Application Note 65
Quartz Routing Switcher Remote Control Protocol
Page - 6 Revision 1.4
3. COMMANDS
All characters used should be in upper case. Values in { } brackets are variable fields. Values in [ ]
brackets are optional variable fields. Values in () brackets are non-printable characters i.e. carriage
return (cr). No space or tab characters are used. All crosspoint numbering starts from one (1) and not
zero (0). The (cr) character is ASCII carriage return (code 0D hex). A reply is only generated after a
(cr).
Some examples are given of ‘C’ code suitable to output messages. These are only intended to clarify the
command structure. They assume a separate ‘C’ routine RS232_printf which is similar to the standard
printf but with is output directed to the RS232 serial port of the host computer.
3.1. SET XPT MESSAGE
This allows a route to be made (crosspoint set) and uses the command format:
.S{level}{dest},{srce}(cr)
The legal levels are V,A,B,C,D,E,F,G in 8 level systems and V,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O in 16 level
systems.
TYPICAL MESSAGE Q1600 LEVEL TYPICAL USE
.SV1,2(cr) level 1 video
.SA2,4(cr) level 2 audio 1
.SB4,1(cr) level 3 audio 2
.SC31,12(cr) level 4 control/time code
The router will reply with a .U{level}{dest},{srce}(cr) message. The error message .E(cr) is generated if
the command is not recognised.
SEND REPLY
.SV001,002(cr) .UV001,002(cr)
.SC9,3(cr) .UC009,003(cr)
.SZ1,1(cr) .E(cr) /* unknown level */
.MA1,1(cr) .E(cr) /* unknown command */
Multiple levels can be set by including more level identifiers in the message
.SVA1,2(cr) level 1,2
.SAC1,2(cr) level 2,4
.SCV1,2(cr) level 4,1
.SVABC1,2(cr) level 1,2,3,4
The router will reply with an update message (see section 5.4)
.SBA1,2(cr) .UAB001,002(cr)
Example ‘C’ code to set a crosspoint on levels 1, 2, & 3.
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