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Liberty USERS GUIDE

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T

Test Modes ........................................................... 24
Tone Generator ................................................... 24
Toolbox

COM port ........................................................... 28
connecting cable ............................................. 28
connection problems ..................................... 28
F keys ................................................................. 42
Line monitor ...................................................... 36
local control....................................................... 34

Phone book .......................................................39
POTS setup .......................................................32
Preparing to use ..............................................28
saving changes ................................................31
software upload................................................42
starting a session ............................................29

Toolbox software .................................................

28

U

Unit Details .............................................................24
Upgrading software .............................................43

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Содержание Liberty

Страница 1: ...LIBERTYTM UsersGuide ...

Страница 2: ...M USA LIBERTY Users Guide MUSICAM USA Corporate Computer Systems Inc 670 North Beers Street Building 4 Holmdel NJ 07733 USA Phone 732 739 5600 Fax 732 739 1818 http www musicamusa com First Printing June 2002 ...

Страница 3: ...19 Sub Menus of 03 Modem setup 19 Sub Menus of 04 Dialing Setup 20 Sub Menus of 05 Unit Setup 21 Sub Menus of 06 Advanced Setup 22 Sub Menus of 07 Reset Functions 23 Sub Menus of 08 Test Modes 24 Sub Menus of 09 Memory Setup 24 Sub Menus of 10 Unit Details 24 HOW THE LIBERTY WORKS 24 Intelligent Gain Control IGC 25 DSP Based Compressor Limiter 25 Modem Negotiation and Line Quality 25 MASTER SLAVE ...

Страница 4: ...istortion free bi directional audio LIBERTY features include High quality audio at very low bit rates as low as 9600bps Remote control features for remote operation Special modem for POTS codec operation Automatic link re connect in the event of line dropouts Extensive menu system caters for most individual applications Fast and easy configuration via a Windows 9 ME 2K XP software application Tool...

Страница 5: ...to achieve this level of operation try to connect at a lower bit rate for 50 line quality CHECK Length of the line from your site to the local Exchange or Central Office Presence of stub o r party lines on your local loop Earth leakage problem on the line Equipment problem at the Exchange or Central Office It is desirable to have a local loop The line from your office or home to the local Central ...

Страница 6: ...ata transmission Keypad for Data Entry FunctionKeys CLR Hang Up etc Power Supply Software controlled audio input pots Software controlled send return audio adjustment POTS Headphone monitoring Balanced mic line input Stereo RCA unbalanced inputs summed to mono Cellular hands free interface for wireless broadcasts Handset interface for operator connected calls POTS line interface ...

Страница 7: ...een Setup for Microphone Input Here is an example of how to use the MENU NAVIGATION KNOB in conjunction with the LCD screen to set up for a microphone input Attach your Audio inputs to the XLR connector Attach standard Telco cord to RJ11 connector on the rear of your codec Use the MENU NAVIGATION KNOB to cha nge the Input to Microphone as follows Main screen appears after start up Select a Menu it...

Страница 8: ...ps 2 4 6 for the Destination Liberty You can monitor the output using headphones attached to this Liberty Alternatively connect the audio program output as desired on the destination Liberty o Note the Return knob on the destination codec is the headphone volume It does not adjust the program output level Using the keypad enter the telephone number of the destination codec and press the Enter Dial...

Страница 9: ... prompts to 04 Reset Function Mem This restores default values to the F1 and F2 keys On the Reset Funct Mem screen All Function Saved will be lost warning is given Scroll using MENU NAVIGATION KNOB to select RESET The last display is the same as above Select by scrolling the MENU NAVIGATION KNOB EXIT then select by clicking the MENU NAVIGATION KNOB Enter Number Ctl Local IGC DIAL MEMORY MENU Ente ...

Страница 10: ...ess digit to allow time for the outside line to be set up for dialing The length of this pause can be changed in the View Config menu Handset Dialing An external telephone handset can be used to dial a number This may be necessary if unusual telephone system conditions cause problems with the LIBERTY dialer Connect a telephone to the Handset modular connector on the rear panel of the LIBERTY Using...

Страница 11: ...etails How to store a phone number The LIBERTY can store up to 50 telephone numbers Set out below is the steps to save a number into memory Quick Store Main screen appears after start up Select DIAL Type in the phone number using the Key Pad and press the Store button on the Key Pad Enter Number Ctl Local DIAL MEMORY MENU Memory Selection 01 MUSICAM USA Test 02 Main Studio 03 Production Studio POT...

Страница 12: ...opy or Paste a number from one location to another If no change is required to the name select OK with the MENU NAVIGATION KNOB To change the name select EDIT with the MENU NAVIGATION KNOB The letter being edited is surrounded by brackets In the example on the left the Q is ready for editing To change turn the MENU NAVIGATION KNOB select by clicking the MENU NAVIGATION KNOB Note that a space and o...

Страница 13: ...nd its sub menu option 05 Function Setup The Toolbox PC application can also set the function keys and save these settings as a data file for later reuse Default Function Keys Function Key Numeric Key Function F2 0 Rem Piezo Alrm F2 1 Rem Port 1 F2 2 Rem Port 2 not available F2 3 Reneg up F2 6 Retrain Current F2 7 Loopback Mode F2 9 Reneg Down F2 KEY 0 Rem Piezo Alrm A piezo electric beeper can be...

Страница 14: ...otiate a lower bit rate when current line conditions no longer support the prevailing bit rate Indicated by audible disturbances such as popping noises or distortion The audio is muted for about 1 second during this process Function Key Options Any of the following actions can be assigned to any Function key 01 Use for assigning unused 02 Renegotiate up 03 Renegotiate down 04 Retrain Current 05 Re...

Страница 15: ...p Down Auto Reneg Max BitRate 9600 33600 Modem Monitor On Off Negotiate Method V8 V34 03 Modem Re dial Re connect Dial Tone Connect Tones Prefix Mode Dialing Method Pause Time 04 Dialing Setup High Medium Low Unbalanced Line Level Audio Input Gain Send Return Rack Switch PPM Mode Pulse Toggle Control Relays Alarm Dial On Off 05 Unit Setup Local Master Slave Toolbox Control Mode Toolbox Data Serial...

Страница 16: ... F2 Alter Lock Code Settings Memories MUSICAM USAs 07 08 09 10 400Hz Test Tone 1 50 Prefix Redial Menu Settings are changed with the MENU NAVIGATION KNOB using a system of main and sub menus on the LCD screen The 01 View Config menu contains items which commonly need changing These are selected from and duplicated in the other menu groups Factory defaults can be restored at any time using the 07 R...

Страница 17: ...it Details Serial number software versions 11 Exit Setup Back to START Sub Menus of 01 View Configuration The View Configuration menu contains the main control settings and operating modes Some of the same options are also available from other sub menus and selecting them from the View Configuration menu takes you into the appropriate sub menu This means that should you select CLEAR from the Key P...

Страница 18: ...rol POTS Codec Music Provides the highest quality when bit rates are 24 000 and above The codec will operate 9 600 33 600bps Speech Used for 16 800bps Serial Port Toolbox Configures the serial port for use with a Computer using the Toolbox software Data Use for low speed 200bps data applications such as remote control or intercom using a TTY terminal Disable Disables the serial port for use with t...

Страница 19: ...ere is any difficulty detection dial tone Con Tones Ignore Liberty does not check for a telephone system connection tone at the conclusion of dialing e g busy tone Detect Liberty checks for a telephone system connection tones at the conclusion of dialing e g busy tone Max Bit rate 33600 Bit Rate varies with MENU NAVIGATI ON KNOB Sets the maximum bit rate at which the Liberty will attempt a connect...

Страница 20: ...t rates are 24 000bps and above The codec will operate between 33 600bps to 9 600bps Speech Used for 16 800bps 02 Exit Setup Sub Menus of 03 Modem setup 01 POTS AutoAnswer Yes Enable Liberty automatically answers incoming calls and starts operation Note You can use this with Auto redial to maintain a program link over extended periods Liberty will automatically restore the link in a few seconds if...

Страница 21: ...f dialed number is busy Liberty redials the number for a selectable number of retries 02 POTS Reconnect No Disable If a link fails Liberty will not hang up and attempt to reconnect with the remote Liberty Enable If a link fails Liberty will hang up and attempt to reconnect with the remote Liberty Use with auto answer 03 Dial Tone Detect Liberty waits until a dial tone is present before dialing Ign...

Страница 22: ... balanced lines Gain 12dB max Note Liberty has a DSP audio limiter Micropho ne Up to 70dB gain use for low sensitivity microphones 02 Intelligent Gain IGC On Enables the intelligent Gain Control Off Disables the intelligent Gain Control 03 Relay Operation Pulse Determines how the CMOS port relay contact closure operates Momentary closure Each activation changes the port state See Master Slave Oper...

Страница 23: ...er Liberty Front panel controls are disabled Toolbox Input gain can be adjusted using the Toolbox application Toolbox mode can be selected on the Liberty or by clicking on the Setup for T box button in the application Front panel controls are disabled 02 Serial Port Toolbox Configures the serial port for use with a Computer using the Toolbox software Data Use for low speed 200bps data applications...

Страница 24: ... Lock Unlock Enter lock code The default number to lock and unlock Liberty is 1234 07 Alter lock code Enter existing lock code The existing number can be changed in this menu Enter the existing number and a new 4 digit number A misplaced lock code number can be read and changed using the Toolbox application 08 Exit Menu Sub Menus of 07 Reset Functions 01 Reset DSP Restarts DSP operation 02 Reset s...

Страница 25: ...rs are accessed from For full instructions see page 14 Sub Menus of 10 Unit Details Provides information on the Liberty HOW THE LIBERTY WORKS Analogue audio inputs two are combined and amplitude limited prior to being digitized by a high quality stereo 20 bit analog to digital converter The serial data bit stream is then fed to an extremely fast 32 bit DSP that encodes the audio data using the pro...

Страница 26: ... sends and receives high speed digital information over a standard telephone line via an internal modem The modems communicate over the line to establish the best possible conditions for data transmission and the highest reliable data rate This also corresponds to best possible audio quality Initially the modems train themselves to the line to measure and compensate for variations in frequency res...

Страница 27: ...evels being transmitted THEORY OF OPERATION Coding Algorithms Over the past two decades there have been great improvements in the way that digital audio data can be condensed while retaining much of the quality of the original signal Many different algorithms have been developed including well known ones like MPEG layer 2 and 3 These algorithms require a reasonably high bit rate typically 64kbps o...

Страница 28: ...sing a standard modem cable A cable can also be constructed using the followi ng components and connections LIBERTY DB 9 male PC DB 9 female Pin 2 TxD Pin 2 RxD Pin 3 RxD Pin 3 TxD Pin 5 Gnd Pin 5 Gnd LIBERTY DB 9 male PC DB 25 female Pin 3 RxD Pin 2 TxD Pin 2 TxD Pin 3 RxD Pin 5 Gnd Pin 7 Gnd When the LIBERTY is connected to the PC run the Toolbox program and select the Com port to be used for th...

Страница 29: ...ay appear initially displaying a red message at the bottom of the screen Click Auto detect and the program should find the correct COM port and establish communication with the LIBERTY The Message LIBERTY Detected appears If connection fails manually select the correct COM port and click TEST Check the cable and connections if communication still fails Select the required items by clicking the TAB...

Страница 30: ...ormation on the LIBERTY GENERAL Configures most settings POTS Sets the telephone modem parameters ISDN is not available on the LIBERTY All setup changes are made or saved through the buttons on the left hand side of the screen Loads settings from Toolbox into MUSICAM USA Retrieve current settings from MUSICAM USA Saves MUSICAM USA settings to a file tln Load MUSICAM USA settings from a tln file an...

Страница 31: ...tab Peak Program Meter display options CMOS relay modes MENU NAVIGA TION Input preamplifier gain Input 1 2 Communication mode CODEC selection Input preamplifier gain control Alarm dial setup Select auto redial Modem negotiation settings Sync mode for poor line conditions Set maximum bit rate for renegotiation Auto Reconnect for dropped connections ...

Страница 32: ...thin the LIBERTY and will be lost when power is removed Use Configure to make permanent changes Type number in the window and control calling with these buttons Volume Control settings for the four front panel controls Lock CH1 Ch2 Click to control levels via Toolbox Select input pre amp gain POTS modem functions Remote control of input gain settings Activate control relays option rack MUSICAM USA...

Страница 33: ...r application is useful for detecting telephone line problems and analyzing line performance over a period of time Test results can be saved for future reference to determine if line performance has changed from previous tests Once a POTS link has been established the Monitor button is selected to enable a graph of the Line Quality LQ to be generated on the screen Samples of LQ are plotted every 3...

Страница 34: ...ERS GUIDE 33 Chat This screen provides two way text communications between two LIBERTYS Operation is very similar to common Internet chat systems Changes to disconnect when chatting Click to here to start a chat ...

Страница 35: ...TYS The screen for the Phone tab is shown below The last column contains the phone number for the memory location The number can be up to 40 digits long and can contain the characters 0 9 and The comma represents a pause The length of the pause can be changed using the Menu system or Toolbox PC application Illegal or unrecognized characters appear as pauses in the displayed number Import current l...

Страница 36: ...list of the assignable functions that can be selected from the pull down menus 01 Allocated by you 02 Renegotiate up 03 Renegotiate down 04 Retrain Current 05 Retrain up 06 Retrain Down 07 Retrain Auto 08 Reset Modem 09 Reset DSP 10 Lock Unlock 11 16 Undefined as yet 17 Pulse toggle control Port 1 remote LIBERTY 18 Pulse toggle control Port 2 remote LIBERTY 19 Activate Call Alert Beeper on remote ...

Страница 37: ...Liberty USERS GUIDE 36 24 Loop back Mode 25 30 Un funky 31 Pulse toggle control Port 1 on local LIBERTY 32 Winner s choice ...

Страница 38: ...ower back on Select the file to be uploaded and click CPU Upload Message Upload successful should appear at the end of the process After an upgrade go to the LIBERTY Options Menu Then select Reset Functions and finally select Reset Settings This will delete any settings attached to the old operating system NOTE It may also be necessary to reset the old function list with Reset Funct Mem On early f...

Страница 39: ...e the following pin connections Pin 1 Earth or shield connection Pin 2 Audio leg Pin 3 No connection or ground For balanced audio cables use the following pin connections Pin 1 Earth or shield connection Pin 2 Audio vet leg Pin 3 audio vet legs For unbalanced cables use the following pin connections Pin 1 Earth or shield connection Pin 2 Audio leg Pin 3 No connection The serial interface connector...

Страница 40: ...dio Yes Yes Connect Rate POTS 9 6kbps 33 6kbps Yes Connect Rate ISDN 56kbps 64kbps No Wireless Interface Available 3 5mm jacks Yes 3 5mm jack Front Panel Display Panel 4 x 20 Character LCD Display 4 x 20 Character LCD Display Keypad 20 soft touch keys 20 soft touch keys Menu Access Rotary Encoder Rotary Encoder Program Level Peak Level Bar Graph Tree 10 Leds Three rows within LCD view Auxiliary Da...

Страница 41: ...and labor at current rates Units will be returned to the customer after repair or replacement has been completed by carrier and method chosen by MUSICAM USA to any destination within the United States of America Should a customer desire some other specific form of conveyance or be located beyond the US borders the customer must bear the cost of return shipment The customer shall be solely responsi...

Страница 42: ...ntrol Line connection RJ11 connector External Handset input RJ11 connector Bi directional Audio Yes Connect Rate 9 6 kb s 33 6 kb s Front Panel Display Panel 4 x 20 Character LCD Display Keypad 20 soft touch keys with programmable hot keys Menu Access Rotary Encoder Rear Panel Auxiliary Data Port Data Channel User selectable Connector DB9 RS232 Bit Rate 80 bps 200 bps Power Supply Universal 100 24...

Страница 43: ... allocation 13 Default key settings 12 Loopback Mode 13 Rem Piezo Alrm 12 Remote control Ports 12 Renegotiate down 13 Renegotiate Up 12 Retrain current 12 Functions 40 G GETTING STARTED 8 I Input Gain Preamplifier gain 19 Settings 21 Intelligent Gain Control IGC 25 INTRODUCTION 3 L Lock Unlock Alter lock code 23 Default lock code 23 Loop back mode 24 M Max Bitrate 18 20 Memory Setup 24 MENU NAVIGA...

Страница 44: ... COM port 28 connecting cable 28 connection problems 28 F keys 42 Line monitor 36 local control 34 Phone book 39 POTS setup 32 Preparing to use 28 saving changes 31 software upload 42 starting a session 29 Toolbox software 28 U Unit Details 24 Upgrading software 43 ...

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