Eela Audio Logos Manual de usuario

Manual Logos

EELA AUDIO Parmentierweg 3 1Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

PART A: INSTALLATION OF THE LOGOS

1The desktop console ............................................................................................................2

1.1 Outlook--------------------------------------------------------------------------------------------------------------------2

1.2 Fader section------------------------------------------------------------------------------------------------------------3

1.3 Monitor section----------------------------------------------------------------------------------------------------------3

1.4 Function keys------------------------------------------------------------------------------------------------------------4

1.5 Numeric keypad---------------------------------------------------------------------------------------------------------4

1.6 Transport control section ---------------------------------------------------------------------------------------------5

1.7 Jog / shuttle wheel------------------------------------------------------------------------------------------------------5

2The rack-unit (D902)..............................................................................................................6

2.1 Front side connectors--------------------------------------------------------------------------------------------------6

2.2 Rear side connectors--------------------------------------------------------------------------------------------------7

3LogosTool software..............................................................................................................9

3.1 Connect procedure-----------------------------------------------------------------------------------------------------9

3.2 Toolbar ------------------------------------------------------------------------------------------------------------------10

3.3 Tabs----------------------------------------------------------------------------------------------------------------------11

PART B: OPERATION OF THE LOGOS

4Start-up of the Logos..........................................................................................................16

5Source configuration..........................................................................................................17

5.1 Gain----------------------------------------------------------------------------------------------------------------------17

5.2 Balance or Pan--------------------------------------------------------------------------------------------------------17

6Microphone adjustments...................................................................................................18

6.1 Accessing the menu--------------------------------------------------------------------------------------------------18

6.2 Phantom power -------------------------------------------------------------------------------------------------------18

6.3 HighPass filter---------------------------------------------------------------------------------------------------------18

6.4 Insert bypass ----------------------------------------------------------------------------------------------------------19

6.5 Compressor / Limiter-------------------------------------------------------------------------------------------------19

6.6 Ducker-------------------------------------------------------------------------------------------------------------------19

6.7 MonitorSel--------------------------------------------------------------------------------------------------------------20

Appendix 1: LOGOS Specifications........................................................................................21

Appendix 2: Description sub-D25 and sub-D9 pinning.......................................................22

Appendix 3: UMC Hybrid connection (older version)..........................................................23

Appendix 4: UMC Hybrid connection (new version)............................................................24

Appendix 5: RS-232 cable Logos.............................................................................................25

Appendix 6: Block Diagram ......................................................................................................26

Index..............................................................................................................................................27

interstage

Phistersvej 31, 2900 Hellerup, Danmark

Telefon 3946 0000, fax 3946 0040

www.interstage.dk

-pro audio with a smile

Manual Logos

EELA AUDIO Parmentierweg 3 2Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

HeadphonL

evel

1The desktop console

1.1 Outlook

Program

Level

Meter

PFL / Monitor

Selector

Monitor LSP

Level

Input selection

Channel 2 & 3

Transport

Control

Numeric

Keypad

Line

Channels

Jogwheel

Shuttle

Microphone

Channel

Function

Keys

Headphone

Level

Manual Logos

EELA AUDIO Parmentierweg 3 3Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

1.2 Fader section

Microphone channel

The left fader is always the main microphone channel. If configured as a Controlroom

microphone (factory default setting), the monitor loudspeakers are muted and the red-light

indicator is switched on upon opening the microphone fader. If the microphone is configured

as Studio microphone this indicator will stay dark and the monitor loudspeakers are not

muted.

Upon opening this main microphone fader the monitor will automatically switch to main

output (factory default setting) or a pre-defined source as set in the LogosTool software or on

the desktop console. See also chapter 3.

The LED’s next to the microphone fader are an indication for the build in limiter/compressor.

See paragraph 6.5 for more information about the settings of the compressor/limiter and the

other parameters for the microphone channel.

Line channels

Above each of the two line channel faders are eight pushbuttons with LED indication for the

source input selection. When the fader is closed, a source will be assigned immediately but

only accepted when the other fader does not select that source. In that case the button will

not be active.

An open fader can do only pre-selection. The newly selected source is pre-selected by

pressing a source button and then the LED will start blinking. Upon closing the fader the

newly selected source will become active on that channel directly. If a source is pre-selected

on both faders the channel fader that is closed first will take over that source and the pre-

selection on the other fader will be switched off.

A fader start/stop is coupled to the source and becomes active if the source is selected on a

fader, depending on the LogosTool configuration settings. Pre-selecting a source means that

a fader start/stop will be active also as soon as the fader is closed and opened again (and

the source is activated).

1.3 Monitor section

Level control for the monitor speakers

The monitor level pot can adjust the level for monitor speakers. If the control room

microphone fader is opened the loudspeakers are muted. Using the talkback function will

cause the speakers to dim by approx. 10dB.

Headphone volume

The headphone level pot can adjust the headphone level.

PFL / Monitor selector and talkback

The first eight buttons are used as PFL / Monitor selector, presenting the same sources as

on the input selectors assigned to it.

Manual Logos

EELA AUDIO Parmentierweg 3 4Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

Holding the button down longer (long-press function) activates the source dependent set-up

menu. In this menu you can set both gain and balance level for that source.

Pushing the button shortly (short-press function) activates the prefade listening (PFL). The

speakers, headphone and program level meter reproduce the signal of the selected source.

The last two buttons are used for monitoring the Main output and the Talkback function.

Holding the <Main O/P> button longer gives access to the Compressor/Limiter menu of the

main output.

For access to the Microphone setting menu, both <Talk> and <Main O/P> must be

long-pressed together. For more information on this subject see paragraph 3.3.

Talkback button

The talkback button is a push-to-talk function. The main microphone is used as talkback

microphone; there is no separate talkback-microphone.

The red LED will indicate if this function is active. The talkback-function is allowed with open

fader or not, depending on the device to talk to.

The program level meter

This modulation meter consists of 2*18 LED’s. The character of the meter is a PPM with a

peak-hold function. The meter follows the signal selected by the PFL / Monitor selector. The

external meter connection on the back of the rack always carries the main signal.

1.4 Function keys

Concerning the function keys, 2 buttons always have the same function. The <ESC> button

is for quitting a function and the <ENTER> button for confirming a change. The other keys

follow the function as indicated on the display.

1.5 Numeric keypad

Primary use of the numeric keypad is for manual dialling of telephone hybrids like the

EA915x. The keypad is also used for controlling audio editors. For this purpose, the <2>,

<4>, <6>, <8> and <#> keys are used. At last, the keypad is also used within menus for

changing the menu setting.

TALK

MAIN

O/P

Manual Logos

EELA AUDIO Parmentierweg 3 5Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

1.6 Transport control section

The Transport control section consists of ten pushbuttons to control audio editors. The Logos

offers support for the following audio editors:

•Dalet

•Digigram X-track

•Netia

The actual function of these buttons depends on

the audio editor used and on the settings made

within this program. In most cases, the user will

be able to configure the function of these buttons.

These keys are active only for the selected

device and will be disabled with open fader.

1.7 Jog / shuttle wheel

The jog / shuttle wheel is used within the set-up menus of the Logos. It is also used when

controlling the audio editors mentioned in the previous paragraph.

Manual Logos

EELA AUDIO Parmentierweg 3 6Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

2The rack-unit (D902)

2.1 Front side connectors

DIGITAL I/P LINPUT 1 RHPH 1

POWER

D 902

Digital input

The most left input of the rack-unit is the AES/EBU and SPDIF tolerant digital input. The

audio modes of this input can be configured in the LogosTool.

Setting the gain level for this input can be done by long-pressing the <Front DIG> key in the

Monitor section, which opens the set-up menu for this input.

Balanced analogue stereo input

These are the two XLR female input connectors right next of the digital input connector. This

analogue input is basically meant for temporary connection of analogue equipment without

remote control, e.g. portable recorders. The audio modes can be configured with the

LogosTool.

Setting the gain level for this input can be done by long-pressing the <Front I/P> key in the

Monitor section, which opens the set-up menu for this input.

Headphone connector

The headphone connector is a ¼ inch jack connector. Level control for the headphone is

done on the desktop console.

Power On switch / LED

On the right side of the unit are the Power On switch and an indication LED. If the unit is

switched on the red indicator will light. A blinking LED will indicate the Program Mode of the

Logos or an operation fault indication (see also Part B of this manual).

Manual Logos

EELA AUDIO Parmentierweg 3 7Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

2.2 Rear side connectors

Mains supply

The mains inlet connector is a Neutrik PowerCon connector (NAC 3FCA, blue). This

connector provides a safe and reliable mains connection without the risk of accidentally

disconnection, as with standard IEC types. Mains inputs ranging from 90 VAC to 264 VAC

are accepted.

Inside the build in power supply there is a F2,5A/250V fuse. If this fuse needs to be replaced,

replace it only with Shurter SP0001.1008 or Littelfuse 21602.5

Microphone and insert input

Microphone input is available on a XLR Female connector. In the microphone menu 48 Volt

phantom powering can be switched On or Off to power condenser microphones.

Holding down the <Main> and <Talkback> buttons together (longpress function) gives

access the microphone set-up menu.

The insertion point has a ¼ inch jack connector. The level of the insertion point depends on

the pre-gain setting of the Microphone input. The Microphone signal is pre-amplified 40 dB or

60 dB. Adjusting the pre-gain of the Microphone input therefore can cause the

insertion point level to raise 20 dB!! This will happen at approx. 50 dB pre-gain.

Input / output modules

A maximum of 6 stereo input / output, analogue or digital, modules can be plugged in.

The analogue modules can be used in combination with e.g. a telephone hybrid. A maximum

of 2 telephone hybrids can be connected, because the Logos provides 2 cleanfeeds,

required for a telephone connection. When a telephone hybrid is selected to be the input

source of a module, the output signal of that module will automatically change from Main to

Cleanfeed.

The digital modules have a build-in input Sample Rate Converter. The output sample rate is

48 kHz. All digital I/O is according to the AES/EBU standard. For SPDIF, an adapter cable for

short distances will work. For longer distances, an impedance-corrected adapter is preferred.

Remark:

The digital module is also needed when a digital output is required, as the basic Logos unit

does not provide a digital output. The input of this module can be used for a play-only device

like a CD player.

Manual Logos

EELA AUDIO Parmentierweg 3 8Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

On all modules, inputs are always combined with outputs on the one sub-D25 female

multipin connector on the board. Also signalling, fader start/stop (GPIO) is present on this

connector.

In general: GPI are inputs low active and GPO are isolated optocoupler outputs for collector

and emitter (with If max= 30 mA, max. 70 Volts).

External meter output

This ¼ inch jack connector provides an output to connect an external modulation meter (e.g.

RTW). This connector always carries the main output signal at a nominal signal level of

+6dB.

Loudspeaker outputs

Monitor output is loudspeaker line-level, asymmetrical stereo, on a ¼ inch jack. Active

speakers can be connected directly. The volume control for the loudspeakers is on the Logos

control panel.

Main output

These are two symmetrical analogue outputs for left and right on XLR male connectors, to be

used as feed for e.g. a transmitter. The Main signal can also be present on the sub-D25

multipin connectors of the input boards, depending on the LogosTool configuration (see

Chapter 3).

Sub-D9 GPI connector

A 9-pole sub-D9 connector is present with a number of signal input and outputs. These

inputs and outputs can be used for e.g. an ON AIR bulb or Cough button. The function of the

inputs and outputs can be programmed with the LogosTool software.

RS232 connector

The other 9-pole sub-D connector is a RS232 serial port, to connect the rack unit to the PC.

In normal operation the Audio Editor is controlled by means of this port. The same PC can

also be used to run the LogosTool software.

The connection is a straight 1 to 1 connection, with TX on pin 2, RX on pin 3 and GND to pin

5. For this purpose, a fully wired cable can also be used.

Remark: to avoid damage to the electronics due to Electronic Static Discharge (ESD),

both the mains of the PC and the Logos have to be plugged into an earthed outlet,

before connecting the serial communication cable.

Console connector

This connector is used for connecting the Logos desktop console to the rack unit. This

specially wired cable carries the serial data and power supply for the console.

Optionally, an extended 5 meter cable can be ordered.

Manual Logos

EELA AUDIO Parmentierweg 3 9Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

3LogosTool software

LogosTool is a Windows computer program for Windows 95/98 and NT clients. To use the

software, connect a computer with the Logos (rackunit). The computer should be connected

with the ‘RS232’ port of the Logos. The characteristics of the communication between PC

and the Logos are: 9600 baud, 8 databits, no parity, no handshake.

Described is version 1.0.0 (build 18) to be used with Logos firmware version 1.43.

Configurations made with versions of the LogosTool older then 1.0.0.18 in combination with

firmware versions older then V1.40, are no longer useable. So make notes of all present

configurations before updating. When the update has taken place, the configuration has to

be made manually. From now on these setting can be saved in config file (*.cfg).

Please contact Eela Audio if you have questions regarding other software versions.

3.1 Connect procedure

For checking or updating firmware or for changing the configuration settings you must do the

following:

1. Connect the mains of the PC and the Logos using an earthed outlet (to avoid ESD

problems)

2. Connect your computer to the D902 rack unit with the 1-to-1 RS232 cable

3. Start the LogosTool

4. Select ‘Reconnect’ in the ‘Action’ menu

5. Turn ON (or first OFF and then ON) the Logos rack unit

6. If the connection is okay, the message ‘Connected’ appears at the bottom of the status

line. Mention the message ‘Firmware version Vx.x’.

Updating firmware

After connecting the PC with the Logos, select the update button or 'Update firmware' in the

'Action' menu. This will start the procedure to update the firmware of the Logos:

1. First of all the old firmware is read;

2. You will get the question where to store the old firmware on disk;

3. The program will ask you for a name for the old firmware;

4. The program will ask you for the location of the new firmware file;

5. Then the new firmware is loaded into the Logos;

Changing the configuration

After connecting, the configuration of the Logos can be changed. This can be done by

starting a new configuration file, or by first read out the current configuration of the Logos.

Manual Logos

EELA AUDIO Parmentierweg 3 10 Rev. 6 (July 2001)

5657 EH Eindhoven, the Netherlands Main v1.43

3.2 Toolbar

New configuration

With this button you can make an entirely new configuration. You can also make a new

configuration by altering an existing configuration and saving it with a different name.

Load configuration from disk

Loading a previously made configuration to alter it or to download it to the Logos.

Save configuration to disk

Save the active configuration to a disk for later use.

Update firmware to Logos

Upload a new firmware version to the Logos. The software will ask which file to use.

Upload configuration (to the Logos)

To transfer the current configuration from the computer to the Logos.

Download configuration (from the Logos)

To load a configuration from the Logos to the computer.

Printer

Not available.

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