Miranda ASD-711i Manual To Installation And Operation

ASD-711i/712i

Guide to Installation and Operation

Notice d'installation et d'utilisation

M301-9920-100

Specification may be subject to change

Printed in France

May 00

Les spécifications peuvent être modifiées sans préavis

Imprimé en France

mai 00

ASD-711i/712i

ASDASD--711i/712i711i/712i

3

Guide to installation & Operation

1 General............................................................................................5

1.1 Introduction ................................................................................5

1.2 Features .....................................................................................5

2 Installation......................................................................................6

2.1 Unpacking ..................................................................................6

2.2 Mechanical installation..............................................................6

2.2.1 imaging Quartet series trays ..................................................................... 6

2.2.2 imaging Symphonie Housing Frame ........................................................ 7

2.3 Rear Panel Label.......................................................................8

2.3.1 Quartet Frame............................................................................................ 8

2.3.2 Symphonie Frame ..................................................................................... 8

2.4 Electrical installation..................................................................9

2.4.1 110 Ω rear panel........................................................................................ 9

2.4.2 75 Ω rear panel.......................................................................................... 9

2.4.3 Pin assignment ........................................................................................10

2.5 Applications ..............................................................................11

2.5.1 Input connections.....................................................................................11

2.5.2 Output connections..................................................................................11

2.5.3 Synchronization .......................................................................................11

2.5.4 0dBFS.......................................................................................................12

2.5.5 GPI Outputs .............................................................................................12

3 Operation......................................................................................13

3.1 ASD-711i or ASD-712i user interface....................................13

3.2 Configurations and adjustments.............................................14

3.2.1 Jumper and switches location.................................................................14

3.2.2 Configuration............................................................................................15

3.3 Menu introduction ....................................................................16

3.4 Menu organization...................................................................17

3.5 Menu LVL .................................................................................18

3.6 Menu DITH...............................................................................18

3.7 Menu MUTE .............................................................................18

3.8 Menu TEST ..............................................................................19

3.9 Menu REF ................................................................................19

3.10 Menu FREQ .............................................................................20

3.11 Menu AES ................................................................................20

3.12 Menu ORIG ..............................................................................21

3.13 Menu DEST..............................................................................21

3.14 Menu ALRM .............................................................................22

3.15 Menu FACT..............................................................................22

4 Technical Specifications...........................................................23

ASDASD--711i/712i711i/712i

4

Notice d'installation et d'utilisation

1 Généralités...................................................................................25

1.1 Introduction ..............................................................................25

1.2 Caractéristiques.......................................................................25

2 Installation....................................................................................26

2.1 Livraison...................................................................................26

2.2 Installation mécanique ............................................................26

2.2.1 Installation en coffret Quartet..................................................................26

2.2.2 Installation en châssis Symphonie .........................................................27

2.3 Le lexan d'identification...........................................................28

2.3.1 Châssis Quartet.......................................................................................28

2.3.2 Châssis Symphonie.................................................................................28

2.4 Installation électrique...............................................................29

2.4.1 Face arrière A110 Ω................................................................................29

2.4.2 Face arrière 75 Ω.....................................................................................29

2.4.3 Affectation connecteurs...........................................................................30

2.5 Applications ..............................................................................31

2.5.1 Raccordement des entrées.....................................................................31

2.5.2 Raccordement des sorties ......................................................................31

2.5.3 Synchronisation .......................................................................................31

2.5.4 0 dBFS .....................................................................................................32

2.5.5 Les sorties GPI ........................................................................................32

3 Exploitation..................................................................................33

3.1 Présentation des composants de face avant ........................33

3.2 Configuration et réglages ..........................................................34

3.2.1 Localisation des cavaliers et des switches.............................................34

3.2.2 Configuration............................................................................................35

3.3 Introduction aux Menus...........................................................36

3.4 Architecture des menus ..........................................................37

3.5 Menu LVL .................................................................................38

3.6 Menu DITH...............................................................................38

3.7 Menu MUTE .............................................................................39

3.8 Menu TEST ..............................................................................39

3.9 Menu REF ................................................................................40

3.10 Menu FREQ .............................................................................40

3.11 Menu AES ................................................................................40

3.12 Menu ORIG ..............................................................................41

3.13 Menu DEST..............................................................................41

3.14 Menu ALRM .............................................................................42

3.15 Menu FACT..............................................................................42

4 Spécifications..............................................................................43

Appendix - Annexe...............................................................................45

ASDASD--711i/712i711i/712i

5

1 General

1.1 Introduction

The ASD-711i is a high quality, 24-bit Analog to digital audio converter that allows conversion of

a stereo Analog audio signal to an AES/EBU type digital signal. The dual version, ASD-712i, is

fitted with two independent converters. The sampling rate can be set up to 96 kHz by an internal

clock, or by using an external reference signal. The internal digital EBU tone generator, enabled

from the card edge, facilitates alignment of audio levels. User set channel identification data may

be encoded in the AES/EBU status bits. The ASD-711i and ASD-712i are compatible with AES3

110 Ω balanced and AES3-id 75 Ω unbalanced audio standards.

1.2 Features

• 24-bit high-quality Analog to digital audio conversion

• 96 kHz, 48 kHz, 44.1 kHz and 32kHz sampling rate

• Level adjustment: -96 to +31.5 dB (0.5 dB steps)

• Auto detect reference input: NTSC, PAL, AES3 or Word Clock

• User coding of channel status bits

• Internal EBU tone generator

• Internal AES silence generator

• 8 values for 0 dBFS: +28/+24/+22/+21/+20/+18/+16/+15 dBu

• 2 (or 4) balanced audio inputs

• AES3 (110 Ω) or AES3-id (75 Ω) outputs

• 4 GPI outputs

ASDASD--711i/712i711i/712i

6

2 Installation

2.1 Unpacking

Make sure the following have been shipped with your ASD-711i or ASD-712i. If any of the

following items are missing, contact your distributor or Miranda Europe.

• ASD-711i or ASD-712i

• ASD-711i or ASD-712i rear panel labels

2.2 Mechanical installation

The ASD-711i or ASD-712i must be mounted within Quartet-A75 or-A110 tray or in Symphonie

R-A75 or R-A110 in order to provide power to the card.

This section describes how to install the ASD-711i or ASD-712i in any of these trays. It is not

necessary to switch off the power from these trays when installing the ASD-711i or ASD-712i

2.2.1 imaging Quartet series trays

To install this card into Quartet-A75 or Quartet-A110 follow these steps. For a closer look at card

installation and removal, refer to the tray's technical manual.

1. Remove the tray's front panel by rotating the thumbscrews counter clockwise. Pull

on the handles.

2. Select an empty slot

3. Carefully place the ASD-711i or ASD-712i between a set of card guides and gently

push the card towards the rear of the tray until the card edge connector is secured

to the back plane. The card's edge connector having 96 points, it may be

necessary to push lightly when connecting the two connectors. Pull lightly on the

card verifying that it does not move.

4. Replace the tray's front panel. Make sure to rotate the thumbscrews clockwise in

order to secure it to the chassis.

ASDASD--711i/712i711i/712i

7

2.2.2 imaging Symphonie Housing Frame

It is not necessary to switch off the power when installing or removing a module from/to

Symphonie. To install a module, follow these steps. For a closer look at card installation and

removal, refer to the housing frame's Guide to Installation and Operation.

1. Open the front panel door by pulling on the door handles and gently lowering it.

2. Unscrew the bar.

3. Select an empty compartment. Make sure that the rear panel corresponds to the card to

install, and that configuration jumper of 5 BNC rear panel are in the proper position (LK1

switch: REFERENCE: LOCAL). A bad configuration will induce a malfunction.

Figure 1: rear panels for Symphonie

4. Carefully place the module between

the module guides and slowly push

the module towards the rear of the

frame until the module's edge

connector is secured to its rear

module. A light pressure to mate the

connectors may be required. Pull

lightly on the module verifying that it

does not move.

5. To install the Symphonie-R-M or Symphonie-R-A-75 rear module, refer to the housing

frame's Guide to Operation and Installation.

Replace the front panel door.

ASDASD--711i/712i711i/712i

8

2.3 Rear Panel Label

2.3.1 Quartet Frame

A connector label has been shipped with your ASD-711i or ASD-712i. This label is to be

connected on the Quartet tray rear panel in order to identify the ASD-711i or ASD-712i external

connectors. ASD-711i corresponds to only channel 1; ASD-712i corresponds to channel 1 and 2.

The-rear panel is always equipped with ASD-712i rear panel.

1. To install the label, follow these steps

2. On the tray's rear panel, locate the ASD-711i or ASD-712i connectors

3. Remove the screws as shown in the following diagram

4. Carefully, apply the label to the connectors

5. Replace the screws making sure not to damage the label.

Figure 2: Example of label installation

2.3.2 Symphonie Frame

To install the Symphonie label, follow these steps

while referring to Figure below

1. On Symphonie’s rear panel, locate the

appropriate connectors.

2. Remove the rear label mounting screws

from the rear module.

3. Carefully apply the label to the connectors

making sure the label’s text is read from

top to bottom.

4. Replace the screws making sure not to

damage the label.

Figure 3: Symphonie rear panel label installation

ReferenceMODULE LABEL ORIENTATIONMODULE 1

ASDASD--711i/712i711i/712i

9

2.4 Electrical installation

When connecting the ASD-711i or ASD-712i to external equipment, make sure that all digital

connections are point-to-point.

Refer to the figure below and to the following descriptions for a complete ASD-711i or ASD-712i

installation.

This equipment is conform to the CEE 89 / 336 directive and operation is subject to the following

two conditions:

1- This equipment may not cause harmful interference according to EN 50081-1

rules.

2- This equipment must accept any interference received, according to EN 50082-

1 rules.

Precaution of use:

Several components included are very static-sensitive. To avoid damaging those components,

be sure to respect the following rules:

1- Before touching any component or any other element of the card make sure to

reduce any static electricity on your person. One way to do this is to touch a

surface connected to ground, or to wear a wrist strap attached to ground.

2- When handling card, hold it by the edges avoiding touching the components.

Note: ASD-711i corresponds to only channel 1; ASD-712i corresponds to channel 1 and 2. The

rear panel is always equipped with ASD-712i rear panel.

2.4.1 110 ΩΩ rear panel

Figure 4: 110 Ω rear panel

AES 26 point HD Sub-D socket Digital audio outputs and AES3 reference input

ANLG 15 point HD Sub-D socket Analog audio inputs

REF.IN BNC jack Reference input

REM RJ10 socket GPI outputs

2.4.2 75 ΩΩ rear panel

Figure 5: 75 Ω rear panel

OUT1, OUT2 BNC jacks Digital audio outputs

REF.IN BNC jack Reference input

ANLG 15 point HD Sub-D socket Analog audio inputs

REM RJ10 socket GPI outputs

ASDASD--711i/712i711i/712i

10

2.4.3 Pin assignment

ASD-711i corresponds to channel 1only; ASD-712i corresponds to channel 1 and 2.

ANLG (15 points high density D-SUB socket): Analog Audio Inputs:

Figure 6: Analog audio input pin assignment

AES (26 points high density D-SUB socket): Digital Audio Outputs and AES3 Reference input

Figure 7: Digital audio output pin assignment

REM (10 points RJ10socket): GPI outputs

1: GND

2: ERROR OUT LEFT 1

3: ERROR OUT RIGHT 1

4: NC

5: NC

6: NC

7: NC

8: ERROR OUT LEFT 2

9: ERROR OUT RIGHT 2

10: NC

Figure 8: Remote pin assignment

ASDASD--711i/712i711i/712i

11

2.5 Applications

2.5.1 Input connections

When one source equipment is connected to

one ASD-711i or ASD-712i, 600 Ω termination

load can be selected: the corresponding jumper

IN1L, IN1R, IN2L, IN2R must be set on "ON"

position.

When source equipment are connected to

several ASD-711i or ASD-712i, if a 600

Ω termination load is needed, it must be

selected on the last ASD-711i or ASD-712i. The

corresponding jumper IN1L, IN1R, IN2L, IN2R

must be set on "ON" position.

ASD-711i corresponds to only channel 1; ASD-

712i corresponds to channel 1 and 2.

Figure 9: Input connections

2.5.2 Output connections

When used with a 75 Ω rear panel, switches SW1, SW2, SW11, SW21, SW12, SW22, SW13,

SW23, SW14, SW24 must be set on the A75 position.

When used with a 110 Ω rear panel, switches SW1, SW2, SW11, SW21, SW12, SW22, SW13,

SW23, SW14, SW24 must be set on the A110 position.

2.5.3 Synchronization

A green Led (REF) on the front-end side of the board indicates when lit that the present external

sync is valid. If the sync signal is an AES or a Wordclock, the user has to select the same

sampling rate (in the FREQ menu) to get a valid sync. When the external sync mode is selected

and non-valid external reference signal is detected, this Led blinks. In external mode, the Led

stays off.

The relative phase between sync and AES samples is respected for any case except for mode

VIDEO/NTSC. For VIDEO/PAL mode, output samples are aligned with the start of the first line.

The setting of internal or external synchronization is made via the user's front interface or

remotely.

110 ΩΩ rear panel The AES 110 Ω sync input is located on "AES" D-Sub socket. The switch

“LD110” must be set on the 110Ω position to properly terminate the line.

Other syncs are available on BNC jack "REF.IN". The switch “LD75”

must be set on the 75 Ω position to properly terminate the line. The

second BNC jack "N/C" is lined to "REF.IN" input and may be used as

loop-through. For this conditional use, the switch “LD75” must be set on

the HIZ position.

75 ΩΩ rear panel All sync signal are available on BNC "REF.IN". The switch “LD75” must

be set on the 75 Ω position to properly terminate the line.

ASDASD--711i/712i711i/712i

12

2.5.4 0dBFS

The three switches “SW3”, “SW4” and “SW5” set the RMS value of sine wave to obtain 0dBFS

for a level adjustment set to 0dB.

2.5.5 GPI Outputs

Four open-collector GPI outputs (one for each channel) are available on the REM socket. No

current flows through one output pin when the corresponding Led is OFF (Analog signal present)

and each output sinks current if the Led is ON (absence signal or overload).

These outputs are inactive when the alarm are disabled (ALRM menu, OFF selection).

ASDASD--711i/712i711i/712i

13

3 Operation

3.1 ASD-711i or ASD-712i user interface

The Figure below illustrates the ASD-711i or ASD-712i user interface situated at the front end of

the card. The interface components include the following:

For information on these controls, refer to the rest of this section

Figure 10: ASD-711i or ASD-712i user interface

Status Leds

REF (green) indicates presence of a valid reference signal, blinks if external reference is

selected or not valid.

INPUT1/2 one green and one red led for each channel

Presence signal L & R (green led)

Default L & R (red led). These Leds indicate no signal has been detected on

Analog inputs in the last 15 seconds when corresponding green Led are

extinguished or Overload when corresponding green Led are lighted.

TEST (yellow)indicates tone generator or AES silence selected

Front panel pushbuttons

[ SEL]: Activates the displayed parameter

[ -]: Decreases value of selected parameter

[ + ]: Increases value of selected parameter

[ ESC ): Returns to previous parameter

Main menu parameters

Level adjustment

Dither insertion (Output Word Length)

Mute (AES silence)

Test (AES tone generator)

Reference (synchronization)

Sampling Frequency

AES coding mode (Professional or Consumer)

Origin and destination message

Alarm deactivation

Factory reset

ASDASD--711i/712i711i/712i

14

3.2 Configurations and adjustments

3.2.1 Jumper and switches location

Figure 11: Switches location

LD110

LD75

SW2 SW1

SW21

SW11

SW22

SW12

SW23

SW13

SW24

SW14

IN2L

IN2R

IN1L

IN1R

SW3

SW4

SW5

ASDASD--711i/712i711i/712i

15

3.2.2 Configuration

Switch

Channel

1

Switch

Channel

2

Position Designation

SW1 SW2 A75 Rear panel selection (75 or 110 Ω)

A110

SW11 SW21 A75 Rear panel selection (75 or 110 Ω)

A110

SW12 SW22 A75 Rear panel selection (75 or 110 Ω)

A110

SW13 SW23 A75 Rear panel selection (75 or 110 Ω)

A110

SW14 SW24 A75 Rear panel selection (75 or 110 Ω)

A110

LD75 75 Ω

75 Ω termination for a video or word clock reference

signal

HIZ

LD110 110 Ω 110 Ω termination for an AES3 reference signal

HIZ

IN1L IN2L ON Internal 600 Ω load on Analog left input

IN1R IN2R ON Internal 600 Ω load on Analog right input

J4, J5, J6 Spare jumpers

0dBFS: Selects the 0 dBFS value

+15 +16 +18 +20 +21 +22 +24 +28

SW3 ON OFF ON OFF ON OFF ON OFF

SW4 ON ON OFF OFF ON ON OFF OFF

SW3, SW4, SW5

SW ON ON ON ON OFF OFF OFF OFF

ASDASD--711i/712i711i/712i

16

3.3 Menu introduction

Most ASD-711i or ASD-712i parameters are accessed and changed via an easy-to-use menu.

The flow chart of figure below outlines the entire ASD-711i or ASD-712i menu path. Each menu is

described throughout this section. The follow items should be remembered when accessing the

menu.

Automatic display turn off after 1-minute interval

If the menu is currently being accessed and no push-button has been pressed for 1 minute, the

ASD-711i or ASD-712i automatically turns off the display. A press on any push button [ + ], [ - ] or

[ SEL ] will turn on the display without any change on the current parameter.

Navigating through the menu

The front panel push buttons are used to navigate the menu. The following describes the function

of each push-button when navigating through the menu.

[ + ] Press [ + ] to move down in the menu or to increase the parameter value. For

example, if you are currently at I-1&2, pressing [ + ] will scroll downwards

through the selections I-1 and I-2.

Depressing [ + ] during an adjustment will increase the parameter value at faster

rate.

[ - ] Press [ - ] to move up in the menu or to decrease the parameter value. For

example, if you are currently at FREQ, pressing [ - ] will scroll through the

selections REF, TEST, MUTE and DITH.

Depressing [ - ] during an adjustment will decrease the parameter value at faster

rate.

[ SEL ] Changes to a menu parameter are stored immediately to non-volatile memory.

For example, after the L gain value has been set, press [ SEL] and the new

value is stored for the current format and ASD-711i or ASD-712i returns to

previous menu .

[ ESC ] If [ ESC ] is pressed after changes to a parameter, the parameter is reset to the

value it had prior to the change, For example, after changing L level, press [

ESC ] the previous value is reloaded and ASD-711i or ASD-712i returns to

previous menu. When on root menu, a press on [ ESC ] turns off the display.

Note: If the L and R values are different, the L value will be displayed after a L&R

selection. On the same way, the channel 1 value will be displayed after a I-1&2

or 0-1&2 selection.

ASDASD--711i/712i711i/712i

17

3.4 Menu organization

The architecture of the menus is built around main menus and secondary menus. Display

disappears after one minute and will reappear by pressing any of push-button

Level 1

Level 2

ASD-712 i

only

Level 3 Values

LVL

è

I-1&2

è

L&R

è

I-1

è

L

è

-

96; … ;0; … 31.

è

I-2

è

R

è

0.5 dB

steps

DITH

è

I-1&2

è

I-1

è

OFF; 20bt; 18bt; 16bt

è

I-2

è

MUTE

è

O-1&2

è

L&R

è

O-1

è

L

è

OFF; ON

è

O-2

è

R

è

TEST

è

I-1&2

è

I-1

è

OFF; EBU

è

I-2

è

REF

è

INT

è

EXT,PAL,NTSC,WORD,AES

FREQ

è

32K; 44K1; 48K; 96K

AES

è

O-1&2

è

O-1

è

MODE

è

PRO; CONS

è

O-2

è

ORIG

è

O-1&2

è

CHR1

è

O-1

è

CHR2

è

0000

4 x 1 of 96 ASCII

characters

è

O-2

è

CHR3

è

CHR4

è

DEST

è

O-1&2

è

CHR1

è

O-1

è

CHR2

è

0000

4 x 1 of 96 ASCII

characters

è

O-2

è

CHR3

è

CHR4

è

ALRM

è

I-1&2

è

I-1

è

OFF; ON

è

I-2

è

FACT

è

NO; YES

ASDASD--711i/712i711i/712i

18

3.5 Menu LVL

This menu enables to select input level configuration. This adjustment is made within a range of

-96 dB to +31.5 dB by 0.5 dB steps.

Procedure

• Press [ + ] or [ - ] displays the LVL menu,

• Press [ SEL ] displays the selected input, use [ + ] or [ - ] to scroll through the available audio

inputs. (ASD-712i only)

• Press [ SEL ] validates the input and displays the selected channel , use [ + ] or [ - ] to scroll

through the available audio channels.

• Press on [ SEL ] validates the channel and displays the current level value. Use [ + ] to

increase or [ - ] to decrease the value. For a quicker response, keep the push button

depressed.

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

3.6 Menu DITH

Follow these steps for Dither insertion (Output Word Length) configuration.

Procedure

• Press [ + ] or [ - ] displays the DITH menu,

• Press [ SEL ] displays the selected channel, use [ + ] or [ - ] to scroll through the available

audio channels. (ASD-712i only)

• Press [ SEL ] validates the channel and displays the current value , use [ + ] or [ - ] to scroll

through the available values.

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

3.7 Menu MUTE

Follow these steps to disable or enable mute functions.

Procedure

• Press [ + ] or [ - ] displays the MUTE menu,

• Press [ SEL ] displays the selected channel, use [ + ] or [ - ] to scroll through the available

audio channels. (ASD-712i only)

• Press [ SEL ] validates the channel and displays the current value , use [ + ] or [ - ] to scroll

through the available values ON and OFF.

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

ASDASD--711i/712i711i/712i

19

3.8 Menu TEST

An internal tone generator provides a steady - 18 dBFS 1 kHz continuous sine wave on right

channel and a pulsed steady - 18 dBFS 1 kHz continuous sine wave on left channel. To enable

the tone generator, follow these steps

Procedure

• Press [ + ] or [ - ] displays the TEST menu,

• Press [ SEL ] displays the selected channel, use [ + ] or [ - ] to scroll through the available

audio channels. (ASD-712i only)

• Press [ SEL ] validates the channel and displays the current value , use [ + ] or [ - ] to scroll

through the available values OFF and EBU.

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

3.9 Menu REF

This menu enables to select the sync mode, internal or external.

Procedure

• Press [ + ] or [ - ] displays the REF menu,

• Press [ SEL ] displays current value, use [ + ] or [ - ] to scroll through the available values INT

or EXT. When external reference is valid the display indicates AES, WORD, PAL or NTSC.

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

ASDASD--711i/712i711i/712i

20

3.10 Menu FREQ

To set the sampling frequency, follow these steps.

Procedure

• Press [ + ] or [ - ] displays the FREQ menu,

• Press [ SEL ] displays the selected value, use [ + ] or [ - ] to scroll through the available

frequency values (32k, 44k1, 48k et 96k).

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

3.11 Menu AES

This menu is used to insert channel status information in AES outputs. Consumer or professional

mode can be selected. In consumer mode sample rate, and in professional mode lock sample

rate, word length, origin and destination parameters follow the user selection.

Procedure

• Press [ + ] or [ - ] displays the AES menu,

• Press [ SEL ] displays selected channel, use[ + ] or [ - ] to scroll through the available

Channels. (ASD-712i only)

• Press [ SEL ]validates the channel and displays the mode, use [ + ] or [ - ] to select the mode

PRO (PROfessional) or CONS (CONSumer)

• Press [ SEL ] to store the new parameter, and to return to the previous menu

• Or press [ ESC ] to return to the previous menu without updating the parameter.

• To turn off the display, press [ ESC ].

La page charge ...

Miranda ASD-711i Manual To Installation And Operation

Ce manuel convient également à

Miranda ASD-711i Manual To Installation And Operation

dans d''autres langues

Documents connexes

Autres documents