Mark Levinson RS-232 - Manual (Page 6)

6
Command list
Settings: 38.4K baud, 1 stop bit, no parity
Format: ! or !Vxx.x
The '!' is used as a framing character and can be sent any time to reset the
packet reception code. Note that all commands are 5 bytes ( '!' + 3char command
+ ) with the exception of the direct volume command which is 7 bytes ( '!' +
'V' + 4 bytes data + ) = 0x0d, carrage return.
Example: !GI1 ( selects input 1 on No320S)
Keys:
COMMAND DESCRIPTION
KVD Volume "key" down
KVU Volume "Key" up
KBA Balance Key
KSU Setup Key
KEN Enter Key
KST Standby Key
KMU Mute Key
KMO Mono Key
KIP Input select previous "key"
KIN Input select next "key"
KPO polarity key
KDI Display Intensity key
Note on ramping volume:
Repeated “EV_VOL_DOWN” or “EV_VOL_UP” key commands must be
sent at less than 150mS intervals to cause a smooth, accelerated ramping of
volume like the effect of holding the volume up or down key on the remote
control.
Directs:
COMMAND DESCRIPTION
GOP Go to Operate mode
GST Go to Standby mode
GMU Go to mute
GMN Restore volume
GI1 Go to input 1