the end of the Long packet

to reset the device.

6.3 Direct Packet

Currently there is only one “Direct packet” in use and it is intended for the

channel number change.. This 3 byte packet is sent at 1,200 baud as

detailed in section 2. The form of the data packet is as follows:

chr(64 dec)

chr(Channel Number)

chr(149 dec)