Grass Valley 2200 - Manual (Page 112)

5-22
Section 5 Ñ Digital Effects Interface
Examples
The following are examples of switcher messages to and from the DPM. All values
are in hex. The semi-colon after 2 or more bytes is just used as a separator to give
the name of that Þeld and any other explanatory information. (Values are in
hexadecimal)
Example 1
DPM -> switcher, RETURN_CODE:
00 01 ; Version
00 11 ; Msg token, RETURN_CODE
00 00 ; Return Id
00 04 ; Data Size
00 00 00 16 ; Header checksum
00 00 00 0F ; Return code
Example 2
Switcher -> DPM, UNSUBSCRIBE
00 01 ; Version
00 0a ; Msg token, UNSUBSCRIBE
00 00 ; Return Id
00 18 ; Data Size
00 00 00 23 ; Header checksum
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ; 16 bytes rqstAddr
00 00 ; Rqst Id
00 00 ; Serial number
00 03 ; Service Id, PARAMETER_SERVICE
00 04 ; flags, CLEAR_SUBSCRIPTIONS