LUCIA Serial Dongle - RS-232
Quick Start Guide

Synchronization

Unknown/Unsupported Commands

GeneralIf the LUCIA receives an unknown command string, it will
respond with “ERROR UNKNOWN COMMAND”.

This section describes general features of the LUCIA RS232
protocol. The LUCIA has the following features:

Visibility and persistence of settings••••

Volume control
Mute control
DSP Matrix control (and thereby source-selection)
Status readings

About the hardware
GND, TX and RX

Parameters set through the RS-232 protocol are added on topof the persistent settings of the LUCIA as set by the ApplicationBrowser. Thus RS-232 inflicted settings are read with theavailable RS-232 status polling commands and are not visible
through the Application Browser. The parameters set throughRS-232 remain when LUCIA enters and exits standby, but
only volume settings for RS-232 control persist when LUCIA
is powered down. Application Browser set settings persist
throughout the power cycle.

The three connections compounds a regular RS232 interface.

GPOControls

GPO is directly linked to the Lucia amp’s GPO interface(explained in the Lucia quick start guide).

Preparations• In order to use the Serial Dongle the Lucia amp must be
updated to software rev:924 or higher.
• In the Lucia Application Browser the control port must be
setup to function RS232.

RS-232 Connection schematic
A RS-232 connection to a LUCIA unit can be established from acomputer via a USB Serial Adapter and a LAB.GRUPPEN SerialDongle as sketched below:
Sub-D 9 female(Looking at the pinsControllingDevice

965Serial Dongle
RS-232Pin Signal
5 GND
3 TXD
2 RXD

1LUCIAGNDTXRXGPIO PortGPOCommunication Settings
The LUCIA uses 9600 bit/s, 8 databit, no parity and 1 stopbit.
Flow control (software or hardware) are not employed.

Command/Response
All commands/responses are in clear ASCII text and must be
terminated with a <CR> Carriage Return (0x0D).

A54-00001-60759

V2.0.1 09-25-2017

Step output volume up or down
stepvolume [output channels 1 to 4]
Command[+/- level in dB]<CR>
Adjusts the output volume a number ofsteps on the given channels. It is possible
to adjust the volume on multiple output
channels at once by using comma as
Functionseparator. The step level range isdescription-100 to 0 dB. When the volume is at-100 dB the channel is considered muted.
The resolution of the volume control
is 0.5 dB
One channel
stepvolume 1 -2
Usageexamples
Multiple channels
stepvolume 1,2 -2
OK STEP VOLUME
One channel
CH1:-2
OK STEP VOLUME
Multiple channels
CH1:-4 CH2:-2
ERROR STEP
Error in parameters
Returns
VOLUME
Note: The returned volume level is theresulting volume level.
Note: If multiple outputs are adjusted thevolume levels are only reported foravailable outputs.

Set output volume to a specific levelsetvolume [output channels 1 to 4]
Command[level -100 to 0 dB] <CR>
Adjusts the output volume to a specificlevel for the given channels. It is possible
to adjust the volume on multiple output
Functionchannels at once by using comma as
description separator. The level range is -100 to 0 dB.
When the volume is at -100 dB the channel
is considered muted. The resolution of thevolume control is 0.5 dB
One channel
setvolume 1 0Usage
examplesMultiple channels
setvolume 1,2 -11.5

OK SET VOLUME
CH1:0
OK STEP VOLUME
Multiple channels
CH1:-11.5 CH2:-11.5
ERROR STEP
Error in parameters
VOLUME
Note: If multiple outputs are adjusted thevolume levels are only reported foravailable outputs.
One channel

A single <CR> can be used to empty the LUCIA command buffer
to synchronize further communications.
Returns

Mute/Unmute all outputs
Commandsetmute [state]<CR>
Function
Mutes or unmutes all outputs
description
Mute all outputs
setmute 1
Usage
examplesUnmute all outputs
setmute 0
Mute all outputs
OK MUTE 1
Returns
Unmute all outputs OK MUTE 0
Error in outputs
ERROR MUTE

Set a matrix patch point gain
setmtx [channel in][channel out]:[gain]...
Command<CR>
Sets gain for one or more matrix patchpoints. A patch point is specified by input
and output channels concatenated without
Functionseparator. It is possible to set multiple patch
description points in one go (see usage examples). Thegain range is -31 to 0 dB. When gain is at-31 dB the patch point is considered unset.
The resolution of the set gain is 0.5 dB
Patch in1 to out1
setmtx 11:0
Patch multiple
setmtx 11:0
Usagechannels
12:-1 22:-2
examplesUnset one patch
setmtx 11:-31
point
Patch in1 to out1
OK SETMTX 11:0
Returns

Patch multiple

OK SETMTX 11:0
12:-1 22:-2

Unset one patch point OK SETMTX 11:-31
Error in parameters ERROR SETMTX

Clear matrix and optionally set patch points gain
clrmtx [channel in][channel out]:[gain]...
Command<CR>
Clears the matrix (all patch point gains are
set to -31 dB), then sets the gain for one ormore specified patch points. It is possible toFunction
set multiple patch points in one go
description (see usage examples). The gain range is-31 to 0 dB. When gain is at -31 dB thepatch point is considered unset.
The resolution of the gain is 0.5 dB

UsageexamplesReturns

Clear matrix
Clear matrix andset in1 to out1
Clear matrix and set
multiple channels
Clear matrix
Clear matrix andset in1 to out1
Clear matrix and set
multiple channels
Error in parametersclrmtx
clrmtx 11:0
clrmtx 11:0
12:-1 22:-2
OK CLRMTX
OK CLRMTX 11:0
OK CLRMTX 11:0
12:-1 22:-2
ERROR
CLRMTX

Put the LUCIA on standby
Commandstandby<CR>
Function
Puts the amplifier on standby
description
UsageStandby
StandbyexamplesReturns
Standby
OK STANDBY

Wake up the LUCIA
Command[20 or more spaces]
The amplifier, and thus the RS232 port
Functionwakes on logic level change. Therefore todescription wake the amplifier, you have to send
20 or more spaces
Usage
Wakeup[20 spaces]
examplesReturns
Wakeup
OK WAKEUP

Status
The following commands allows the user to get system
feedback from the LUCIA amplifiers
Get output volume level
Commandgetvolume [output channels 1 to 4] <CR>
Get the volume of one or more outputs.
It is possible to get the volume of multiple
output channels at once by using comma
Function
description as separator.
The resolution of the returned volume
is 0.5 dB
One channel
getvolume 1
Usage
examplesMultiple channels
getvolume 1,2
OK GET VOLUME
One channel
CH1:-10
OK GET VOLUME
Multiple channels
CH1:-10 CH2:-11.5
Returns
Error in parameters
ERROR GET VOLUME
Note: If multiple outputs levels are queried
the volume levels are only reported foravailable outputs.

Get output mute status
Commandgetmute<CR>
Get the mute status for all outputs.
FunctionA returned 1 signifies muted,
description
a returned 0 signifies unmuted.
Usage
Get mute for all
getmuteexamples
outputs
Returns
Mute all outputs
OK GET MUTE 0

Get matrix patch point gain
Commandgetmtx [channel in][channel out] …<CR>
Get gain for one or more matrix patch
points. A patch point is specified by
input and output channels concatenatedwithout seperator, e.g. “12” for in1 andFunctionout2. It is possible to get all or multiple
description
specified patch points in one go (see usage
examples). When gain is at -31 dB the patch
point is considered unset. The resolution of
the printed gain is 1 dB
Usage
Get gain for all
getmtxexamplesGet gain of in1
getmtx 11
to out1
Get gain of multiple getmtx 11 12 21
OK GETMTX 11:0
Get gain for all
12:-1 13:-2 14:-3
21:-4 …
Get gain of in1
OK GETMTX 11:0
Returns
to out1
OK GETMTX 11:0
Get gain of multiple
12:-1 21:-4
Error in parameters
ERROR GETMTX

Get temperature
Commandgettemp<CR>
Function
Returns the internal temperature of thedescription amplifier in degrees Celsius
Usage
Get temperature
gettempexamplesReturns
Get temperature
OK TEMP 37

Get rail voltage
Commandgetrail<CR>
Function
Returns the rail voltage for the PSU
description
Usage
Get rail voltage
getrailexamplesReturns
Get rail voltage
OK RAIL 65

Get amplifier status
Commandgetstatus<CR>

Function
description

Returns the overall status of the amplifier,indicating whether a fault has occurredthat prevents the amplifier from playing.
Sources of error can be either a short-circuitof an output or overheat.

Usage
examplesGet status

Returns

Get status
OK STATUS OK
Get status (amp error) OK STATUS FAULT

getstatus

Get model nameCommandgetprodname<CR>Function
Returns the name of the model
description
Usage
Get model namegetprodname
examplesOK NAME Lucia
Returns
Get model name120/2M

Get software version
Commandgetswver [mode]<CR>
Function
Returns the software version
description of the amplifier
Usage
examplesReturns

Get version

getswver v

Get revision

getswver r

Get version
Get revision
Error in parameters

OK SW 1.4
OK SW 807
ERROR SW

Get serial number
Commandgetserial<CR>
Function
Returns the serial number of the amplifier
description
Usage
Get serial number
getserial
examplesReturns
Get serial number
OK SERIAL 1441233

Best practice foroptimal performance
The two slots in the protruding PCB handle allows for fixation ofthe cables. In order to obtain the highest EMC performance on
the RS232 interface, we recommend using the ground pad
between the two slots.
Expose the cable screen and tie it to the ground pad withcable ties.

Specifications
Absolute Maximum Ratings
Receiver input voltage min –25 V
Receiver input voltage max 25 V
Input threshold low TA = 25°C 0.8 V
Input threshold high TA = 25°C 2.1 V
Output voltage low IOUT = 0.5 mA 0.3 V
Output voltage high IOUT = –0.5 mA 2.7 V

Legal Disclaimer
MUSIC Group accepts no liability for any loss which may besuffered by any person who relies either wholly or in part uponany description, photograph, or statement contained herein.
Technical specifications, appearances and other information aresubject to change without notice. All trademarks are the propertyof their respective owners. Midas, Klark Teknik, Lab Gruppen,Lake, Tannoy, Turbosound, TC Electronic, TC Helicon, Behringer,
Bugera, COOLAUDIO and EUROCOM are trademarks or registeredtrademarks of MUSIC Group IP Ltd. © MUSIC Group IP Ltd.
2017 All rights reserved.

LIMITED WARRANTY
For the applicable warranty terms and conditions and additional
information regarding MUSIC Group’s Limited Warranty, please see
complete details online at music-group.com/warranty.
Important information
1. Register online. Please register your new MUSIC Groupequipment right after you purchase it by visiting Labgruppen.com.
Registering your purchase using our simple online form helps us toprocess your repair claims more quickly and efficiently. Also, read theterms and conditions of our warranty, if applicable.
2. Malfunction. Should your MUSIC Group Authorized Reseller not
be located in your vicinity, you may contact the MUSIC Group Authorized
Fulfiller for your country listed under “Support” at Labgruppen.com.
Should your country not be listed, please check if your problem canbe dealt with by our “Online Support” which may also be found under“Support” at Labgruppen.com. Alternatively, please submit an online
warranty claim at Lab gruppen.com BEFORE returning the product.
3. Power Connections. Before plugging the unit into a powersocket, please make sure you are using the correct mains voltage foryour particular model. Faulty fuses must be replaced with fuses of thesame type and rating without exception.