Grass Valley XSwitch Feb 08 2006 - Manual (Page 40)

40 XSWITCH Installation and Operation Manual
Appendix A — Remote Activation
2.
command string = “2,S”
LEN = 3
input string for CRC = Chr$(4)+Chr$(254)+Chr$(LEN)+com-
mand string
CRC program returns:
complete CRC string = “FFFFC67F”
LSB needed from CRC = “7F”
MSB needed from CRC = “C6”
packet string = Chr$(4)+Chr$(254)+Chr$(LEN)+command
string+Chr$(&HLSB)+Chr$(&HMSB)
3.
command string = “2, S”
LEN = 3
input string for CRC = Chr$(4)+Chr$(254)+Chr$(LEN)+com-
mand string
CRC program returns:
complete CRC string = “12E4”
LSB needed from CRC = “E4”
MSB needed from CRC = “12”
packet string = Chr$(4)+Chr$(254)+Chr$(LEN)+command
string+Chr$(&HLSB)+Chr$(&HMSB)
4.
command string = “2,R,61,20”
LEN = 9
input string for CRC = Chr$(4)+Chr$(254)+Chr$(LEN)+com-
mand string
CRC program returns:
complete CRC string = “FFFF8758”
LSB needed from CRC = “58”
MSB needed from CRC = “87”
packet string = Chr$(4)+Chr$(254)+Chr$(LEN)+command
string+Chr$(&HLSB)+Chr$(&HMSB)
5.
command string = “2,3,131,20”
LEN = 10
input string for CRC = Chr$(4)+Chr$(254)+Chr$(LEN)+com-
mand string
CRC program returns:
complete CRC string = “FFFFA78D”
LSB needed from CRC = “8D”
MSB needed from CRC = “78”
packet string = Chr$(4)+Chr$(254)+Chr$(LEN)+command
string+Chr$(&HLSB)+Chr$(&HMSB)