DIS DCS-6000 Technical Specifications
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DIS DCS-6000 Technical Specifications

Digital conference system, external microphone control rs232 protocol
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DCS 6000

Technical specifications

Digital Conference System
DCS 6000
External Microphone Control
RS232 protocol
Please refer to 'Revision History' at page 4 for compatibility to releases prior to Release 5.1.
Danish Interpretation Systems
DIS

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  • Page 1: Technical Specifications

    DCS 6000 Technical specifications Digital Conference System DCS 6000 External Microphone Control RS232 protocol Please refer to ‘Revision History’ at page 4 for compatibility to releases prior to Release 5.1. Danish Interpretation Systems...

  • Page 2: Table Of Contents

    Danish Interpretation Systems 1 List of Contents List of Contents ... 2 Revision history ... 4 Introduction and document overview... 5 Restrictions in DCS6000... 5 Voting Concepts ... 5 2.2.1 Voting session ... 5 2.2.2 Attendance check ... 6 2.2.3 Late Attendance ...
  • Page 3 Danish Interpretation Systems Messages in MAIN_GRP... 27 4.5.1 Messages in EXTERNAL_CONTROL_GRP ... 27 4.5.2 Messages in MICROPHONE_STATUS_GRP... 28 4.5.3 Messages in EXTERNAL_AUDIO_STATUS_MU ... 33 4.5.4 Messages in VOTING_STATUS_GRP... 35 4.5.5 Messages in UNIT_ATTENDANCE_STATUS_GRP... 38 4.5.6 Messages in UNIT_VOTE_STATUS_GRP... 40 Summary of status control messages (CU Controlling Microphones...

  • Page 4: Revision History

    Danish Interpretation Systems 1.1 Revision history 21-07-2003 Initial version of the document. 25-02-2004 Corrected a fault in section 3.4.4 Control Job Received (CU Format of the message corrected 17-06-2004 Updates and additions to the descriptions. 03-07-2004 A section with summary of the control messages and status of control messages has been added.

  • Page 5: Introduction And Document Overview

    Danish Interpretation Systems 2 Introduction and document overview The DCS 6000 system offers the possibility of controlling the microphones from a PC, AMX or other external control unit via a serial connection. This text documents how this feature is used; how external control of the DCS 6000 system is executed.

  • Page 6: Attendance Check

    Danish Interpretation Systems Technical Specifications 3-Button voting sessions provide the delegates with the option to make a selection among three alternatives: (typically Yes, Abstain and No), whereas 5-button voting sessions offer 5 alternatives (typically ++, +, 0, - and --). During an Open voting session, the votes are captured by the voting units, and the voting units show to the delegate, which button was pressed.

  • Page 7: Notation

    Danish Interpretation Systems After completion of a voting session, the attendance check result consists of delegates, who participated in the actual attendance check plus delegates participating only in the voting session (late attendance). 2.3 Notation The RS232 protocol is defined byte for byte (1 byte = 8 bits). This document uses the following notation to describe these bytes: Type of notation ASCII representation...

  • Page 8: Serial Protocol

    Danish Interpretation Systems Technical Specifications 3 Serial Protocol All communication between the CU and the external control unit is done through a serial connection either via RS232 or RS422. The format of the serial data is 8 data bits, 1 stop bit and no parity. Possible bit rates are 2400, 4800, 9600, 19200, 38400, 57600 and 115200 bits/s.

  • Page 9: Crc Calculation

    Danish Interpretation Systems 3.2 CRC Calculation An 8-bit CRC calculation with the polynomial x implementation of a function calculating the CRC value of a message is given below: unsigned char CalcCRC(unsigned char *Message, unsigned char Length) UCHAR Crc; UINT k; Crc = 0;...

  • Page 10: Message Types

    Danish Interpretation Systems 3.4 Message types The following sections describe the types of messages that are sent between the CU and the external control unit. For each message type the format of the messages of this type is shown, this description excludes the start/stop delimiters and the CRC.

  • Page 11: Receive Control Message From Cu (Cu External)

    Danish Interpretation Systems Data 1, Data 2 and Data 3 are the actual data bytes to send to the CU. Typically the function to be executed is defined by Message Group + Data 1 while Data 2 and Data 3 are the parameters top the function.

  • Page 12: Dcs 6000 Messages

    Danish Interpretation Systems 4 DCS 6000 Messages The RS232 binary protocol is used to transfer DCS 6000 system commands between the CU and the external control unit. General definitions for the communication are described in sections 3.4.3 and 3.4.4. This section describes the details for the commands that can be sent via the RS232 protocol. 4.1 Addresses in the DCS 6000 system Units, connected to the CU and provided with ability to initiate communication in the DCS 6000 system are assigned unique addresses.

  • Page 13: The Following Sections Describe The Messages From Each Message Group

    Danish Interpretation Systems The MICROPHONE_CONTROL_GRP with messages regarding switching microphone on/off, controlling the request queue etc. The value corresponding to MICROPHONE_CONTROL_GRP is 18. The VOTING_CONTROL_GRP with messages to start and stop attendance check and voting sessions, and to request voting results. The value corresponding to VOTING_CONTROL_GRP is 52.

  • Page 14: Messages In Microphone_Control_Grp

    Danish Interpretation Systems Technical Specifications 4.3.2 Messages in MICROPHONE_CONTROL_GRP The following subsections describe each of the messages in the group. The message format descriptions have the same meaning as in section 3.4.3. MICROPHONE_CONTROL_DELEGATE_OFF_ACTIVATE Command item value: 1 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <18> <1> <0> <0> <CRC> <STOP> When this command is issued to the CU all active delegate microphones are deactivated (chairman units are unaffected) and cannot be reactivated until the delegate off is deactivated.
  • Page 15 Danish Interpretation Systems Technical Specifications MICROPHONE_CONTROL_CLEAR_REQUEST_LIST Command item value: 8 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <18> <8> <0> <0> <CRC> <STOP> Clears the request list. MICROPHONE_CONTROL_SET_MAXSPEAKERS Command item value: 12 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <18> <12> <Max Speakers> <0> <CRC> <STOP> Set the maximum number of simultaneously active delegate microphones to Max Speakers.
  • Page 16 Danish Interpretation Systems MICROPHONE_CONTROL_REQUEST_ON Command item value: 16 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <18> <16> <Microphone Addr MSB> <Microphone Addr LSB> <CRC> <STOP> Places the delegate microphone with the address 256*Microphone Address MSB + Microphone Address LSB at the back of the request queue.

  • Page 17: Microphone_Priority

    Danish Interpretation Systems 4.3.3 MICROPHONE_PRIORITY This message is used to setup the speak priority for microphone units (chairman units and delegate units). Message format: <START> 'j' <ID> <0> <MSB addr> <LSB Addr> <25> <Microphone Addr MSB> <Microphone Addr LSB> <Speak Priority>...

  • Page 18: Messages In External_Audio_Control_Mu

    Danish Interpretation Systems 4.3.4 Messages in EXTERNAL_AUDIO_CONTROL_MU The messages in this message group are used to control the settings of the amplifiers in the system. The numbers The messages in this message group are used to control the settings of the amplifiers in the system. The numbers used to specify the amplifiers in the description of each message refers to the diagram below.
  • Page 19 Danish Interpretation Systems Technical Specifications AUDIO_CONTROL_MU_SPEAKER_VOLUME Command item value: 2 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <28> <2> <Gain Level> <0> <CRC> <STOP> This command is used to set the gain in amplifier 6. The new gain is given in dB by the parameter Gain Level which must be in the range –41dB - 0dB.
  • Page 20 Danish Interpretation Systems Technical Specifications AUDIO_CONTROL_MU_MIC_TO_LINE_OUT Command item value: 7 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <28> <7> <Gain Level> <0> <CRC> <STOP> This command is used to set the gain in amplifier 1. The new gain is given in dB by the parameter Gain Level which must be in the range –41dB - + 20dB.

  • Page 21: Messages In Voting_Control_Grp

    Danish Interpretation Systems 4.3.5 Messages in Voting_CONTROL_GRP The following control messages controls voting sessions and attendance check sessions in the CU. Again, the message format descriptions have the same meaning as in section 3.4.3. COMMAND_ITEM_VOTING_CONTROL_TYPE_OF_VOTING Command item value: 1 Message format: <START>...
  • Page 22 Danish Interpretation Systems Technical Specifications <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <52> <11> <0> <0> <CRC> <STOP> An attendance check (or presence check) among delegates is conducted in order to determine, how many are actually participating the meeting – how many votes can be cast from the present delegates. This command is sent to the CU to start an attendance check.
  • Page 23 Danish Interpretation Systems Technical Specifications Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <52> <14> <0> <0> <CRC> <STOP> Once an attendance check has been completed successfully, the external control unit can request the attendance check result. The attendance check result remains in the CU until the next attendance check session is started, or until the CU is reset.

  • Page 24: Summary Of Control Messages (External Unit Cu)

    Danish Interpretation Systems followed by the message VOTING_STATUS_VOTING_CLOSED. Notice, the order of these messages is opposite to the attendance check. VOTING_CONTROL_REQUEST_VOTING_DETAILS Command item value: 21 Message format: <START> ‘j’ <ID> <0> <MSB addr> <LSB Addr> <52> <21> <0> <0> <CRC> <STOP> Also, the result of a voting session remains in the CU until start of the next voting session or reset of the CU.
  • Page 25 Danish Interpretation Systems MICROPHONE_CONTROL_MICROPHONE_ON MICROPHONE_CONTROL_MICROPHONE_OFF MICROPHONE_CONTROL_REQUEST_ON MICROPHONE_CONTROL_REQUEST_OFF MICROPHONE_CONTROL_SYSTEM_OPERATION_MODE MICROPHONE_CONTROL_REQUEST_SYSTEM_STATUS MICROPHONE_PRIORITY (=25): This message group is not split further into command items. EXTERNAL_AUDIO_CONTROL_MU (=28): Command Item AUDIO_CONTROL_MU_SPEAKER_VOLUME AUDIO_CONTROL_MU_SPEAKER_UP AUDIO_CONTROL_MU_SPEAKER_DOWN AUDIO_CONTROL_MU_LINE_OUT_VOLUME AUDIO_CONTROL_MU_MIC_TO_SPEAKER AUDIO_CONTROL_MU_MIC_TO_LINE_OUT AUDIO_CONTROL_MU_LINEIN_TO_SPEAKER AUDIO_CONTROL_MU_LINEIN_TO_LINEOUT AUDIO_CONTROL_MU_LINE_IN_LEVEL AUDIO_CONTROL_MU_REQUEST_STATUS Turn on a delegate microphone. Turn off a delegate microphone Set a delegate in the request list Remove a delegate from the request...

  • Page 26: Messages From The Cu To The External Unit

    Danish Interpretation Systems VOTING_CONTROL_MU (=52): Command Item VOTING_CONTROL_TYPE_OF_VOTING VOTING_CONTROL_SECET_VOTING VOTING_CONTROL_START_ATTENDANCE_CHECK VOTING_CONTROL_STOP_ATTENDANCE_CHECK VOTING_CONTROL_REQUEST_ATTENDANCE_RESULT VOTING_CONTROL_OPEN_VOTING VOTING_CONTROL_CLOSE_VOTING VOTING_CONTROL_REQUEST_VOTING_DETAILS 4.5 Messages from the CU to the external unit When the binary service interface is in the microphone control mode the CU sends messages in the following message groups to the external controller: The MAIN_GRP group with messages regarding the connection and disconnection of microphone units.

  • Page 27: Messages In Main_Grp

    Danish Interpretation Systems Messages in MAIN_GRP The following subsections describe each of the messages in the group. The message format descriptions have the same meaning as in section 3.4.4. MAIN_FOUND_UNIT Command item value: 26 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <0> <8> <26> <Unit Type> <Addr MSB> <Addr LSB> <SerialNumber Byte 1>...

  • Page 28: Messages In Microphone_Status_Grp

    Danish Interpretation Systems Technical Specifications EXTERNAL_UNIT_ADDRESS Command item value: 2 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <27> <4> <2> <Addr MSB> <Addr LSB> <External Identity> <CRC> <STOP> The CU sends this message to tell the external control unit what address it has been assigned. The address is 256*Address MSB + Address LSB.
  • Page 29 Danish Interpretation Systems Technical Specifications The Delegate Off Status indicates whether the delegate off restriction is imposed to the system by another control units/chairman unit. MICROPHONE_STATUS_DELEGATE_MUTE_ACTIVE Command item value: 3 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <23> <3> <3> <Control Unit Addr MSB> <Control Unit Addr LSB> <CRC>...
  • Page 30 Danish Interpretation Systems Technical Specifications MICROPHONE_STATUS_MICROPHONE_ON Command item value: 9 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <23> <3> <9> <Microphone Addr MSB> <Microphone Addr LSB> <CRC> <STOP> The CU sends this message to signal that the microphone with the address 256*Microphone Address MSB + Microphone Address LSB has been activated.
  • Page 31 Danish Interpretation Systems MICROPHONE_STATUS_MAX_SPEAKERS Command item value: 15 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <23> <2> <15> <Max Speakers Value> <CRC> <STOP> Sent to signify that the maximum number of simultaneous active delegate microphones has been set to Max Speakers Value.
  • Page 32 Danish Interpretation Systems Technical Specifications The CU sends this message to tell that a complete update on the status of the microphone control application will be sent. MICROPHONE_STATUS_UPDATE_STOP Command item value: 20 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <23> <1> <20> <CRC> <STOP> The CU sends this message to tell that it has just finished sending a complete update on the status of the microphone control application.

  • Page 33: Messages In External_Audio_Status_Mu

    Danish Interpretation Systems This message gives the following status information about the microphone with the address 256*Microphone Address MSB + Microphone Address LSB Information Stored in Microphone State Bit 0 of State A Request State Bit 1 of State A Microphone Mute Bit 2 of State A State...
  • Page 34 Danish Interpretation Systems Technical Specifications AUDIO_STATUS_MU_SPEAKER_OFF Command item value: 4 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <29> <1> <4> <CRC> <STOP> The CU sends this message when the speakers on the delegate microphones are switched off. AUDIO_STATUS_MU_LINEOUT_VOLUME Command item value: 5 Message format: <START>...

  • Page 35: Messages In Voting_Status_Grp

    Danish Interpretation Systems Technical Specifications AUDIO_STATUS_MU_LINEIN_TO_LINEOUT Command item value: 9 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <29> <2> <9> <Gain Level> <CRC> <STOP> This message signifies that the gain setting of amplifier 3 has been changed to Gain Level dB. A setting of –41dB means the amplifier is switched off.
  • Page 36 Danish Interpretation Systems Type of Voting 3-Button Voting 5-Button Voting VOTING_STATUS_SECRET_VOTING Command item value: 3 Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <53> <3> <1> <Secret Voting> <CRC> <STOP> The Secret Voting parameter defines, whether votes are kept secret by the system, or whether it is acceptable for delegates to view votes cast by other delegates..
  • Page 37 Danish Interpretation Systems <START> 'c' <ID> <MSB addr> <LSB addr> <53> <1> <13> <CRC> <STOP> This message informs that an attendance is cancelled by the CU. This only happens in case of communication problems. After cancellation of an attendance check, the CU does not store any attendance check result.

  • Page 38: Messages In Unit_Attendance_Status_Grp

    Danish Interpretation Systems Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <53> <1> <18> <CRC> <STOP> This message informs that a voting session is closed in the CU. Immediately before this message, the CU has distributed the final voting result (VOTING_STATUS_VOTING_RESULTS). VOTING_STATUS_VOTING_CANCELLED Command item value: 19 Message format:...
  • Page 39 Danish Interpretation Systems microphone unit addresses, where delegates have acknowlegded their presence. The message format has the same meaning as in section 3.4.4. Message format: <START> 'c' <ID> <MSB addr> <LSB addr> <58> <8> <Presence MSB addr1> <Presence LSB addr1> <Presence MSB addr2>...

  • Page 40: Messages In Unit_Vote_Status_Grp

    Danish Interpretation Systems Address 1 = 16* <Presence MSB addr1> + <Presence LSB addr1 [Bit3-Bit0]> = 16 * 0 + 1 = 1 Presence = <Presence LSB addr1 [Bit4]> For Address 2 we receive: <Presence MSB addr2><Presence LSB addr2> Address 2 = 16*2 + 2 = 34 Presence For Address 3 and Address 4 there is no information (all is 0).

  • Page 41: Summary Of Status Control Messages (Cu External Control Unit)

    Danish Interpretation Systems The votes of a delegate is only valid, if the address is not 0 and the Vote is not 0: Example: Imagine, that the CU has received a Yes-vote from address 3 and a No-vote from address 20. The CU ‘packs’...
  • Page 42 Danish Interpretation Systems EXTERNAL_HEART_BEAT_REQUEST MICROPHONE_STATUS_GRP (=23): Command Item MICROPHONE_STATUS_DELEGATE_OFF_ACTIVE MICROPHONE_STATUS_DELEGATE_OFF_INACTIVE MICROPHONE_STATUS_DELEGATE_MUTE_ACTIVE MICROPHONE_STATUS_DELEGATE_MUTE_INACTIVE MICROPHONE_STATUS_MICROPHONE_IN_REQUEST MICROPHONE_STATUS_MICROPHONE_IN_SPEAK MICROPHONE_STATUS_MICROPHONE_ON MICROPHONE_STATUS_MICROPHONE_OFF MICROPHONE_STATUS_REQUEST_ON MICROPHONE_STATUS_REQUEST_OFF MICROPHONE_STATUS_MAX_REQUESTS MICROPHONE_STATUS_MAX_SPEAKERS MICROPHONE_STATUS_SYSTEM_OPERATION_MODE MICROPHONE_STATUS_MICROPHONE_UNIT_STATUS MICROPHONE_STATUS_UPDATE_START MICROPHONE_STATUS_UPDATE_STOP MICROPHONE_STATUS_MICROPHONE_ACTIVITY_STATUS EXTERNAL_AUDIO_STATUS_MU (=29): Command Item AUDIO_STATUS_MU_SPEAKER_VOLUME AUDIO_STATUS_MU_SPEAKER_ON AUDIO_STATUS_MU_SPEAKER_OFF AUDIO_STATUS_MU_LINEOUT_VOLUME AUDIO_STATUS_MU_MIC_TO_SPEAKER AUDIO_STATUS_MU_MIC_TO_LINEOUT Request to external control units to confirm RS232 communication value Comment Delegate Off is active...
  • Page 43 Danish Interpretation Systems AUDIO_STATUS_MU_LINEIN_TO_SPEAKER AUDIO_STATUS_MU_LINEIN_TO_LINEOUT AUDIO_STATUS_MU_LINE_IN_LEVEL AUDIO_STATUS_MU_STATUS_START AUDIO_STATUS_MU_STATUS_STOP VOTING_STATUS_GRP (=53): Command Item VOTING_STATUS_TYPE_OF_VOTING VOTING_STATUS_SECRET_VOTING VOTING_STATUS_ATTENDANCE_CHECK_STARTED VOTING_STATUS_ATTENDANCE_CHECK_STOPPED VOTING_STATUS_ATTENDANCE_CHECK_CANCELLED VOTING_STATUS_INTERIM_ATTENDANCE_RESULT VOTING_STATUS_ATTENDANCE_RESULT VOTING_STATUS_VOTING_OPENED VOTING_STATUS_VOTING_CLOSED VOTING_STATUS_VOTING_CANCELLED VOTING_STATUS_INTERIM_VOTING_RESULTS VOTING_STATUS_VOTING_RESULTS UNIT_ATTENDANCE_STATUS_GRP (=58) UNIT_VOTE_STATUS_GRP (=69) delegates to LineOut Audio level from LineIn to delegate loudspeakers Audio level from LineIn to LineOut LineIn level.

  • Page 44: Controlling Microphones

    Danish Interpretation Systems 5 Controlling Microphones The purpose of this section is to give a short summary of how the methods described in the rest of the manual can be used to control the system. 5.1 CRC Calculation 5.1.1 CU Reset message When the CU is powered up, the very first control message to send to the external control unit is a ‘CU reset’...

  • Page 45: Power Up Of The Cu After Connecting

    Danish Interpretation Systems Technical Specifications 5.2.1 Power up of the CU after connecting When the connection to the CU is done prior to putting power on the CU, the external control unit will receive start up information from the CU at power up, the ‘CU reset’ message. This is the initial message indicating, that the CU is powered up.

  • Page 46: Power Up Of The Cu Before Connecting

    Danish Interpretation Systems Technical Specifications After the ‘CU reset’ message, the CU transmits an ASCII text. This text is not wrapped in <START> and <STOP> delimiters, so it should simply be dismissed. Inside the CU, an initialization phase takes place after sending of the ‘CU reset’ message. The external control unit may respond to immediately to the ‘CU reset’...

  • Page 47: The Heart Beat Process

    Danish Interpretation Systems 5.3 The Heart Beat process After the external controller has been registered in the CU, it becomes part of the heart beat process. The heart beat process consists of a pair of control messages, a reply from the CU and a response from the external control unit.
  • Page 48 Danish Interpretation Systems Technical Specifications The following sequence illustrates retrieval of the microphone control system status. Figure 4 - Retrieval of Microphone Control System Status Printed in Denmark...
  • Page 49 Danish Interpretation Systems Technical Specifications The following sequence shows retrieval of Microphone Audio System status: Figure 5 - Retrieval of Microphone Audio System Status Printed in Denmark...

  • Page 50: Additional Detailed Example

    Danish Interpretation Systems 6 Additional detailed example 6.1 Example - Registration with the CU The first example shows how registration with the CU is done from AMX. The AMX equipment is connected to the CU via the RS232 connection. The CU has already been powered up. Three steps must be passed: Step (1) - The CU must be put in Microphone Control Mode Step (2) –...
  • Page 51 Danish Interpretation Systems Byte ‘m’ = <109> = [6D] <0> = [0] ‘c’= <99> = [63] ‘m’ = <109> = [6D] Resulting CRC-value is <109>. Now, the unfinished control message looks like this: ‘m’ <0> ‘c’ ‘m’ ’e’ Step (1.D) – Check for encoding of escape characters In order to avoid problems with the special values (252, 253 and 254) it is checked, if any of these values are part of the message to send.

  • Page 52: Step(2) - Requesting Registration In The Cu

    Danish Interpretation Systems 6.1.2 Step(2) – Requesting registration in the CU After entering microphone control mode, it is time to send a registration request to the CU. The control message required to do registration is Again the five steps of above must be completed to find the full control message to send: Step Action Deciding MessageType and contents.

  • Page 53: Step(3) - Registration Reply From The Cu

    Danish Interpretation Systems 6.1.3 Step(3) – Registration reply from the CU The Registration Reply is received from the CU ( . The following reply is received: EXTERNAL_CONTROL_GRP) [FC] [63] [01] [0F] [AD] [1B] [04] [02] [0F] [3C] [3C] [D1] [253] <252>...
  • Page 54 Danish Interpretation Systems 6.Receiver address checking Besides the above 5 steps, the external control unit must verify that the control message needs to be treated. This is done by checking the receiver address. Receiver Address = MSB addr * 256 + LSB addr = 4013 4013 is the group address of external control units, and that naturally needs to be handled.

  • Page 55: Example 2 - Turning On The Microphone Of A Delegate

    Danish Interpretation Systems 6.2 Example 2 – Turning on the microphone of a delegate. Assume, that a control unit has connected to a CU, entered microphone control mode and registered in the CU. Furthermore, the microphone status has been retrieved from the CU. Now, a chairman wants to turn on the microphone of a delegate.

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