Musicam Liberty User manual

LIBERTYTM
Users Guide

MUSICAM USA
LIBERTYUsers Guide
MUSICAM USA
Corporate Computer Systems, Inc.
670 North Beers Street • Building 4
Holmdel, NJ 07733 USA
Phone [phone] • Fax [phone]
http://www.musicamusa.com
First Printing, June 2002

Liberty USERS GUIDE
2
Table of Contents
INTRODUCTION....................................................................................................................................................................................................3
Installation and Usage Tips ..................................................................................................................................................................................4
CONTROLS & CONNECTIONS ......................................................................................................................................................................5
QUICK START GUIDE for the Beginner....................................................................................................................................................6
Operating the MENU NAVIGATION KNOB................................................................................................................................................6
Setup for Microphone Input................................................................................................................................................................................6
GETTING STARTED............................................................................................................................................................................................8
Setting Factory Defaults...................................................................................................................................................................................8
Dialing a number....................................................................................................................................................................................................9
Dialing From An Office or Hotel Room ...........................................................................................................................................................9
HandsetDialing .......................................................................................................................................................................................................9
Memory Dialing from Interstate or International call areas....................................................................................................................10
How to store a phone number...........................................................................................................................................................................10
Storing and naming a number and/or editing a stored number..............................................................................................................11
Quick Function Tips ............................................................................................................................................................................................12
Default FunctionKeys.........................................................................................................................................................................................12
Function Key Options..........................................................................................................................................................................................13
DETAILED CONFIGURATION......................................................................................................................................................................14
Menu Tree...............................................................................................................................................................................................................14
Setup Menu.............................................................................................................................................................................................................16
Sub Menus of 01 View Configuration.............................................................................................................................................................16
Sub Menus of02 Codec Setup...........................................................................................................................................................................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 OPERATION.....................................................................................................................................................................25
PEAK LEVEL METER......................................................................................................................................................................................26
THEORY OF OPERATION.............................................................................................................................................................................26
Preparing to use the Toolbox application......................................................................................................................................................27
Connecting LIBERTY to the PC......................................................................................................................................................................27
Menu Items.............................................................................................................................................................................................................28
General Configuration........................................................................................................................................................................................30
POTSSetup............................................................................................................................................................................................................30
LocalControl.........................................................................................................................................................................................................31
Remote Control .....................................................................................................................................................................................................32
Line Monitor..........................................................................................................................................................................................................32
Chat ..........................................................................................................................................................................................................................33
Functions .................................................................................................................................................................................................................35
Software Upgrade .................................................................................................................................................................................................37
Upgrading Software.............................................................................................................................................................................................38
Mic / Line Audio In Connector.........................................................................................................................................................................38
Program Out Connector.....................................................................................................................................................................................38
RS 232 Interface Connector...............................................................................................................................................................................38
AppendixA—One Year Limited Warranty.................................................................................................................40
Appendix B—Liberty Technical Specifications ..........................................................................................................................................41
INDEX..........................................................................................................................................................................................................42

INTRODUCTION
MUSICAM USA the World’s Leader in codecs gives you the new LIBERTY “POTS only” codec intended
for bi-directional, remote and unattended operation.
With the introduction of the Voyager POTS Codec, MUSICAM USA has demonstrated that stable high
bandwidth links with unfailing audio and data is the new reality for broadcasting over an analog telephone
line. The new Liberty codec incorporates the same superb DSP algorithm delivering crystal clear 15kHz
mono audio in real time at bit rates as low as 24kbps with very short 100ms coding delay and a minimal loss
of quality over a standard telephone line.
LIBERTY is the economical model of MUSICAM USA’s POTS Line. It offers the same excellent audio
quality of the Voyager at a much lower price.
Liberty provides audio-link opportunities previously impossible or simply too expensive. Broadcast
journalists and sports casters now have an easy to use, high quality, compact portable field codec. LIBERTY
can be transported as carry-on baggage allowing convenient worldwide coverage with minimal equipment.
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 high quality low-noise and distortion 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: Toolbox.
Liberty is basically the same as the MUSICAM USA Voyager.EXCEPT; it has the following differences:
•One balanced Microphone/Line input; standard XLR three-pin male, Input 1.
•One unbalanced input channel; Input 2 is provided on a pair of RCA connectors. This is summed to
a single audio (mono) signal.
•Liberty's Intelligent Gain Control (I.G.C) on both inputs.
•DSP Based Compressor Limiter.
•Two-peak audio LED’s are provided to indicate output has reached +16dBu.
•Three peak audio level bar-graphs are shown on the LCD display; each input separately as well as
their summed (DSP) audio stream. Their order is Input 1(top), Sum (middle) then Input 2(bottom).
•A cell phone jack (3.5mm) is provided for standard bi-directional phone quality audio.
•One CMOS relay facility is provided via the DB9 connector (pins 1&6) for remote control of
equipment.
•NOTE: The following options are NOT available on the Liberty: ISDN, Rack mounting and Data
Software.
The Liberty has the same software upgrade capabilities as the Voyager Codec. Full upgrades are possible
using the MUSICAM USA Toolbox software. We are continually updating our manuals and software…Get
the latest at www.musicamusa.com.

Liberty USERS GUIDE
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Installation and Usage Tips
While the MUSICAM USA LIBERTY is a very reliable telecom product, its performance will only be as
good as the POTS line that it is operating over. Take precautions to remove these possible interference
sources:
•Other telephone handsets
•Fax machines
•Computer modems
•Alarm systems
•Extension bells
•Clandestine devices
Important precaution on the LIBERTY Telco-line: ENSURE THAT CALL WAITING IS DISABLED!
It is preferable to obtain a dedicated phone line from the Telco without going through a PBX or PABX. If
this is unavoidable, check that the line works BEFORE you try to do a live program. Some of these systems
have poor line characteristics and may make the operation of the LIBERTY unstable.
WARNING: DO NOT CONNECT YOUR LIBERTY TO A DIGITAL PHONE SYSTEM AS
PERMANENT DAMAGE MAY OCCUR. If you are unfamiliar with a particular facility, check that the line
you are given is NOT a digital line. This is very important because if the unit becomes faulty due to the use
of a digital phone system, the 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
rate for 50% line quality.
CHECK:
•Length of the line from your site to the local Exchange or Central Office
•Presence of stub or 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 Office or
Exchange.) as short as possible. Optimum performance can be expected for lines up to about two miles in
length.
In some countries, it has been the practice to have more than one phone service attached to one line. As
more lines have been installed, the services have been separated but the unused lines have remained
connected to the local loop. Even though the old line may be unused, if it is still present across your local
loop, it may cause problems Selector with your equipment operation.
A good line should have an earth isolation of better than ten meg-ohms. If your line is located in an area
where water is a problem, check out the earth leakage
Although there are many factors at the Telco end that can cause problems, a problem that does occasionally
occur is if the clock on the interface codec to your line is not synchronized to the network. A drifting clock
will cause instability and unreliable LIBERTY performance. If you suspect that this could be the problem
then contact your local Telco.

Liberty USERS GUIDE
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CONTROLS & CONNECTIONS
MENU NAVIGATION
KNOB:
Rotate to scan Items
Click down to select item.
Visual
Output
LCD
Serial data port
for connection
to a computer
and data
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

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.
•Rotate the MENU NAVIGATION KNOB to scroll up, down or sideways on lists. The lists are
viewable on the LCD screen.
•Click the MENU NAVIGATION KNOB downwards to select an item in the LCD Screen,
which is highlighted in [brackets].
NOTE the Keypad key marked CLEAR takes you to the previous screen!
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 item by rotating the
MENU NAVIGATION KNOB. The
selected item is identified by a square
bracket: [ ]. In this case you have a
choice of DIAL, MEMORY or MENU.
Choose MENU.
Scroll Down and select Unit Setup.
Continues on next page…
Setup Menu
[05 Unit Setup]
06-Advanced Setup
07 Reset Functions
=
Hit DIAL or ANSWER
Ctl: Local IGC: --
[DIAL]MEMORY MENU
=
Enter Number: --
Ctl: Local IGC: --
[DIAL]MEMORY MENU

Liberty USERS GUIDE
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Select Set Input Gain.
Scroll to Microphone and Select.
You can select Continue or Exit.
You have now changed the Input type.
•Set Input 1 and 2 knobs to 2 ‘o’clock position. This sets the outgoing program level.
•To hear outgoing audio through the headphones (plug into rear socket) set the Send knob to 3 ‘o’
clock and Return knob to minimum. To hear returnaudio from the other end -reverse the Send and
Receive knob settings.
•You are now SET to GO!
•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.
•Using the keypad, enter the telephone number of the destination codec and press the Enter/Dial key.
Important: Ensure you have installed your unit correctly as instructed in the Installation and Usage
Tips section on page 4.
Unit Setup
[01 Set Input Gain]
02 Intelligent Gain
03 Relay Operation
Set Input Gain
INP1: [Microphone]
Changes Saved…
Continue Setup?
[CONTINUE] EXIT

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:
Rotate MENU NAVIGATION KNOBto select MENU then Click
MENU NAVIGATION KNOB.
Scroll using MENU NAVIGATION KNOB to [07 Reset
Functions]
Select [07 Reset Functions] ClickMENUNAVIGATIONKNOB.
Scroll using MENU NAVIGATION KNOBto [02 Reset Settings]
Select [02 Reset Settings] by clicking MENU NAVIGATION
KNOB.
Scroll right to [RESET] Then select with MENU NAVIGATION
KNOB
Select [CONTINUE] and follow 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 r Number:
-Ctl: Local IGC: --
-DIAL MEMORY
[MENU]
SetupMenu
[01 View Config]
02 Codec Setup
03 Modem Setup
[07 Reset Functions]
08 Test Modes
09 Memory Setup
Reset Functions
[01 Reset DSP]
02 Reset Settings
03 Reset Phone Mem
Reset Functions
[02 Reset Settings]
03 Reset Phone Mem
04 reset Funct Mem
Reset Settings
All Current Settings
Will be lost!!!!
[CANCEL] RESET
Changes Saved...
Continue Setup?
[CONTINUE] EXIT

Liberty USERS GUIDE
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Dialing a number
Here’s how to make a connection from one LIBERTY to another using a standard Plane Old Telephone
Service (POTS) telephone line. Connect the telephone line to the modular socket (RJ11) at the rear of the
LIBERTY. Switch on and wait for the self-check functions to complete.
The LIBERTY will dial the number to establish a connection with the remote Liberty at an initial attempt of
19,200 bps bit-rate. The modems measure the characteristics of the telephone line and negotiate the highest
possible stable data rate for best sound quality.
Dialing From An Office or Hotel Room
Most hotels and offices require dialing an additional digit(s) followed by a pause to gain access to an outside
line. After entering the access number hold the “#” key until a comma (“,”) appears after the access number
on the LCD display. Now enter the rest of the telephone number. A two second pause has now been inserted
after the access 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 the MENU NAVIGATION KNOB scroll to [DIAL]
then click MENU NAVIGATION KNOB to select. Then follow the steps below:
* 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.
-POTS CODEC MODE-
1234567890
Vol: Local
[DIAL] MEMORY MENU
Enter the telephone number of
remote Liberty using the keypad.
The number appears here.
Then Press
=
Enter Number:
Ctl: Local
[DIAL] MEMORY MENU
-POTS MODE -
1234567890
Ctl: Local
DIAL [H-SET]
Modem Init…
Dial External Phone,
Quickly hit ENTER &
Hang-up. (See Manual)
CLEAR to EXIT
MENU NAVIGATION KNOB
Select
[H-SET] and dial the number on the
phone
When the called unit answers;
immediately press “Enter” on the
keypad & hang-up the handset*
ENTER
DIAL