MPAC-02
Contents
1. 2 19200 81 Fig 7 5 Open option Select Open with the left mouse button A window for the selection of the Upgrade file will open The appropriate directory must be selected for each module within which the upgrade file for each module can be found 02 Dual Channel Portable Audiocodec 34 Look in MPAC 02 BIS e dsp 2107 afu Micrv1_O AFU 88 us18 afu 2307 afu 1 D afu us20 afu dspy1_0 afu ta afu frdsp01 afu ta2 afu MicO13 afu us 6 afu MicO1 3b afu f 7 afu Files of type Firmware Upgrade Cancel Fig 7 6 Open Upgrade File File name Once the file with the latest software version is selected the Upgrade window opens File Status 7 Loaded V Microprocessor Vf Integrity verified _1 Digital Signal Processor 05 V Addresses verified _ Terminal Adapters v Ready Verification Write Read Verify 1 00 08 05 98 gt Upgrade 1 00 08 06 98 Firmware 1 00 ready to Upgrade Fig 7 7 Upgrade Window The current MPAC 02 module software version is shown in the bottom left section of the window and the version for the upgrade in the right The Upgrade button is pressed to proceed with the software upgrade A progress indicator appears that shows the time remaining to comp2. LJ a A DISCONNECT COORD DISCONNECT SELECT PROGICOORD 7 CHANNEL PROGRAM PROGRAM PROGRAM PROGRAM FBACK FBACK COORD COORD COORD COORD FBACK FBACK CHANNEL o CHANNEL o MIX INTERVIEW MIC OR TAPE RECORDER Fig 4 1 Position of the control panel elements MPAC 02 Dual Channel Portable Audiocodec 13 4 2 Commentator control section The figure in the left column shows the different controls associated to each of the three commentary channels COMMENTATOR 1 2 and 3 COORD CHANNEL PROGRAM GO PROGRAM y BAGI COORD 90 COORD JACK ON CHANNEL MIX LEVEL LEFT RIGHT COMMENTATOR 1 Dual Channel Portable Audiocodec CHANNEL COORD Disconnects the commentary microphone from the Program circuit and connects it to the Co ordination circuit Pressing the button again disconnects the Co ordination circuit and reconnects it to the Program circuit when the channel was previously connected to Program Send to Headphones Control Switch These press buttons route the corresponding signals to the commentator s headphones If the button is pressed repeatedly the signal is routed to the earphones in the following order Left right both or neither of the two the chosen option is indicated by the on off status of the LEDs associated with each earpiece e PROGRAM GO Is the foldback from the Program circuit The local mi
3. ADOL LABEL OFFHK EDIT NUMB ESC TELEPHONE NUMBER ONHK PULSE EXTEN VU REGISTER TELEPH NUMB ESC UELEPHONE NUMBER 0K lt gt 000000 ONHK PULSE EXTEN CONN DEL ADOL MABEL OK UP DOUN Anni MABEL 6 CHSEL lt gt DEL 02 Dual Channel Portable Audiocodec 29 The equipment starts up with all channels muted but conserves the foldback Pre selector configurations as set for each channel prior to switch off 6 1 Start up When the equipment is switched on and TLE mode is selected by the switch on the rear panel the following window will be displayed MPAC 02 POWERED BY AEQ ANALOG MODE STARTUP MODE and two seconds later the analogue stand by window 1 will appear ANALOG TELEPHONE LINE 1 OFFHK PULSE EXTEN P BOOK When the equipment is switched on DTMF dialling and NORMAL operations are selected by default Pressing the PULSE and EXTEN keys changes the dialling mode to PULSE and the operational mode to EXTENDED respectively The stand by window changes to show the new DTMF NORM keys respectively 1 However the PULSE DTMF and EXTEN NORM keys do not indicate the actual unit status but only indicate the status selectable by the corresponding key ANALOG TELEPHONE LINE 1 OFFHK MFDT NORM 6 2 Extended operat
4. These operative systems dictate the computer s minimum processor and available RAM memory specifications With Windows 95 the minimum configuration is a Pentium family processor with 16 MB RAM memory The software installation requires 3 MB hard disk space and up to 20 MB for user configurations A mouse and a free serial port are also required 7 3 Connections for computer control A female connector labelled CONTROL PORT is mounted on the rear of the Audiocodec chassis for connection to an external computer communicating through RS 232 protocol The PC is connected through its serial port The connections are as follows RX 2 TX 3 GND 5 The pins connecting the Audiocodec and PC are as follows MPAC 02 DB 9 MALE PC DB 9 FEMALE ioe cit 2 D E 3 5 MPAC 02 DB 9 MALE PC DB 25 FEMALE Deed Pe eae agate 3 2 7 7 4 Firmware upgrading The operation to upgrade the firmware is very simple A floppy disk is available for Firmware upgrading Important Ensure that the start up configuration is NOT set to Test Mode Also the equipment cannot be used for any other operation such as making a call etc during the process of upgrading the Firmware The upgrading procedure is as follows Before commencing the upgrading process the PC and AEQMPAC 02 must be interconnected using the PC serial port and the MPAC 02 Control port as previously described Once connected open th
5. 7dBu Output absolute noise pot at maximum sends cut 70dBu MPAC 02 Dual Channel Portable Audiocodec 38 Output power into 6000 5mW e Crosstalk 20Hz 20KHz PROG COORD nominal adjustment lt 60dB Headphones over microphone nominal adjustment pot at max microphone input load 200Q lt 36dB Telephone line interface Input Output Transformer Impedance 600Q Nominal input level 10dBu Nominal output level 6 5dBu Bandwidth Expander inactive Normal mode Telephone line 300Hz 4000Hz 1dB Output PROG F B 300Hz 4000Hz 1dB e Expander active Extended mode Telephone line 50Hz 3750Hz 1dB Output PROG F B 50HZ 3750Hz 1dB Distortion 1 2 at nominal input and output levels Telephone line 0 15 Output PROG 0 25 Absolute noise Telephone line 66dBu Output PROG F B 51dBu Frequency extension TX 250Hz RX 250Hz Electrical echo suppression Line Impedance 6000 Signal source 1KHz Adjusted for PRG GO 15dBu Output PROG 49dBu 64dB rejection Approximate dimensions Width 34 5 Height 10 3 Depth 30cm Weight 6 Kg approx MPAC 02 Dual Channel Portable Audiocodec 39 AEQ MPAC 02 Uninterrupted Power Supply System e Input voltage 90 to 264 Vac 50 60 Hz e Output voltage 13 7 Vdc 1 6 A e Autonomy 30 minutes e Weight 1300 gr max 02 Dual Channel Portable
6. 5 8 0 DISPLAY PORT CONTROL DATA CHANNEL PORT V35 V24 SND PSTN MPAC 02 Dual Channel Portable Audiocodec The signal generated in each of the four channels 3 microphone 1 micro line pass to the mixer circuits Program or Co ordination and then after passing through a limiter are sent to the A D converters on one hand and the foldback circuits on the other When a commentator wishes to speak to the studio the send to co ordination switch is pressed CHANNEL COORD which disconnects the Program circuit signal and sends it to the co ordination circuit The foldback circuits allow each commentator to select from the following signals for monitoring in their left or right earpiece at will Program send PROGRAM GO Program return PROGRAM F BACK Co ordination send COORD and Co ordination return COORD The CHANNEL ON push button allows the signal from the commentator to be sent to the Program circuit provided that it is not already being sent to Co ordination The channel level is adjusted by the Mix Level potentiometer The signal once it has been limited passes to the analogue digital converters and is processed in the DSP These are programmed for transmission by ISDN or CTN Commuted Telephone Network In the former case the signals reach the TA terminal adapters or V35 V24 interface which are controlle
7. Audiocodec 40 APPENDIX GUIDE TO RAPID USE 1 1 To establish communication Before making a call and with the unit switched off select the analogue telephone line CTN ANALOG TELEPHONE LINE or ISDN digital line ISDN option Selection of the required line mode is by the MODE SELECT switch found on the rear panel 1 1 1 Analogue telephone line CTN Switch on the unit and the display will illuminate with the message ANALOG TELEPHONE LINE Manual call e To make a call press the key that appears in the display e Enter the required telephone number using the numeric keyboard the number will be shown in the LCD display In this mode the equipment selects both DTMF multifrequency dialling and NORMAL frequency response by default These modes may be changed to PULSE and EXTENDED respectively by pressing the corresponding keys in the display Automatic call calling from the phone book Select the P BOOK using the corresponding key in the display Using the UP DOWN keys look for the required telephone number Press the VALID key to select the required number Press the OFFHK key to make the call If the call is not established at the first attempt line busy no reply in any call mode manual or automatic it is possible to redial by accessing the phone book where the last number dialled will be stored in the first position To disconnect the equipment from the line it is o
8. Dialler and Channel Selection Section PROG COORD DISCONNECT SELECT PROG COORD 1 Dual Channel Portable Audiocodec 02 NUMERIC KEYBOARD This is for entering the correspondent s number PROG DISCONNECT Pressing this button will disconnect the established Program output line COORD DISCONNECT Pressing this button will disconnect the established Co ordination output line If the connection is in 128 mode pressing either of the two switches will effect disconnection SELECT PROG COORD CHANNEL Pressing this button selects the desired output circuit Program Co ordination for making the connection dialling or DTMF tone generation The current selection is shown in the upper left corner of the Display HOLD FOR DTMF DTMF tones for remote control and other functions can be generated by keeping this button pressed and using the numeric keyboard The tones are then sent via the selected output Program Co ordination using the SELECT PROG COORD CHANNEL key The audio signal in the corresponding output channel is muted during tone keying generation 5 ISDN MODE USER INTERFACE Start up The unit starts up by default in either Automatic or Manual mode with all channels muted but retains the foldback Pre selector configurations set on each channel before the equipment was switched off 5 1 Automatic Start up Mode There are 30 possible automatic start up configura
9. said registry is empty the top line of the display will be blank the cursor position is marked by the corresponding display position blinking Initially the cursor is displaced to first position on the display 4 The numerical keyboard enters the number directly onto the top line of the display and automatically advances the cursor The lt and keys move the cursor backwards or forwards respectively to modify the numbers which have been introduced The DEL key erases the digit above the cursor and advances the cursor Finally the OK key validates the number and passes to the label edit window 5 A001 LABEL OK UP DOWN SEL 5 If the registry is empty the registry number is shown on the top line of the display and the cursor blinks in the first modifiable position with the LABEL field remaining blank The characters which form the label are selected using the UP and DOWN keys to pass through the table containing all the alphabetical and special characters such as blank space and hyphen A B Z When starting from an empty registry pressing DOWN will show and pressing UP will show It is only necessary to pause for one second after pressing UP or DOWN to select the desired character and pass to the next position in the label The cursor automatically advances to the next position The numerical keyboard is used to in
10. AEQ The phone book is shared by both the equipment s working modes ISDN and TLE Access is identical to that described in ISDN mode section 5 2 1 The differences are as follows 6 3 Access to the Phone Book and Recall Pressing the key in stand by 1 opens the phone book and recall window 2 2 DOWN The last number dialled is shown on the top line If the phone book is entered from start up no number is displayed 2 if any calls have been made the last number dialled UL will be seen window 27 UL 6861300 OFFHK UP DOWN _ ESC Recall is effected using the OFFHK key The UP and DOWN keys are used to enter the phone book and pass through the 256 entries as explained in the ISDN section The key replaces the DIAL key used in ISDN mode 2 001 LABEL OFFHK EDIT NUMB ESC Pressing the ESC key will return to the stand by state 1 6 4 Call generation Pressing the Off Hook key in any window will produce dialling tone Windows 1 17 2 and 3 Activating the key from any of these windows will open window 4 4 ONHK PULSE EXTEN VU Dialling is automatic if the number is taken from the phone book or is a recall which is shown on the top line of the display Dialling can also be performed manually using the numeric keyboard Pressing the VU key will open the VU meter window to enable visu
11. COD MODE ESC 001 ABEL OK UP DOWN SEL 8 ma PIELEPHONE NUMBER OK lt gt DEL 0 CALL IN PROGRESS D 002 ABEL CHSEL lt gt DEL 002 ABEL OK UP DOWN SEL AOL ABEL CHSEL lt gt DEL 5 call connected YES ISDN bY PRG eK UP DOUN ees CALL CONNECTED Disconnection Remote or Local DISCONNECTION MENSSAGE PRG CONNECTED 3 CODIF DATCHN ISDN G 22 STAT b4 PRG PG TXofRXof CC TXofRXof PG RXof CC TXof ESC CHANN RX TX ESC RX TX ESC This start up mode is selected when the Start up Configuration DIP switches are in position C01 02 Dual Channel Portable Audiocodec 19 The following window appears on starting the unit MPAC 02 POWERED BY AEQ Fig 0 ISDN MODE STARTUP Two seconds later the stand by or manual mode initial window appears ISDN 6711 A LAW 64 PRG Fig 1 P BOOK RECAL CHCOD STRC In the initial window 1 the default codification mode selected for the establishment of the Program circuit connection appears on the top line of the display The key SELECT PROG COORD CHANNEL is used to change to the circuit desired for the connection The message ISDN G711 A LAW 64 will appear on the top line indicating that the codifi
12. DIP microswitches on the rear panel For details of microswitch configuration see section 3 2 DIP microswitches 5 2 4 Access to start up configurations C02 to C31 30 are user defined configurations Configurations COO and C01 are reserved Test Mode and Manual Start up Mode and cannot be edited or modified Codification information and the number to use for each communication channel is stored in each configuration Program Co ordination each register consists of three fields LABEL NUMBER and CODIFICATION for each channel Program and Co ordination Therefore in one configuration register it is possible to store one codification type with the number to dial for the Program channel using a specific label and one codification type and number to dial for the Co ordination channel with a different label Important Given that 128Kb codifications use both 64Kb channels it is only possible to store the information related to the channel Program and Coordination The following explains the configuration register edition modification procedure Given that editing the fields in a register is performed similarly to editing the phone book the procedure will be roughly explained with those aspects which differ to the edition modification of the phone book being explained in more detail From the stand by status 1 pressing the STRC key will open window 8 CO2 LABEL PRG 8 OK UP DOWN ESC The first configuration regi
13. MPAC 02 Dual Channel Portable Audiocodec Audiocodec Portatil de Doble Canal ED 08 99 R amp AEQ us A E Q S A the manufacturer of this equipment is Registered Company number ER 080 1 96 conforming to the AENOR UNE EN ISO 9001 quality assurance standard INDEX 1 DESCRIPTION OF THE EQUIPMENT 1 1 BASIC DESIGN CONCEPTS 1 2 SPECIFICATIONS 1 3 FUNCTIONAL DIAGRAM 2 POWER SUPPLY 2 1 GENERAL 2 1 1 UNIT POWER SUPPLY 2 1 2 SWITCHING ON 3 INSTALLATION AND WIRING 3 1 DESCRIPTION OF THE FRONT PANEL 3 1 1 MICROPHONE INPUTS 3 1 2 LINE INPUT CHANNEL TAPE RECORDER INPUT 3 1 3 MIC TAPE SWITCH 3 2 DESCRIPTION OF THE REAR PANEL 3 3 DESCRIPTION OF THE LOWER PANEL 4 DESCRIPTION OF CONTROLS 4 1 CONTROL PANEL 4 2 COMMENTATOR CONTROL SECTION 4 3 MIC TAPE SECTION 4 4 VISUALISATION AND USER INTERFACE CONTROL SECTION 4 5 DIALLING AND CHANNEL SELECTION SECTION 5 ISDN MODE USER INTERFACE 5 1 AUTOMATIC START UP MODE 5 2 MANUAL START UP MODE 5 2 1 ACCESS TO THE PHONE BOOK 5 2 2 ACCESS TO RECALL 5 2 3 ACCESS TO CODIFICATION CHANGING 5 2 4 ACCESS TO START UP CONFIGURATIONS 5 2 5 MANUAL DIALLING 5 2 6 CALL GENERATION 5 2 7 CONNECTION ESTABLISHED 5 3 GENERATION OF DTMF TONES FOR REMOTE CONTROL 6 TLE MODE USER INTERFACE 6 1 START UP 6 2 EXTENDED OPERATION MODE 6 3 ACCESS TO THE PHONE BOOK AND RECALL 6 4 CALL GENERATION 6 5 GENERATION OF DTMF TONES FOR REM
14. OTE CONTROL 7 UPGRADING THE INTERNAL SOFTWARE FIRMWARE UPGRADE 7 1 SYSTEM DESCRIPTION 7 2 REQUIREMENTS OF THE PC USED FOR UPGRADING 7 3 CONNECTIONS FOR CONTROL COMPUTER 7 4 FIRMWARE UPGRADING 8 TECHNICAL SPECIFICATIONS APPENDIX 1 GUIDE TO RAPID USE 1 1 TO ESTABLISH COMMUNICATION 1 1 1 CTN MODE 1 1 2 ISDN MODE 1 2 EQUIPMENT USE ONCE COMMUNICATION IS ESTABLISHED APPENDIX 2 COMPATIBILITY WITH TELOS AND CCS AUDIOCODECS APPENDIX 3 AEQ WARRANTY 02 Dual Channel Portable Audiocodec 2 1 DESCRIPTION OF THE EQUIPMENT 1 1 Basic design concepts The AEQ MPAC 02 is a portable multiformat communications unit that in a single unit offers a complete collection of all the tools necessary to establish an audio and data link between the studio and remote location with the best possible sound quality and ease of use independent of the type of communication line The equipment permits two channel audio communication one for the Program and the other for Co ordination using a single line and is equipped with independent listening and level controls for each channel Using the Automatic Start Up System it is possible to completely program the mode the unit will adopt on start up In this way the technician can define all the communication parameters including telephone numbers and the commentator only has to select the switch on the rear panel that corresponds to the required configuration When connecting t
15. UMBER field maximum 20 digits to save the telephone number If the phone book registry is empty only the registry number is displayed and the label field does not appear The user can select the desired entry by using the UP and DOWN keys to pass through the 255 available registers Using the DOWN key will display entry number 2 and using the UP key will display entry number 256 reserved Note The 256 register of the phone book entry is reserved for future applications MPAC 02 Dual Channel Portable Audiocodec 20 key validates the entry selected by the user and passes to window 3 Pressing ESC will return to the stand by window 1 A001 LABEL PRG 3 DIAL EDIT NUMB ESC The DIAL key is pressed to establish the connection The unit dials the corresponding number via the selected circuit shown in the top right corner the said circuit can be selected using the SELECT PROG COORD CHANNEL key Activating NUMB displays the telephone number associated with this phone book entry 3 TELEPHONE NUMBER 3 ESC Pressing ESC will return to the previous window 3 The EDIT key summons the edit modify window for the selected entry First the number associated to the entry in question is edited 4 TELEPHONE NUMBER OK DEL The telephone number associated to the selected phone book registry appears on the top line of the display If the
16. act RJ11 type connector The telephone line must be connected according to the standard for RJ11 connectors using the two centre contacts 2 and 3 For connection to the telephone line socket the cable supplied with the equipment or similar must be used Selector Switch for ISDN Analogue Telephone Line Mode MODE SELECT ISDN ANALOG TELEPHONE LINE This selects the required line type ISDN CTN Important To change the line type selection the equipment must be switched off and restarted with the new configuration 02 Dual Channel Portable Audiocodec 10 Eight DIP microswitches numbered 1 to 8 are incorporated the unit These are accessed from the rear panel Each microswitch functions as follows DIP Microswitches Microswitch Function 1 None 2 Multiplexing J 52 IMUX 128Kbps modes 4 8 Automatic start up configurations All changes to the microswitch positions to modify the start up configuration must be made before starting the unit with the unit switched off Alterations made to the microswitch positions once the unit is in operation will have no effect and will not change the current configuration e The selection of multiplex mode for the 128 Kbps channels is performed using microswitch 2 the up position selects IMUX the down position selects J 52 The multiplex mode is shown in the LCD panel See also Appendix 2 e Automatic start up function configurations Allow the unit to start up using pr
17. alisation of the Program output level in the same way as in ISDN mode except only one channel will be seen 5 5 G iiiiiiii 5 ONHK PULSE EXTEN CONN If ONHK On Hook is pressed in windows 4 or 5 once the call is established or during dialling the call will be terminated and the unit will return to stand by status 1 Pressing the CONN key will return to the previous window 4 6 5 Generation of DTMF tones for remote control It is possible to generate and send DTMF tones to line to effect remote control operations when operating in TLE mode and in connection established status 4 It is necessary to press and hold the HOLD FOR DTMF key and at the same time press the corresponding digit on the keyboard The audio Program is cut during tone generation DTMF dialling mode must be used to establish the call for this function to work correctly 02 Dual Channel Portable Audiocodec 31 This section describes the procedure to upgrade the MPAC 02 Audiocodec internal software 7 UPGRADING THE INTERNAL SOFTWARE FIRMWARE UPGRADE 7 1 System description The system allows the internal software in the three basic MPAC 02 modules to be upgraded i e the Microprocessor Terminal Adapters TAs and Digital Signal Processors DSPs 7 2 Requirements of the PC used for upgrading The system requirements are determined by the Operative System in use Windows 95 or Windows
18. alls but it can not receive them e Compatibility with CCS CDQ PRIMA 64 Kbps Modes G722 Statistical MPEG MONO 64Kbps 24KHz MPEG MONO 64Kbps 32KHz 128Kbps Modes MPEG MONO 128Kbps 48 KHz MPEG JOINT STEREO 128Kbps 48 KHz MPEG LII STEREO 128Kbps 48 KHz MPEG LII DUAL 128Kbps 32 KHz Note the CDQ PRIMA audiocodec should be configured with the following parameters e configure as an independent decoder e the header menu configuration Protect transmits with CRC Original ON 150 Algorithm e CCSIMUX transmission mode if using 128Kbps mode MPAC 02 Dual Channel Portable Audiocodec 43 APPENDIX 3 WARRANTY S A warrants for one year period from the purchase date of the equipment the free substitution at our Technical Service workshops of any damaged or defective component due to manufacture error including the labour required to carry on such substitution and the subsequent adjustment of the equipment This warranty does not include transport installation and setting of the equipment nor cleaning or substitution of pieces subject to normal operative wear This warranty also excludes any kind of failure or damage which are attributable to the improper use of the equipment or to the handling by persons outside our Technical Service 02 Dual Channel Portable Audiocodec 44
19. am Go circuit the right input can be added to the Coord Go circuit e Analogue access to the Program and Co ordination audiocodecs with the possibility of using them as inputs for auxiliary return Ambient Sound signals or public address for stereo transmissions e Up to 30 different microswitch selectable configurations may be defined and stored which can be automatically activated when the equipment is switched on e Available code algorithms G 711 64Kbps 3 5KHz audio G 722 Statistical 64Kbps 7KHz audio G 722 H 221 H 242 64Kbps 7KHz audio LD Extend 15 KHz mono audio with low delay 128 Kbps ISO MPEG mono 24 KHz 64Kbps 11KHz audio ISO MPEG LII mono 32 KHz 64Kbps 10 5KHz audio ISO MPEG LII mono 48 KHz multiplexing J 52 IMUX 128 Kops 20KHz audio ISO MPEG LII Joint Stereo 48KHz multiplexing J 52 IMUX 128Kbps 15KHz audio stereo ISO MPEG LII Dual 32 KHz multiplexing J 52 IMUX 128Kbps 10 5KHz audio dual 02 Dual Channel Portable Audiocodec 3 1 3 Functional diagram Schematic functional diagram of the Audio Codec COMM 3 COMM 2 COMM 1 MIC LINE MIX TO CC TI ims ae SE 0 ryan NO 29 NO Oud gt 8 4 B AID DSP 8 359 84409 22 0992 93 00 O9 Sud CONTROL 9 5 201 NI 184 201 Lino ec 1no COM 2
20. ard cylindrical DC 2 mm internal 6 mm external Power consumption Approx 22W Fuses Various types depending on the power supply voltage to be used calculated by Iruse 22W Vdc supplied Examples at the extremes 12V 1 8A Slow blow 35V 0 6A Slow blow 3 3 Description of the lower panel O VR Vike The following elements are found on the lower panel 2 Trimmers for analogue input sensitivity adjustment of the Local Return Left LOC F B LEFT 1 and Local Return Right LOC F B RIGHT VR2 02 Dual Channel Portable Audiocodec 12 4 DESCRIPTION OF CONTROLS 4 1 Control Panel From the operational point of view the control panel is divided into four sections Commentators control section COMMENTATOR 1 2 and 3 Mic Tape Section Visualisation and Control Section Dialling and Channel Selection Section AEQ G722 STAT b4 PRG DUAL CHANNEL P BOOK RECAL CHCOD STRC PORTABLE AUDIOCODEC MPAc o2 M
21. ation at this time 5 2 6 Call generation Activating the DIAL key in any of the windows represented by Fig 3 6 and 13 initiates the call generation process which results in the display of a release of call or successful connection message When communication is initiated window 14 will appear CALL IN PROGRESS 14 02 Dual Channel Portable Audiocodec 25 If the communication continues successfully and connection is established the connection established window 15 will open PRG CONNECTED SYNC CODIF DATCHN VU 15 This window is detailed in the following section If on the other hand the connection cannot be established the user will be informed of the reason for the failure The following call release messages are issued by the equipment i ERROR An internal error has occurred in the call generation process ii CHANNEL NOT AVAILABLE An attempt is being made to establish communication through a channel that is already occupied in the unit iii NO ISDN AVAILABLE An attempt has been made to establish communication when there is no ISDN line available iv DESTINATION BUSY The remote terminal is occupied v NO ANSWER The remote terminal has not responded to the incoming call vi CALL REJECTED The network has rejected the call this includes all the remaining possible causes of release vii CALL NOT CONNECTED The waiting time set for the unit to establish connection with a remote t
22. ble Audiocodec 37 8 02 TECHNICAL SPECIFICATIONS Microphone inputs transformer balanced Input impedance gt Nominal input level for PRG GO OdBu 60dBu Maximum input level for nominal adjustment 34 5dBu Input range for PRG GO OdBu 70dBu 34 5dBu Output variation limits for nominal input co 10dBu Bandwidth 20Hz 20KHz 1 3dB EIN G 60dB Absolute noise 60 5dBu 120 5dBu with BPF EIN G 70dB Absolute noise 52 5dBu 122 5dBu with BPF e Line input transformer balanced Input impedance gt 6K5Q Nominal input level for PRG GO OdBu 1 5dBu Maximum input level for nominal adjustment 26dBu Input range for PRG GO OdBu 9dBu 26dBu Output variation limits for nominal input co 10dBu Bandwidth 20Hz 20KHz 1dB e LOC F B LEFT and RIGHT inputs transformer balanced Input impedance gt 6K5Q Nominal input level for PRG GO OdBu OdBu Maximum input level for nominal adjustment 26dBu Range adjustment for PRG GO OdBu 10dBu 10dBu Bandwidth 20Hz 20KHz 1dB Outputs 1 and 2 transformer balanced Output impedance 750 Nominal output level OdBu Maximum output level 16dBu Absolute noise with all sends cut SEND GO 63dBu RETURN F BACK 69 51dBu with all codecs activated Headphone outputs Nominal load impedance 2 x 600Q Nominal output level potentiometer at maximum 6dBu Maximum output level
23. ble elements on the front and rear panels 3 INSTALLATION AND WIRING 3 1 Description of the front panel A series of combo XLR3 Jacks 1 are found on the front panel one is connected to each channel of each input This type of connector allows the connection of male XLR3 or male telephone type jack plugs therefore admitting balanced or asymmetric signals The commentator channels are provided with 14 stereo telephone Jacks 2 for the connection of a headphone The Mic Tape channel possesses a micro line level selector switch 3 3 1 1 Microphone Inputs 1 The microphones are normally supplied with the appropriate connectors for direct connection to the Audiocodec The connector wiring is shown below XLR connectors Jack connectors 1 ground sleeve ground 2 microphone V tip microphone V 3 microphone V ring microphone V 3 1 2 Line Input A cable with either a male XLR3 or 1 4 stereo Jack must be used The connector wiring is the same as that for the microphone inputs 3 1 3 MIC TAPE Switch 3 To select microphone input level the switch is set to the rest position switch button out and to select line input level the switch is set to the activated position switch button in MPAC 02 Dual Channel Portable Audiocodec 7 3 2 Description of the rear panel e s ei o o o o OUT 1 SELECT OUT 2 SELECT FUSE UR CCGO FB PRGGO FB S B ceo cr
24. board e Press the DIAL key to initiate the dialling process The message CALL IN PROGRESS appears in the display during the establishment of a call If the communication is successfully realised the message CALL CONNECTED will appear If the call fails an error message will appear indicating the possible cause The dialling process for the second channel is the same as described above Automatic call e Select the P BOOK key in the display Using the UP DOWN keys look for the required telephone number e Press the OK key to select the required number e Press the DIAL key to initiate the dialling process If the call is not established at the first attempt line busy no reply and independent of the mode being used manual or automatic redial may be effected using the RECAL option where the last number dialled will be stored To disconnect the unit from the corresponding line CTN o ISDN the button corresponding to the channel for disconnection PROG DISCONNECT or COORD DISCONNECT situated at the left of the numeric keyboard must be pressed In ISDN 128Kb mode using both 64Kb channels as one channel pressing either of the two buttons will disconnect the equipment VU mode VU meter may be selected to monitor the output signal level once communication has been established through either analogue CTN or ISDN digital line 1 2 Equipment use once communication is established The AEQ MPAC 02 Portable Audiocodec behaves l
25. cation mode is active and that the Co ordination circuit has been selected The function associated with each of the multifunction keys appears on the bottom line of the display CHCOD STROC In this situation the user can perform five operations 1 Activating Telephone Book displays the phone book which is included in the unit 2 Activating RECAL RECALL displays the number and circuit used in the last conexion 3 Activating CHCOD CHANGE CODIFICATION accesses the window which allows the mode of connection codification to be changed 4 Activating STRC SAVE CONFIGURATION accesses the window which allows a new or existing modified start up configuration to be saved 5 Finally if the numerical keyboard is used in the stand by state the manual number composition window appears and the user can manually enter a telephone number and make call The following describes the use of the above functions 5 2 1 Access to the phone book On activating P BOOK the following window appears A001 LABEL 2 OK UP DOWN ESC The first entry stored in the phone book s non volatile RAM memory appears on the upper line of the display Each phone book entry has three fields Position number field A001 A256 to designate the position of the entry in the phone book LABEL field maximum 10 characters to give a name to the entry N
26. d by the communication controller this accepts user instructions entered through the keyboard with this information being shown on the alphanumeric display In the latter case the signals are sent to the CTN telephone socket through the D A converter instead of the ISDN adapters TA or V35 V24 In both cases a return signal which may be two signals when using ISDN travels in the reverse direction from the communication interface to the DSP from where it passes to the D A converters that generate the Program and Co ordination return signals These signals may be heard in the commentator s headphones as they are being sent to the corresponding outputs The Audiocodec in turn has a data port to send and receive auxiliary data channels and a control port for equipment configuration and upgrading 02 Dual Channel Portable Audiocodec 5 2 POWER SUPPLY 2 1 General The power supply connector 1 as well as the on off switch 2 are found on the rear panel of the unit AEQ am a g START UP CONFIGURATION OG MODE SELECT ISDN 2 1 1 Unit power supply Power is supplied to the equipment through the connector marked DC INPUT using the power supply
27. e co PRG FB 9 G9 35V 0 6A S B 12345678 J DC INPUT ANALOG SELECT ISDH 2 TELEPHONE 5 voczow numbered elements and their use are described in the following selection gt gt ENABLE MIX ENABLE MIX TO COORD GO PROGRAM GO 1 Output connectors OUT 1 and 2 for Co ordination and Program sends and returns respectively XLR3 Male 2 Switches OUT 1 2 SELECT to obtain at the output the send signal GO return signal or both send return from the Co ordination CC and Program PRG circuits respectively 3 Input connectors for local left channel foldback LOC F B LEFT and right channel foldback LOC F B RIGHT XLR3 Female 4 Switches for sending these signals to the Program send ENABLE MIX TO PROGRAM GO and Co ordination send ENABLE MIX TO COORD GO respectively B V35 V11 or V24 interface Sub D25 Female 6 RS232 control port CONTROL PORT Sub D9 Female 7 _ 5232 data channel port DATA CHANNEL PORT Sub D9 Female 8 Mode selector switch MODE SELECT ISDN ISDN Analo
28. e floppy disk containing the Firmware upgrade MPAC 02 Dual Channel Portable Audiocodec 32 amp AEQ Find the application MPAC 02 Firmware Upgrade and double click on the application icon whereupon the following screen will be seen FiMPAC 02 Firmware Upgrade iT MPAC 02 1 00 08 05 98 Digital Signal Processor DSP 1 00 08 06 98 Terminal Adapters 1 00 06 04 98 COM2 13200 81 Fig 7 1 MPAC 02 Firmware Upgrade screen If communication is correctly established with the AEQ MPAC 02 the screen shows the three basic modules the Microprocessor Digital Signal Processor DSP and Terminal Adapters each with the current Firmware version and date e g Microprocessor Ver 1 00 08 05 98 Luminous indicators in the bottom right hand corner of the screen display the state of communication between the PC and AEQ MPAC 02 They should be green and blinking The serial channel communication parameters are displayed in the bottom left hand corner of the screen If communication is not established correctly the user must indicate the port to be used for communication The corresponding screen is FiMPAC 02 Firmware Upgrade File Hel Access must be 2 gained through the PC COM2 Help File Setup PC Constructor menu to configure TW z 02 the corresponding AVR 02 communicat
29. edetermined pre programmed parameters code numbers to dial etc The unit has two pre programmed software configurations available configuration COO Test mode and configuration C01 Manual Start up mode these cannot be modified The remaining 30 configurations C002 C031 are freely available to the user Important Check that your AEQ MPAC 02 is not set in Test mode Configuration of microswitches 4 8 for access to the automatic start up configurations Conf 4 5 6 7 8 4 5 6 7 8 0 0 0 0 0 C16 10000 01 0 0 0 0 1 C17 1 0 0 0 1 0001 0 1 0 01 0 0 0 0 1 1 C19 1 0 0 1 1 0 010 0 C20 1 0 10 0 0 0 1 0 1 C21 1 0 1 0 1 00110 C22 1 0110 C07 0 O 1 1 1 C23 1 0 1 1 1 cos 0 100 0 C24 1 1 0 0 0 cog 01001 C25 11001 C10 0 1 0 1 0 C26 1 1 0 1 0 C11 0 1 01 1 C27 11011 C12 0 1 1 00 C28 1 1 1 0 0 C13 0 1 1 0 1 C29 1 1 1 0 1 C14 0 1 1 1 0 C30 1 1 1 1 0 C15 0 1 1 1 1 C31 1 1 1 1 1 1 ON microswitch in the up position 0 OFF microswitch in the down position Pre set configurations these cannot be modified by the user MPAC 02 Dual Channel Portable Audiocodec 11 Power is delivered to the Audiocodec by the 02 Uninterrupted Power Supply System or another suitable power supply through the DC INPUT connector DC Voltage 12 to 35 V Power supply Polarity V centre pin V exterior Current 1 7 12V less at gt 12V Connector Stand
30. erminal has expired The equipment will return to the stand by window 1 following the emission of any of these release messages 5 2 7 Connection established The following message will appear in the display after window 14 if the connection is established CALL CONNECTED 14 and the following window will appear one second later PRG CONNECTED 15 CODIF_DATCHN VU If the call is established through the Co ordination circuit CC CONNECTED SINC will appear on the top line of the display SINC NON SINC The connection is established and sincronized non sincronized CODIF Opens the codification window DATCHN Opens the window for the establishment of auxiliary data channel VU Opens the VU meter mode window 02 Dual Channel Portable Audiocodec 26 5 2 7 1 Data channel This is a transparent bi directional point to point 1200 baud channel For the channel to operate correctly the transmission configuration should be set to 1200 bauds No parity 8 data bits 1 stop bit The data channel can be established in relation to the codification mode being used in the established connection An auxiliary data channel may be established in the following modes e Modes 64 Modes 128 G722 H221 64 MPEG 48 MONO 128 MPEG 32 MONO 64 MPEG 48 JSTR 128 MPEG 24 MONO 64 MPEG 32 DUAL 128 Modes which do not accept auxiliary data channels e The remaining modes shown in the table in secti
31. gue Telephone Line ANALOG TELEPHONE LINE RJ45 ISDN line connector RJ11 Analogue Telephone Line CTN connector Configuration microswitches STARTUP CONFIGURATION Power supply connector DC INPUT Fuses Power supply switch ON x Co ordination and Program send return output connectors OUT 1 2 The output cables must be connected to the Audiocodec using female XLR 3 pin connectors The connector wiring is shown below balanced or unbalanced depending on the receiver inputs Balanced outputs GROUND 1 Ground 2 Output V 3 Output V DEVICE Unbalanced outputs GROUND 1 Output V and Ground 2 Output V 3 Output V and Ground 02 DEVICE 02 Dual Channel Portable Audiocodec 8 amp AEQ Local listening input connectors left LOC F B LEFT and right LOC F B RIGHT The input cables must be connected to the Audiocodec using male XLR 3 pin connectors The connector wiring is shown below balanced or unbalanced depending on the receiver inputs Balanced inputs GROUND 1 Ground 2 Tape V 3 Tape V DEVICE Unbalanced input 1 Tape V and Ground 2 Tape V 3 Tape V and Ground GROUND 02 DEVICE V35 V11 or V24 Interface DB25 connector Admits 2 types of external TA V35 interface V11 Uses unbalanced asynchronous control signals while synchronous clock and data signals are balanced V24 in
32. he power supply automatically generates calls to the pre set numbers 1 2 Specifications e Three microphone and one micro line inputs with COMBO connectors for XLR3 and Jack Three stereo headphone outputs with independent level controls for left and right outputs Independent analogue mix level control for each input channel Mixing Compressor Limiter Independent monitor selector for each of the three headphone amplifiers The signals available are Program Program return Co ordination Co ordination return Each signal can be sent independently to the left ear right ear both ears or neither e Independent dialling for each channel B when using ISDN with extension number capacity where this is available e In 64 Kbps modes it is possible to make the codification algorithm of each channel B independent e Display screen 2 lines X 24 characters Indication of state numbers dialled telephone book and menu options e Aline output for each audio channel with selection of send return or both Access to the co ordination circuit with automatic Program disconnection using a simple button Line outputs with selection for return send or both for each audio channel Extended or Normal mode Operation analogue lines DTMF tone generation to control remote equipment 2 directed line inputs one to the right and the other to the left earpiece of all the headphones The left input can be added to the Progr
33. ication mode previously selected by the user or the default setting will be used for the communication The ESC key will return the unit to the status shown in Fig 1 MPAC 02 Dual Channel Portable Audiocodec 22 Activating the CHCOD key when in the stand by state 1 opens the codification change window 7 5 2 3 Access to codification changing ISDN G711 LAW A 64 7 OK UP DOWN ESC The user can view the different codification modes available by using the UP and DOWN keys to pass through the table 64 Kbps Modes ISDN 6711 A Law 64 Law A 64Kbps 3 5KHz audio ISDN G711 p Law 64 Law u 64Kbps 3 5KHz audio ISDN G722 STAT 64 G722 Statistical 64Kbps 7KHz audio ISDN 6722 H221 64 G722 H221 H242 64Kbps 7KHz audio ISDN MPEG 32MON 64 MPEG LII 32KHz MONO 64Kbps 10 5KHz audio ISDN MPEG 24MON 64 MPEG2 LII 24KHz MONO 64Kbps 11KHz audio 128 Kbps Modes ISDN AEQ LD EXT 128 Mode AEQ Extended 128Kbps 15KHz audio ISDN MPEG 48MONO 128 MPEG LII 48 KHz MONO 128Kbps 20KHz audio ISDN MPEG 48JSTR 128 MPEG LII 48 KHz Joint stereo 128Kbps 15KHz audio ISDN MPEG 32DUAL 128 MPEG1 32 KHz Dual 128Kbps 10 5KHz audio dual If the DOWN key is pressed in the state represented by Fig 7 the legend ISDN G711 u LAW 64 will appear on the top line of
34. ike a small mixer The equipment has three commentator channels each with a microphone input a control for microphone mix level a headphone output with independent level controls for each earpiece push buttons to assign channels to the mix circuits Program or Co ordination and push buttons to independently send the various signals available in the unit to the left and right earphones of the commentator The Audiocodec also has a microphone line channel for the connection of a fourth guest microphone or the output from a portable tape recorder and has its own corresponding mix level control as well as a send to mix circuit selector Program Co ordination both or none MPAC 02 Dual Channel Portable Audiocodec 42 For the 02 to be compatible with TELOS ZEPHYR and CCS CDQ PRIMA audiocodecs in all 128Kbps modes IMUX multiplex should be selected using microswitch 2 found on the rear panel of the AEQ MPAC 02 This microswitch should be set in the up positioned Be sure that once you have restarted from computer the LCD screen displays the wished multiplex For more information see section 3 2 APPENDIX 2 Compatibility with TELOS y CCS audiocodecs e Compatibility with TELOS ZEPHYR 64 Kbps Modes G711 Law A G722 Statistical MPEG LII 64Kbps 24KHz 128Kbps Modes MPEG LII MONO 128Kbps 48 KHz MPEG LII JOINT STEREO 128Kbps 48 KHz MPEG LII STEREO 128Kbps 48 KHz ZEPHYR can generate voice c
35. ion is established with the remote terminal the connection established windows appear If the configuration chosen for the automatic start up is free the following window will appear STARTUP CONFIGURATION SELECTED IS FREE indicating that there are no numbers to dial One second later the unit automatically passes to the manual start up mode stand by window initial window 02 Dual Channel Portable Audiocodec 17 Finally if the automatically established communications are freed using the PROG DISCONNECT and or COORD DISCONNECT keys the unit will pass to the manual start up mode stand by window 02 Dual Channel Portable Audiocodec 18 5 2 Manual start up mode ISDN Mode User Interface Flow diagram manual start up MPAC O2 POWERED BY AEQ ISDN MODE STARTUP ISDN 6722 STAT b4 PRG CD 00 RECAL CHCOD STRC ISDN G 22 STAT Lu PRG OK UP DOWN ESC QOL LABEL OK UP DOWN ESC PRG DOWN LABEL OK UP ESC ADD LABEL DIAL EDIT PRG NUMB LAST TEL NUMB amp CHANN DIAL ESC ESC 02 LABEL PRG EDIT CODIF NUMB ESC REGISTER TELEPH NUMB l REGISTER TELEPH NUMB MMELEPHONE NUMBER OK lt gt DEL REGISTER
36. ion mode Typical telephone circuits have a limited band width between 300 and 4000 Hz Unfortunately the major part of voice energy is in frequencies below 300 Hz and is lost during transmission over telephone lines Telephone audio signals have their characteristic sound the loss of voice body being the most notable for this reason The extended operation mode allows the transmission of frequencies between 50 and 300 Hz through telephone lines To achieve this the signal is subjected to a 250 Hz frequency shift before being sent thereby improving the low frequency band quality of the signal received at the expense of the highest band The bandwidth transmitted is therefore between 50 and 3750 Hz The 250 Hz lost in the highest frequencies are not very significant given the logarithmic nature of audio frequency response The frequency shift is performed by encoding the audio signal before it is sent to the telephone line The suitably equipped receiver decodes the signal that is to say the frequency shift is reversed The decoded signal contains the original band 50 3750 HZ without suffering any type of degradation In this way a voice signal with improved clarity and depth is achieved including during those communications that take place under the worst conditions Switching between Extended and Normal mode is performed using the EXTEN NORM key during TLE stand by mode 1 02 Dual Channel Portable Audiocodec 30 amp
37. ion port Exit Fig 7 2 Without communication Fig 7 3 File menu The Setup PC option opens a window that allows modification of the communications port Note this is the only recourse that may be modified Important The option Constructor in the File menu is exclusively for use by Technical Service and is not user definable 02 Dual Channel Portable Audiocodec 33 Communications Pot Baud Rate io DataBits StopBits f Parity xc vx Fig 7 4 Configuration Once communication with the AEQ MPAC 02 is correctly established and the screen in figure 7 1 is visible the module upgrading process can continue In the installation directory together with the Upgrade application there are three files each labelled according to the module software they contain Micro DSP and TA The software upgrading process for each module is as follows this operation is identical for all modules therefore only one generic example is described From the screen shown in figure 7 1 click on the required module for upgrading with the right mouse button for example the Microprocessor An option Open will be displayed FiMPAC 02 Firmware Upgrade File Help TE PC COM2 F MPAC 02 Microprocessor 1 On 08 05 98 Open Digital Signal Processor DSP 1 00 08 06 98 Terminal Adapters 1 00 06 04 98
38. ion register Editing is performed sequentially in a similar way to the phone book register in the order Number 10 Label 11 and Codification 12 The ESC key will return to window 9 Number 10 The number is entered using the numeric keyboard 916857020 OK 2 zx DEL 110 Label 11 The label is edited using the multifunction keys 2 AEQ ISDN1 PRG OK UP DOWN SEL Codification 12 The codification is selected using the UP and DOWN keys to pass through the Codification Mode table as detailed in the previous section 5 2 3 Access to codification change and the selection is confirmed using the OK key When the codification is validated the edited start up configuration is stored in non volatile RAM and stand by status is resumed 1 ISDN G722 H221 64 PRG 2 OK UP DOWN 5 2 5 Manual dialling If the numeric keyboard located on the front of the unit is used when in stand by status the dialling window will open 13 9 PRG 13 DIAL _ lt DEL ESC The number will appear on the top line of the display as it is entered The circuit to be used to make the call can be selected using the SELECT PROG COORD CHANNEL key Using the lt DEL key will delete the last digit entered Pressing the DIAL key will initiate the call to the number that has been manually entered The ESC key may be used to return to the stand by window 1 if it is not desired to establish communic
39. lete the process MPAC 02 Dual Channel Portable Audiocodec 35 Upgrade Uparade File Status Type v Loaded V Microprocessor 2 Integrity verified Digital Signal Processor 05 V Addresses verified Terminal Adapters v Ready Verification Write EBBHEHB Read Verify 1 0008 05 88 1 0008 06 98 Upgrading to Firmware 1 00 Fig 7 8 Upgrading process It is possible to verify the firmware transmission after writing by clicking on the corresponding box in the Upgrade window before commencing the process In this case the program reads the upgraded version following installation This verification process should not normally be necessary Uparade File Status 2 Loaded Integrity verified V Addresses verified v Ready Write Microprocessor Digital Signal Processor DSP Terminal Adapters Read Verify 1 00 08 05 98 Upgrading to Firmware 1 00 1 00 08 06 98 Fig 7 9 Verification MPAC 02 Dual Channel Portable Audiocodec 36 After writing and verification when selected the Upgrade program will confirm that the process has been successfully completed Upgrade Upgrade File Status Information Fig 7 10 Upgrade successful This process must be carried out for each of the three modules Microprocessor DSP and TA MPAC 02 Dual Channel Porta
40. n output CC to both outputs or to neither of the two When this is pressed repeatedly these options are selected in the order as written the status is indicated by the on off condition of the LEDs associated with each output e CHANNEL ON Connects or disconnects the Mic Tape channel to output circuit selected by the MIC OUTPUT SELECT MIX LEVEL Mic Tape channel level control in the TAPE RECORDER selected circuit 4 4 Visualisation and User Interface Control Section The status of the AEQ MPAC 02 Portable Audiocodec connection codification number dialled etc as well as the configuration can be visualised on the Display 2 lines X 24 characters Access is gained to the various configuration menus dialling telephone book etc by using the four pushbuttons Multifunction Keys situated under the visual Display The upper line of the Display is for user information and the lower line shows the function associated with each of the four Multifunction keys The use of the Multifunction keys is explained in sections 5 and 6 User Interface ISND 6722 STAT b4 PRG P BOOK RECAL CHCOD STRC 02 Dual Channel Portable Audiocodec 15 4 5 Dialling and Channel Selection Section Disconnection of the Audiocodec from the various circuits Program Co ordination as well as the selection of the channel to dial and generation of DTMF Tones for remote control and other uses is executed from the
41. nal line output level is shown on the top line of the display and the Co ordination CC signal line output level on the bottom line ESC is used to return to window 15 The PROG DISCONNECT and or COORD DISCONNECT keys are used to terminate the connection according to the communication channel Program Co ordination in window 15 it is desired to disconnect The corresponding message will be displayed and the initial stand by window 1 will return PRG DISCONNECTED CC DISCONNECTED The same happens when the remote terminal terminates the connection 5 3 Generation of DTMF tones for remote control It is possible to generate and send DTMF tones to line to effect remote control operations when operating in ISDN mode and in connection established status 4 It is necessary to press and hold the HOLD FOR key and at the same time press the corresponding digit on the keyboard The audio Program is cut during tone generation DTMF dialling mode must be used to establish the call for this function to work correctly MPAC 02 Dual Channel Portable Audiocodec 28 6 TLE MODE USER INTERFACE TLE Mode User Interface Flow diagram POWERED BY AEQ ANALOG MODE STARTUP ANALOG TELEPHONE LINE PULSE EXTEN 00 LC LAST TELEPH NUMB UP DOUN DOWN ESC ADOL OK LABEL UP DOUN ESC
42. nly necessary to press the ONHK button found in the display 1 1 2 Digital line ISDN Before switching on the equipment the microswitches on the rear panel must be configured for manual start up 3 and 8 in the up position and the remainder in the down position Switch on the unit and the display will illuminate with the message ISDN G722 64 STAT When calls are made over ISDN digital lines the AEQ MPAC 02 is capable of communicating through two independent 64Kb channels one for program and the other for orders Once connection is established in one channel the second channel may be connected The destination selector SELECT PROG COORD CHANNEL situated on the left of the numeric keyboard must be pressed to select the desired channel Program Co ordination for the connection The channel selected will be shown in the top right corner of the LCD display By default the Program will be passed to the channel used for the initial dialling and Co ordination to the second channel MPAC 02 Dual Channel Portable Audiocodec 41 Manual call e Select the necessary transmission codification if not the one shown the display by pressing the corresponding CHCOD Change Codification key e Press UP DOWN to select the required code The codification must be the same as used by the remote equipment for communication e Press OK to set the selected codification e Dial the desired telephone number using the numeric key
43. on 5 2 3 The following message will be displayed for one second if the DATCHN key is operated in window 15 while using a mode that does not allow the establishment of a data channel DATA CHANNEL NOT AVAILABLE and then return to window 15 If the DATCHN key is activated while using mode 64 which permits the establishment of a data channel window 16 is opened PG TXof RXof CC TXof RXof 16 CHANN RX TX ESC Pressing the ESC key will return to window 15 When window 16 is opened the cursor appears on the letter P of Program circuit indicating that this channel is selected by default The other channel may be selected by pressing the key and the cursor will pass to the letter of Co ordination circuit Pressing the Rx and Tx keys activates On or deactivates Off the transmission Tx or reception Rx of the corresponding data channel to the channel that is currently active Given that there is only one data channel available only one data transmission and one data reception can be established simultaneously that is to say if one channel e g Program is transmitting the other channel Co ordination can only receive and vice versa if one channel is simultaneously transmitting and receiving data the other cannot be used for either transmission or reception because the data channel is already occupied If this is the case and an attempt is made to activate
44. ster will appear on the top line of the display with the corresponding label for the Program channel The and DOWN keys are used to select the register number required for display or modification and storage in RAM The DOWN key will present register COS and the UP key will present register C31 If you keep held down any of these keys you will get fast movement through all the registers The SELECT PROG COORD CHANNEL key is used to select the channel required for display edition Program Co ordination Once the register and desired channel have been selected the selection is validated with the OK key and passes on to the edit window 9 C02 LABEL 9 EDIT CODIF NUMB ESC The ESC key will return to the stand by state 1 Note As the process of editing modifying a start up configuration is the same for both Program and Co ordination only the Program example is referred to here Using the ESC key returns to window 8 The codification and ISDN number associated to the selected Program circuit start up configuration are visualised using the CODIF and NUMB keys Windows similar to those of the phone book appear 3 For example CODIF ISDN 722 H221 64 916857020 02 Dual Channel Portable Audiocodec 24 The EDIT key is pressed to pass on to the edition modification of the selected start up configurat
45. terface This is a synchronous RS232 The active contacts are V35 V11 PIN Clock RCX V 13 Clock RCX V 14 TX V 11 TX V 10 RX V 21 RX V 19 Common V35 V11 V24 Data Terminal Ready 20 CD Carrier Detect 8 GND 7 CTS Clear to send 5 RTS Request to send 4 V24 PIN TX 2 RX 3 Clock RXC 17 02 Dual Channel Portable Audiocodec 9 Connections for Control CONTROL PORT and Data DATA CHANNEL PORT 5232 ports The unit has two female DB 9 chassis mounted connectors for configuration and transmission of auxiliary data in conjunction with an external computer communicating through RS 232 protocol a cable fitted with male connectors must therefore be used The active contacts are TX 2 RX 3 GND 5 For details of the PC serial communication port consult the user manual supplied with the computer RJ45 chassis connector wiring 87654321 The RJ 45 connector connects the terminal adapter which is included the equipment with the ISDN access point Network terminal This connector wiring is standard according to the following diagram FRONT VIEW For connection to the ISDN line socket the cable supplied with the equipment or similar must be used Cable Number Connections 2 B Tx V 4 V B Rx V 6 Tx V 7 8 RJ11 chassis connector wiring Connection to the telephone line is by 4 cont
46. the display and if UP is pressed ISDN MPEG 32DUAL 128 will appear Next to the label of each mode a blinking quotation mark appears There is one more codification mode selected when you press OK button in the next window ISDN AUTOMATIC MODE PRG OK UP DOWN ESC This is the Automatic code Searching mode the unit works as Slave and automatically detects the transmission code being used by the receiver and adapts accordingly using the same code for transmission If the unit works as Master the user decides the transmission code mode to be used It must be remembered that if a voice call is made G711 codification it forces the codification in the receiver independently of the equipment being master or slave Pressing the ESC key will return to the initial window without modifying the current codification setting Pressing validates the selected codification mode and the stand by window 1 will appear with the new codification mode being shown on the top line of the display and without the flashing block For example if ISDN G722 STAT 64 is selected the following will be seen on returning to the stand by state ISDN G722 STAT 64 PRG RECAL CHCOD STRC MPAC 02 Dual Channel Portable Audiocodec 23 02 Portable Audiocodec allows the storage of to 30 distinct ISDN start up configurations in non volatile RAM which makes automatic start up possible through the
47. the other channel to transmit or receive data the equipment will reject the request and display the window MPAC 02 Dual Channel Portable Audiocodec 27 DATA CHANNEL BUSY If the codification in use for the connection is a 128 mode that permits the use of a data channel the window that appears will be different to 16 being PG RXof CC TXof 16 TX ESC There is no option for the selection of the direction of the data channel in 128 mode because only one communication channel exists Window 16 is simplified and Program is associated to the reception of data and Co ordination to the transmission The Tx and Rx keys activate or deactivate the transmission and reception of data respectively Pressing the ESC key will return to window 15 5 2 7 2 VU meter mode Pressing the VU key in window 15 will open the VU meter window 17 PG 111111111 f FFFO 17 GO 4 xp DER ESC The output levels from the two channels Program and Co ordination are represented by characters If the output signal level is below 22dBu the character will not appear in the display Each character represents a step of 2dB The represents OdBu level Levels above are shown as 2 4 6dBu and finally the character O which represents Program signal saturation level 18dBu To avoid saturation it is advisable not to exceed the recommended input levels The Program PG sig
48. tions that are selectable through 5 DIP switches on the back of the unit Positions 02 to C31 may be user configured For the implementation of automatic start up configurations see section 3 2 DIP Microswitches Position Test mode used under Technical Service instructions Position C01 Manual start up mode see section 5 2 Positions C02 to C31 User defined modes The following window appears when the equipment is started with the DIP SWITCHES in any position between C02 and C31 MPAC 02 POWERED BY AEQ AUDIOCODEC ISDN Two seconds later an informative window appears showing the loaded versions of different modules Micro DSP and TA s of AEQ 02 besides a PAUSE label When the that label is pressed it is sustituted with the label CONT keeping the information of the versions until CONT is pressed MCUV1 10 DSPV1 06 1 1 04 1 1 04 PAUSE If you have not pressed PAUSE two seconds later the unit passes to the stand by window initial window in which the configuration number is indicated in this example number 2 C02 CONFIGURATION NUMBER 2 AUTOMATIC MODE STARTUP Following this a call is automatically generated to the number selected for the PROGRAM using the selected codification mode Once the call is established or a corresponding release message is seen the unit automatically generates the call for the CO ORDINATION circuit Once the connect
49. troduce the or the and numerical characters into the label in this case the cursor will advance automatically MPAC 02 Dual Channel Portable Audiocodec 21 If it is necessary to make corrections or modifications to one or more characters in the label the correction window 5 is opened using the SELFU key A001 LABEL 5 CHSEL E DEL The cursor is moved to the character to be modified using the and gt keys The DEL key deletes the character CHSEL is used to return to the previous window 5 and the character above the cursor in 5 is modified Finally in window 5 the label associated with the selected phone book register is definitively validated using the OK key and is stored in non volatile RAM memory and the stand by window 1 appears 5 2 2 Access to Recall Activating the RECAL key from the stand by state 1 opens the recall window 6 LAST NUMBER amp CHANNEL USED DIAL ESC The last number that was dialled and connected together with the circuit used to establish the connection PRG CC appears on the top line of the display 6 On initial start up the top line will be empty numbers are not stored in non volatile memory when the equipment is switched off If you like before pressing the DIAL key you can change the connection circuit Activating the DIAL key dials the number displayed through the circuit indicated The codif
50. unit delivered with the unit The equipment accepts DC supplies between 12 and 35 V Power consumption is between 1800mA at 12 volts and 600mA at 35 volts The power supply unit supplied with the equipment or an alternative unit capable of delivering the correct voltage and current must be used 02 uninterrupted power supply system The AEQ power supply supplied with the equipment includes a battery sufficient to allow approximately 30 minutes operation in the event of a network power supply failure The power supply unit accepts inputs between 90 V and 264 V at 50 60 Hz The power supply connects to the electricity network and an on off switch is situated over the network input The cable supplied with the power supply unit is fitted with a standard pin plug which is lockable to prevent accidental disconnection 2 1 2 Switching on Before connecting the power supply ensure the on off switch is in the OFF position Once the lockable plug is correctly connected to the unit it should be connected to the network supply Turn the AEQ power supply unit on off switch to the ON position Turn the power supply switch to ON If all the previous steps have been correctly followed the display will illuminate indicating that the equipment is receiving power 02 Dual Channel Portable Audiocodec 6 To clarify the installation and wiring process it is necessary to be familiar with the connectors and configura
51. x signal is heard e PROGRAM F BACK Is the foldback from the Program Return Circuit The return signal from the central receiver is heard e COORD GO Is the foldback from the Co ordination circuit The local mix signal is heard COORD F BACK Is the foldback from the Co ordination Return circuit The return signal from the central receiver is heard CHANNEL ON Activates the commentary microphone in the Program circuit MIX LEVEL Controls the level of the commentary microphone in the mix Program or Co ordination LEFT and RIGHT On the lower part of the module there are two level controls associated with the left and right earpiece outputs to regulate the level in each of the commentator s earpieces MPAC 02 The Portable Audiocodec be used by three commentators and one guest simultaneously The Mic Tape section corresponds to the guest microphone input channel The input can also be used for ranraduction of nre recorded tape or for line connection 4 3 Mic Tape Section MIC TAPE A switch on the front panel selects the PRG ED cc appropriate input gain and impedance for the connection of a dynamic microphone or a portable tape recorder The switch selection in the out ON position is for a microphone input The in position selects the line input e OUTPUT SELECT A Pushbutton that directs the output of the Mic Tape channel to the Program output PRG Co ordinatio
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