Lexicon MC-12 用户指南

Lexicon 
MC-12 Serial Communications Protocol 

 

Printed on: 07/13/05 

MUTE State: 

0 

UNMUTE 

The user mute state is set to unmuted.  The MC-12 may 
still be muted for other internal reasons. 

1 

USER MUTE 

The system volume decrements by the specified user 
amount as set in the OUTPUT LEVELS Menu. 

2 

FULL MUTE 

The system is fully muted. 

7.3.33.3 MC-12 Response 

The MC-12 will set the mute state according to the value transmitted.  The MC-12 may still be full muted if 
other conditions require the audio path to be muted.  This is only a direct access to the user mute state. 

7.3.33.4 Data Validation 

The data value transmitted to the MC-12 will be verified as a valid value.  If it is valid the MC-12 will 
set/clear the mute and respond with an ACK Packet.  If the data value is invalid the MC-12 will respond 
with a DC_INVALID_DATA error NAK. 
 

This command is not supported by the MC-12. 

This command allows the Host to send a 40 character string to the MC-12 for display on the OSD and 
Front Panel Display. 

7.3.35.1 Packet Description 

 

 

Command DC_CMD_SET_DISPLAY_STR 0x33 
Data Count 

Number of characters in the 
DisplayStr + 2 

nn 

 

Data[0] DisplayFlags 

nn 

Data[1]-Data[DataCount-1] 

DisplayStr 

ch ch ch … 0x00 

 

 

7.3.35.2 Data Description 

Display Command Flags: 
Word Bit  Definition 
0 

0 

FPD only: If set TRUE, the display string will only be sent to the FPD device for display.  

0 1 

Undefined. 

0 2 

Undefined. 

0 3 

Undefined. 

0 4 

Undefined. 

0 5 

Undefined. 

0 6 

Undefined. 

0 7 

Undefined. 

 
 
Display String: 

Data Type: 

Null (0x00) terminated ASCII character string. 

© 2005 Harman Specialty Group All rights reserved. 

 

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