Home dbx User Forum dbx Archive Threads Zone Pro 640/641 Zone Pro 640/641 General Discussion

640M RS-232 Strings

I need RS-232 strings for the following actions:

1. Switch Line IP 1 to OP 1
2. Switch Line IP 2 to OP 1
3. Volume Control for Line IP 1
4. Volume Control for Line IP 2

I have tried the Network Tree and string calculators method but none of these work. Anyone use these with AMX control systems?


  • Hi AvVCKop,

    You will need to use the 3rd party control modules or the ZonePRO String Calculator to get these strings.

    You can download these items at the below link:

    Modules available:
      Crestron AMX String Calculator (used for other 3rd party control systems such as RTI and Extron).

    Hope this helps.
Sign In or Register to comment.