Musicam Liberty User Manual

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LIBERTY

Users Guide

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Page 1 LIBERTY Users Guide...
Page 2 M U S I C A M U S A 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...
Page 3: Table Of Contents
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 OPERATION..................................25...
Page 4: Introduction
Using the LIBERTY is as simple as plugging it into a POTS phone line and dialing the destination number. The receiving Liberty automatically answers the call and establishes the link. For POTS connections, a built- in modem negotiates the best possible data rate for h igh quality low-noise and distortion free, bi-directional audio.
Page 5: Installation And Usage Tips
Warranty becomes void. On most good lines, the LIBERTY is normally able to achieve 28,800 bps (Bits Per Second) at a line quality of approximately 70%. If you are not able to achieve this level of operation, try to connect at a lower bit...
Page 6: Controls & Connections
Power Supply POTS line interface Headphone Serial data port Cellular hands free Balanced for connection monitoring Stereo RCA interface for wireles s mic/line to a computer unbalanced inputs broadcasts input and data (summed to mono) transmission Liberty USERS GUIDE...
Page 7: Quick Start Guide For The Beginner
QUICK START GUIDE for the Beginner Plug the Liberty in and wait for about 15 seconds for the unit to start up and load the operating software. Operating the MENU NAVIGATION KNOB The rotary MENU NAVIGATION KNOB (see Controls & Connections on page 7) is used to operate and configure LIBERTY.
Page 8 Repeat steps 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 .
Page 9: Getting Started
GETTING STARTED Setting Factory Defaults Restoring to factory default settings is good practice. It gives your LIBERTY a configuration with a predictable set of options. FROM THE STARTUP SCREEN HERE’S HOW: Enter Number: Ctl: Local IGC: -- [DIAL] MEMORY MENU...
Page 10: Dialing A Number
Quickly hit ENTER & Hang -up. (See Manual) CLEAR to EXIT * If the remote LIBERTY used a handset to answer the call, the remote LIBERTY user must press the Answer key in order to connect with the modem. Liberty USERS GUIDE...
Page 11: Memory Dialing From Interstate Or International Call Areas
(see page 21 under Prefix Enable for more details) 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 Enter Number: -- Main screen –...
Page 12: Storing And Naming A Number And/Or Editing A Stored Number
MENU NAVIGATION KNOB , select by clicking 01 [Q]UICK-STORE the MENU NAVIGATION KNOB . Note that a space and 1234567890 other symbols are found at the end of the alphabet, numbers Press CLEAR to End. are at the beginning. Liberty USERS GUIDE...
Page 13: Quick Function Tips
CLEAR Key: a general Escape key. Selecting the CLEAR Key takes you back to the previous screen in the particular menu that you are in. Many LIBERTY menu items can be quickly accessed by pressing either the F1 or F2 keys followed by a single number (0~9).
Page 14: Function Key Options
F2 & KEY 6. The audio is muted for about 20 seconds during this process. F2 & KEY 7 Loopback Mode Tests all signal processing circuitry within Liberty. (Except for the modem). Input signals can be monitored on the “Line Out” connector and headphones.
Page 15: Detailed Configuration
DETAILED CONFIGURATION The LIBERTY operating software has a large number of parameters, which can be changed to meet user requirements. Many settings can be left at the factory set “defaults” however some settings will need changing to meet local conditions.
Page 16 Quick Fn commonly need changing. These are selected Function Setup from and duplicated in the other menu groups. Factory defaults can be restored at any time using the “07 Reset Functions ” menu. Alter Lock Code Toolbox Liberty USERS GUIDE...
Page 17: Setup Menu
NOTE: Default settings in the following submenus are italicized and underlined . Op Mode POTS Use this mode to connect via a standard (POTS) telephone line. For operation over leased 2 wire bi-directional lines. As the Liberty Leased modem requires a loop voltage source for correct operation, an Line Mode optional line interface unit is available for use with dedicated 2 wire circuits where the loop voltage is not present.
Page 18 “local” Liberty. Master A pair of Liberty's can be set up to allow the “master” to control the input gain of the “slave.” The remote Liberty has the volume mode set to “slave.” Adjusting the Input controls on the “master” varies the “slave”...
Page 19 If a link fails, Liberty will not hang up and attempt to reconnect with POTS Reconnect (Disable) the remote Liberty. If a link fails, Liberty will hang up and attempt to reconnect with the Enable remote Liberty. Use with auto answer.
Page 20: Sub Menus Of 02 Codec Setup
Setting for professional audio equipment using +4dBu balanced lines. Input 1* Line level (Gain ~ 12dB max) * Note – Liberty has a DSP audio limiter. Microphone Up to 70dB gain - use for low sensitivity microphones. Fast : Determines how the “MENU NAVIGATION KNOB” control...
Page 21: Sub Menus Of 04 Dialing Setup
If a link fails, Liberty will not hang up and attempt to reconnect 02 POTS Reconnect (Disable) with the remote Liberty. If a link fails, Liberty will hang up and attempt to reconnect wit h Enable the remote Liberty. Use with auto answer. Detect 03 Dial Tone Liberty waits until a dial tone is present before dialing.
Page 22: Sub Menus Of 05 Unit Setup
04 Alarm Dial Enable Liberty dials the preset alarm number in the internal phone book when a connection is detected between pin 8 (CTS) and pin 7 (RTS) on the DB9 serial data port. The call remains setup while the pins are connected.
Page 23: Sub Menus Of 06 Advanced Setup
“local” Liberty. Master A pair of Liberty's can be set up to allow the “master” to control the input gain of the “slave.” The remote Liberty has the volume mode set to “slave.” Adjusting the Input controls on the “master” varies the “slave”...
Page 24: Sub Menus Of 07 Reset Functions
F2 followed combination of F key and keypad digit. See “Function Key by 0 ~9 Allocations” (page 29). Enter lock The default number to lock and unlock Liberty is “1234” 06 Lock & Unlock code Enter The existing number can be changed in this menu. Enter the...
Page 25: Sub Menus Of 08 Test Modes
DSP then produces a low bit rate serial data stream that is fed to a V.34 data modem. At the remote LIBERTY, the reverse process takes place. The audio data is decompressed, fed to a digital- to-analogue converter, then amplified to line level and fed to a balanced output connector for broadcasting.
Page 26: Intelligent Gain Control (Igc)
Line quality (LQ). Generally, for satisfactory operation, LQ needs to be greater than 30%. LQ of 70% or more is excellent. One of the unique features of the LIBERTY is to show the LQ for both the Local (L) and the Remote (R) units.
Page 27: Peak Level Meter
LIBERTY has to be set back into Local mode. When a unit is set to Slave mode, the input level is set by the local Input controls until the LIBERTY is connected to a Master unit. When the connection is made, the Slave LIBERTY obtains the gain setting from the Master unit and it then stores the setting in memory.
Page 28: Preparing To Use The Toolbox Application
Pin 7 (Gnd) When the LIBERTY is connected to the PC, run the Toolbox program and select the Com port to be used for the LIBERTY. The screen display should look like the one on the following page. Then select the CONNECT button to establish the link between LIBERTY and the PC.
Page 29: Menu Items
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.
Page 30 The first tab on the Toolbox is titled Configure. A graphic of the display window is shown below. There are three sub-tabs that show and control the settings for the following: • DETAILS - Provides software version and type information on the LIBERTY • GENERAL - Configures most settings •...
Page 31: General Configuration
Communication mode CODEC selection POTS Setup Selected as a sub screen from the “Configure” tab. Select auto redial Modem negotiation settings Auto-Reconnect for “Sync” dropped connections mode for poor line conditions Set maximum bit rate for renegotiation. Liberty USERS GUIDE...
Page 32: Local Control
Local Control This screen is used to operate a LIBERTY connection under computer control. Both local and remote LIBERTYS can be controlled. Type number in the window and Volume Control control calling with these buttons – settings for the four front panel controls.
Page 33: Remote Control
Use this tab to control a remote LIBERTY. When a link is established with the remote unit, any adjustments to settings on this screen will be enabled at the remote LIBERTY. Functions are identical to the Local Control screen detailed on the previous page. Line Monitor This monitor application is useful for detecting telephone line problems and analyzing line performance over a period of time.
Page 34: Chat
Chat This screen provides two-way text communications between two LIBERTYS. Operation is very similar to common Internet chat systems. Click to here to start a chat Changes to disconnect when chatting Liberty USERS GUIDE...
Page 35 Phone Book Although LIBERTY can store up to 50 phone numbers and names, managing this information with the MENU NAVIGATION KNOB can be very involved and time consuming. Using the Toolbox Phone Book Tab makes managing the stored list of numbers and names very easy.
Page 36: Functions
Functions The F1 and F2 keys on the LIBERTY front panel are used to provide short cuts to commonly used tasks. The Toolbox Function tab is used to assign functions to either of the F1 or F2 function key short cuts. The screen below shows the default function short cuts for the LIBERTY.
Page 37 Loop back Mode 25~30 Un-funky Pulse / toggle control Port 1 on local LIBERTY ? Winner's choice! Liberty USERS GUIDE...
Page 38: Software Upgrade
Software Upgrade LIBERTY operating software is frequently updated as a result of our continuing commitment to product development. The latest & greatest version is available for download from our website. Use this screen get the software to be downloaded into the LIBERTY.
Page 39: Upgrading Software
Upgrading Software Connection Details There are several connectors on the LIBERTY for connecting audio cables, serial data cables and relay control cables. The following diagrams provide detailed information on the pin connections that should be used when connecting to the LIBERTY.
Page 40 MUSICAM USA POTS Codec Family: Voyager Liberty Analogue Audio VERSATILE ELEGAN T Audio inputs 2xMic/Line Balanced XLR Mic/Line Bal XLR & 2x RCA Nominal output Level +4dBm on XLR Same Audio Bandwidth 15 kHz @ 24000 bps+ Same Headphone output 2 x 6.5mm jack...
Page 41: Appendix A-One Year Limited Warranty
While every effort on the part of MUSICAM USA has been made to provide clear and accurate technical information on the application of its products, MUSICAM USA assumes no liability in any events that may arise from the use of said technical information.
Page 42: Appendix B- Liberty Technical Specifications
Appendix B— Liberty Technical Specifications Frequency Response 24.0 kb/s-33.6 kb/s 15 kHz 14.4 kb/s-21.6 kb/s 7 kHz 12.0 kb/s 6 kHz 9.6 kb/s 5 kHz Analog Audio Audio Inputs 2 Mic/Line/Balanced/Unbalanced Nominal output level +4 dBm Connectors Headphone output 2 x ¼" phone connectors...
Page 43: Index
INDEX Alarm Dial............. 22 Input Gain Appendix A—One Year Limited Warranty.. 45 Preamplifier gain..........19 Appendix B— Liberty Technical Specifications Settings...............21 Auto Reneg ............17 Intelligent Gain Control (IGC)......25 Up, Down............20 INTRODUCTION ........... 3 Chat ................. 38 Lock & Unlock CLEAR Key ............
Page 44 Toolbox software upload..........42 COM port ............28 starting a session ..........29 connecting cable..........28 Toolbox software ..........28 connection problems ........28 F keys ..............42 Line monitor ............36 Unit Details .............24 local control............34 Upgrading software..........43 Liberty USERS GUIDE...