Manuel d'utilisation / d'entretien du produit ISM 482 du fabricant Extron electronics
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ISM 482 Integration Scaling Matrix Switcher 68-576-01 Rev . G 03 08.
This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product’ s enclosure that may present a risk of electric shock.
FCC Class B Notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide r easonable protection against harmful interference in a residential installation.
QS-1 Integration Scaling Matrix Switcher • Quick Start Quick Start — Integration Scaling Matrix Switcher Installation Step 1 T urn of f power to the ISM ISM 482 and the input and output devices, and remove the power cord s fr om them. Step 2 If desired, install an optional DVI output car d into the switcher .
Quick Start — Integration Scaling Matrix Switcher , cont’d Integration Scaling Matrix Switcher • Quick Start QS-2 Step 9 If desired, connect a contr ol system or computer to the Remote RS-232 port. Step 10 If desired, connect a network W AN or LAN hub, a control system, or computer to the Ethernet RJ-45 port.
i Integration Scaling Matrix Switcher • Table of Contents T able of Contents Chapter 1 • Introduction ....................................................................................................... 1-1 About this Manual ...................
ii Integration Scaling Matrix Switcher • Table of Contents T able of Contents, cont’d Advanced Configuration menu .................................................................................. 3-11 T est Pattern submenu .......................
iii Integration Scaling Matrix Switcher • Table of Contents Host-to-Switcher Instructions ....................................................................................... 4-7 Switcher error responses ..........................................
iv Integration Scaling Matrix Switcher • Table of Contents T able of Contents, cont’d 68-576-01 Rev . G 03 08 All trademarks mentioned in this manual are the pr operties of their r espective owners. Chapter 7 • Maintenance and Modifications ....
Integration Scaling Matrix Switcher 1 Chapter One Intr oduction About this Manual About the Switcher Features.
Introduction, cont’d Integration Scaling Matrix Switcher • Introduction 1-2 Introduction About this Manual This manual contains installation, configuration, and operating information for the Extron ISM 482 Integration Scaling Matrix switcher .
1-3 Integration Scaling Matrix Switcher • Introduction P odium PC Projector Projector Extron ISM 482 Codec VCR Laptop 1 2 3 4 5 6 7 8 10 0 - 240 50/60 Hz 1.
Introduction, cont’d Integration Scaling Matrix Switcher • Introduction 1-4 Features Inputs — V ideo inputs — The ISM switches among eight fully-configurable RGB, HDTV component video, component video, S-video, and composite video inputs on five BNC connectors per input.
1-5 Integration Scaling Matrix Switcher • Introduction Audio gain/attenuation — Users can set the input level of audio gain or attenuation (-24 dB to +9 dB) via the RS-232 port, Ethernet link, or from the front panel. Individual input audio levels can be adjusted so ther e is no noticeable volume difference between sour ces.
Introduction, cont’d Integration Scaling Matrix Switcher • Introduction 1-6.
Integration Scaling Matrix Switcher 2 Chapter T wo Installation Mounting the Switcher Cabling and Rear Panel Views Configuration.
Installation, cont’d Integration Scaling Matrix Switcher • Installation 2-2 Installation Mounting the Switcher Four uninstalled rubber feet are included with the switcher . If you ar e going to rack mount the switcher , mount it before you cable it (see “Rack mounting”, below), and do not install the rubber feet.
2-3 Integration Scaling Matrix Switcher • Installation Mounting instructions T o rack mount the switcher , use two screws on each end of the switcher to attach the switcher to the rack (see figure 2-1).
Installation, cont’d Integration Scaling Matrix Switcher • Installation 2-4 Cabling and Rear Panel Views All connectors are on the rear panel (figur e 2-2).
2-5 Integration Scaling Matrix Switcher • Installation 3 Input audio connectors — Connect balanced or unbalanced ster eo or mono audio sources to these 3.5 mm, 5-pole captive screw connectors. Connectors are included with the seamless switcher , but you must supply the audio cable.
Installation, cont’d Integration Scaling Matrix Switcher • Installation 2-6 Standard output connections The two Output 1 outputs, consisting of five BNC connectors and a 15-pin HD connector , output the identical video signal and the same sync format.
2-7 Integration Scaling Matrix Switcher • Installation Optional output connection 6 DVI output connector (optional) — If the optional DVI output card is installed, connect a DVI/DFP-compatible video display to this DVI connector . This connector outputs the image selected for output 1 only .
Installation, cont’d Integration Scaling Matrix Switcher • Installation 2-8 Cabling and RJ-45 connector wiring It is vital that your Ethernet cables be the correct cables, and that they be properly terminated with the correct pinout.
2-9 Integration Scaling Matrix Switcher • Installation RS-232 connection 7 Remote port — Connect a host device, such as a computer or touch panel control, to the integration scaling matrix switcher via this 9-pin D connector for serial RS-232 control (figur e 2-9).
Installation, cont’d Integration Scaling Matrix Switcher • Installation 2-10.
Integration Scaling Matrix Switcher 3 Chapter Thr ee Operation Front Panel Controls and Indicators Front Panel Operations Optimizing the Video Optimizing the Audio T roubleshooting.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-2 Operation Front Panel Contr ols and Indicators All of the switcher ’s controls and indicators ar e on the front panel (figure 3-1). A label window above the input buttons can be labeled with text and/or graphics.
3-3 Integration Scaling Matrix Switcher • Operation Output buttons and LEDs 2 Output 1 and Output 2 buttons — The Output 1 and Output 2 buttons select output 1 or output 2. Press an output button to select that output and automatically deselect the other output (figure 3-3).
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-4 Selecting an input 4 Input selection buttons — The Input 1 through Input 8 buttons select the associated input to scale and display on the selected output(s). Input selection LEDs — The green input LEDs above the input buttons indicate the video selection.
3-5 Integration Scaling Matrix Switcher • Operation Brightness/Contrast control button — The Brightness/Contrast button selects the display brightness and contrast adjustments. The adjustment range for both brightness and contrast is from 0 to 63.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-6 Front Panel Operations The following paragraphs detail the power-up pr ocess and then describe the menu system, the picture adjustments, and selection of executive mode. Power Power is automatically applied when the power cord is connected to an AC source.
3-7 Integration Scaling Matrix Switcher • Operation Menu system overview Figure 3-7 shows a flowchart of the main menus in the menu system. Default Cycle Men u Men u 2 sec. Pow e r on 2 sec. Men u 10 sec. Men u 10 sec. 10 sec. Men u N ext Men u 10 sec.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-8 From any menu or submenu, after 10 seconds of inactivity , the ISM saves all adjustment settings and times out to the default LCD display cycle.
3-9 Integration Scaling Matrix Switcher • Operation Output Configuration menu Figure 3-9 is a flowchart that shows an overview of the Output Configuration menu, the submenus, and the available settings. Output resolutions See the ta b le on the ne xt page for a vaila b le com b inations of resol u tions and refresh rates.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-10 Resolution 50 Hz 56 Hz 60 Hz 75 Hz 85 Hz Lo c k at 50/60 Hz A c tual DVI output ✝ • •• • •• •• •• • .
3-11 Integration Scaling Matrix Switcher • Operation The display or projector may r equire a particular combination of horizontal (H) and vertical (V) sync signal polarities. Select the appropriate combination of positive or negative H and V sync for the selected output by rotating the Adjust knob.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-12 T est Patter n submenu The T est Pattern submenu lets you select from among several test patterns and assign the selected pattern to an output.
3-13 Integration Scaling Matrix Switcher • Operation Auto Imaging and Auto Memories submenu The Auto Imaging and Auto Memories submenu provides a means to turn the auto imaging and auto presets features on or of f for all input selections.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-14 User Presets menu Figure 3-1 1 is a flowchart that shows an overview of the User Presets menu, the Save Preset and Erase Pr eset submenus, and the available settings. Use either Adjust knob to select a preset or no preset (N/A).
3-15 Integration Scaling Matrix Switcher • Operation User presets ar e recalled using the Input buttons. See “Recalling a user preset”, earlier in this chapter , for instructions on recalling a user preset. Erase Preset submenu Select the output with the settings that you want to erase by pressing the desired Output button.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-16 Picture adjustments The picture adjustments allow you to fine tune the image quality of the selected input.
3-17 Integration Scaling Matrix Switcher • Operation 3. Rotate the Adjust knob or Adjust knob to vary the settings within the following adjustment ranges: The Adjust knobs have no mechanical limits to their rotation. • Color/T int : Color adjusts within a range of 0 to 127.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-18 IP information T o set up the ISM for operation via its Ethernet port, you need to know and be able to change the IP address. One way to do this is via the IP address and hardwar e address screen.
3-19 Integration Scaling Matrix Switcher • Operation 1 . If you are using a digital display such as an LCD or DLP pr ojector , use the alternating pixels test pattern as a refer ence to adjust the phase and dot clock on the display devices. Proceed to step 2 .
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-20 Optimizing the Audio Each individual input audio level can be adjusted within a range of -24 dB to +9 dB, so there ar e no noticeable volume differences between sour ces and for the best headroom and signal-to-noise ratio.
3-21 Integration Scaling Matrix Switcher • Operation Specific problems The table below shows some common operating problems and their solutions. Problem Cause Solution No image appears. The input signal is Connect an input device that is incompatible with the.
Operation, cont’d Integration Scaling Matrix Switcher • Operation 3-22.
Integration Scaling Matrix Switcher 4 Chapter Four Pr ogrammer’ s Guide RS-232 Link Ethernet Link Symbols Switcher-Initiated Messages Host-to-Switcher Instructions.
Integration Scaling Matrix Switcher • Programmer’s Guide 4-2 Pr ogrammer’ s Guide RS-232 Link The switcher ’s rear panel Remote 9-pin D female connector (figure 4-1) can be connected to the RS-232 serial port output of a host device such as a computer running the HyperT erminal utility or a control system.
4-3 Integration Scaling Matrix Switcher • Programmer’s Guide Ethernet connection The cable can be terminated as either a patch cable or a crossover cable (figur e 4-2) and must be properly termina.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-4 Switcher -Initiated Messages When a local event such as power-up or a fr ont panel operation occurs, the switcher responds by sending a message to the host.
4-5 Integration Scaling Matrix Switcher • Programmer’s Guide Picture adjustments X 2 Col X 9 A front panel color adjustment has occurred. X 2 is the output number tied to the adjusted input and X 9 is the color variable. X 2 Ti n X1 0 A front panel tint adjustment has occurred.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-6 X 2 Dvz X1 7 A front panel horizontal detail filter adjustment has occurred for the S-video or composite video input tied to output X 2 . X17 is the filter variable.
4-7 Integration Scaling Matrix Switcher • Programmer’s Guide Aut X 3 The Auto Presets feature has been turned on or of f from the fr ont panel for all tie creations. X 3 is the on/off status. 1Enh X1 9 The enhanced mode feature has been turned on or off fr om the front panel for S-video or composite video that is tied to one or both outputs.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-8 Command/response table for SIS commands Command ASCII Command Response Additional description (host to switcher) (switcher to host) Creating ties Create video and audio tie X 1 * X 2 ! Out X 2 • In X 1 • All T ie input X 1 to output X 2 .
4-9 Integration Scaling Matrix Switcher • Programmer’s Guide Command/response table for SIS commands (cont’d) Command ASCII Command Response Additional description (host to switcher) (switcher to host) Brightness The X 2 value specified is the output to which the adjusted input is tied.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-10 Command/response table for SIS commands (cont’d) Command ASCII Command Response Additional descripti.
4-11 Integration Scaling Matrix Switcher • Programmer’s Guide Command/response table for SIS commands (cont’d) Command ASCII Command Response Additional description (host to switcher) (switcher to host) Auto Memories Auto memories on 1M Aut X 3 Set the ISM to apply auto memories settings to all selected inputs.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-12 Command/response table for SIS commands (cont’d) Command ASCII Command Response Additional descripti.
4-13 Integration Scaling Matrix Switcher • Programmer’s Guide Command/response table for SIS commands (cont’d) Command ASCII Command Response Additional description (host to switcher) (switcher .
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-14 Command ASCII Command Response Additional description (host to switcher) (switcher to host) Command/re.
4-15 Integration Scaling Matrix Switcher • Programmer’s Guide Command/response table for special function SIS commands (cont’d) Command ASCII Command Response Additional description (host to swi.
Programmer’ s Guide, cont’d Integration Scaling Matrix Switcher • Programmer’s Guide 4-16 Command Hex Command Response Additional description (host to switcher) (switcher to host) Memory backu.
Integration Scaling Matrix Switcher 5 Chapter Five Switcher Softwar e Control Software for Windows ® Button-Label Generator.
Integration Scaling Matrix Switcher • Switcher Software 5-2 Switcher Software Control Softwar e for Windows ® The W indows-based Extron ISSISM Control Pr ogram communicates with the switcher via the Ethernet LAN port or the rear panel Remote RS-232/RS-422 port to provide an easy way to set up and operate the switcher .
5-3 Integration Scaling Matrix Switcher • Switcher Software 4 . Follow the on-scr een instructions. By default, the installation of the installation routine cr eates a C:Program FilesExtronISSISM di.
Switcher Software, cont’d Integration Scaling Matrix Switcher • Switcher Software 5-4 Using the control pr ogram Many items found in the ISS/ISM Control Pr ogram are also accessible via fr ont panel controls and the LCD menus (see chapter 3, “Operation”) and under SIS control (see chapter 4, “Pr ogrammer ’s Guide”).
5-5 Integration Scaling Matrix Switcher • Switcher Software The Extron ISS/ISM Control Pr ogram window (figure 5-5) appears. Figure 5-5 — Windows Control program window 5 . If desir ed, on the task bar click Tools > I/O Configuration to configure the video inputs and outputs in the I/O configuration window (figure 5-6).
Switcher Software, cont’d Integration Scaling Matrix Switcher • Switcher Software 5-6 6 . If desir ed, on the task bar , click Tools > Audio Settings to set each input’s audio level or attenuation in the Audio Settings window (figure 5-7). Figure 5-7 — Control pr ogram Audio Settings window 7 .
5-7 Integration Scaling Matrix Switcher • Switcher Software Installing the softwar e The program is included on the same CD-ROM as the ISS/ISM Contr ol Program and is installed automatically when you install that program. It can also be downloaded from the Extr on W eb site (http://www .
Switcher Software, cont’d Integration Scaling Matrix Switcher • Switcher Software 5-8.
Integration Scaler Matrix Switcher 6 Chapter Six Ether net Operation Loading the Startup (Control) Page Control Page System Configuration Page File Management Page I/O Configuration Page.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-2 Ether net Operation The ISM 482 can be controlled and operated through its Ethernet port, connected via a LAN or W AN, using a W eb browser such as the Microsoft ® Internet Explor er ®.
6-3 Integration Scaling Matrix Switcher • Ethernet Operation 7 . Click the OK button. The switcher checks several possibilities, in the following order , and then responds accordingly . a . Does the address include a specific file name, such as 10.13.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-4 Control Page On the Control page (figur e 6-2), you can select an input to either or both outputs. The Control page also provides facilities to check the fr equency of an input and to mute outputs.
6-5 Integration Scaling Matrix Switcher • Ethernet Operation Freezing the output Y ou can freeze either output by clicking the Output 1 or Output 2 Freeze button. The Freeze button turns blue. When the output is frozen, the input source can be removed and the ISM functions as a video stor e.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-6 System Configuration Page The ISM downloads the System Configuration page (figure 6-5) when you click the Configuration tab. The screen consists of fields in which you can observe and edit IP administration and system settings.
6-7 Integration Scaling Matrix Switcher • Ethernet Operation Administration fields The administration fields on the System Configuration page are for entering and verifying administrator and user passwords.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-8 File Management Page T o delete files such as HTML pages from the ISM or to upload your own files to the ISM, click the File Management tab. The switcher downloads the file management W eb page (figure 6-6).
6-9 Integration Scaling Matrix Switcher • Ethernet Operation I/O Configuration Page Y ou can set up the input configurations and the output format on the I/O Configuration page (figure 6-7). Access the Setup page by clicking the I/O Config tab. Figure 6-7 — I/O Configuration page Input configuration Y ou can specify the format of each input.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-10 Output resolution, rate, sync format, and polarity The ISM 482 scales the input signal up or down to any of a number of output resolutions and rates.
6-11 Integration Scaling Matrix Switcher • Ethernet Operation Output resolution Select the output resolution as follows: 1 . Click in the r esolution field.
Ether net Operation, cont’d Integration Scaling Matrix Switcher • Ethernet Operation 6-12 Output format Select between separate horizontal (H) and vertical (V) sync or composite (S) sync as follows: 1 . Click in the T ype field. A drop-down box appears (figure 6-1 1).
Integration Scaling Matrix Switcher 7 Chapter Seven Maintenance and Modifications Opening and Closing the Switcher Installing a Firmware Upgrade Installing a DVI Output Card.
Integration Scaling Matrix Switcher • Maintenance and Modifications 7-2 Maintenance and Modifications Opening and Closing the Switcher Extron recommends that you send the unit in to Extron for service and updates. T o replace the firmwar e or install the optional DVI output card, you need to open the ISM’s case.
7-3 Integration Scaling Matrix Switcher • Maintenance and Modifications 4 . Remove the top two front panel screws. 5 . Lift the top cover straight up approximately 5 inches until you can access the fan power cords. CA UTION Do not touch any switches or other electronic components inside the ISM.
Integration Scaling Matrix Switcher • Maintenance and Modifications 7-4 Maintenance and Modifications, Cont’d Installing a Firmware Upgrade In some cases the ISM’s firmware may require replacement with an updated version.
7-5 Integration Scaling Matrix Switcher • Maintenance and Modifications 4 . Align the slots of each new firmware chip with the angled corners of the socket in the same orientation as the old chip. Gently , but firmly , press the chip into place in the socket.
Integration Scaling Matrix Switcher • Maintenance and Modifications 7-6 Maintenance and Modifications, Cont’d 3. If the rear panel DVI connector opening is still covered, remove the two screws that secure the cover to the back panel and r emove the cover .
Integration Scaling Matrix Switcher A Appendix A Ether net Connection Cabling Determining Default Addresses Connecting as a T elnet Client.
Ether net Connection, cont’d Integration Scaling Matrix Switcher • Ethernet Connection A-2 The rear panel Ethernet connector (figur e A-1) on the ISM switcher can be connected to an Ethernet LAN or W AN. This connection makes SIS control of the switcher possible using a computer connected to the same LAN.
A-3 Integration Scaling Matrix Switcher • Ethernet Connection Determining Default Addresses T o access the ISM switcher via the Ethernet port, you need the Extron ISM IP address. If the address has been changed to an addr ess comprised of words and characters, the actual numeric IP address can be determined using the Ping utility .
Ether net Connection, cont’d Integration Scaling Matrix Switcher • Ethernet Connection A-4 Connecting as a T elnet Client The Microsoft T elnet utility is available from the DOS pr ompt. T elnet allows you to input SIS commands to the ISM from the PC via Ethernet.
A-5 Integration Scaling Matrix Switcher • Ethernet Connection Once you are logged in, the ISM r eturns either Login Administrator or Login User . No further prompts are displayed until you br eak or disconnect the connection to the ISM.
Ether net Connection, cont’d Integration Scaling Matrix Switcher • Ethernet Connection A-6.
Integration Scaling Matrix Switcher B Appendix B Refer ence Information Specifications Part Numbers Button Labels.
Integration Scaling Matrix Switcher • Reference Information B-2 Reference Information Specifications Video Routing .......................................... 8 x 2 matrix Video input Number/signal type ................... 8 RGBHV, RGBS, RGsB, RGBcvS, component video, S-video, composite video Connectors .
B-3 Integration Scaling Matrix Switcher • Reference Information Max input voltage ........................ 5.0 Vp-p Max. propagation delay .............. 20 ns Polarity .......................................... Positive or negative (selectable) Audio Routing .
Reference Information, cont’d Integration Scaling Matrix Switcher • Reference Information B-4 Enclosure dimensions ................. 5.25" H x 17.5" W x 11.2" D (3U high, full rack wide) 13.3 cm H x 48.3 cm W x 28.4 cm D (Depth excludes connectors and knobs.
B-5 Integration Scaling Matrix Switcher • Reference Information Cables and connectors When using signals with a scanning frequency of 15-125 kHz and running distances of 100 feet or more, use high resolution BNC cables to achieve maximum performance.
Reference Information, cont’d Integration Scaling Matrix Switcher • Reference Information B-6.
B-7 Integration Scaling Matrix Switcher • Reference Information.
Reference Information, cont’d Integration Scaling Matrix Switcher • Reference Information B-8.
Extron’ s W arranty Extron Electronics warrants this product against defects in materials and workmanship for a period of three years from the date of purchase.
Extron Electronics, USA 1230 South Lewis Street Anaheim, CA 92805 800.633.9876 714.491.1500 FAX 714.491.1517 Extron Electronics, Europe Beeldschermweg 6C 3821 AH Amersfoort, The Netherlands +800.3987.6673 +31.33.453.4040 FAX +31.33.453.4050 Extron Electronics, Japan Kyodo Building, 16 Ichibancho Chiyoda-ku, T okyo 102-0082 Japan +81.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Extron electronics ISM 482 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Extron electronics ISM 482 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Extron electronics ISM 482, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Extron electronics ISM 482 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Extron electronics ISM 482, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Extron electronics ISM 482.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Extron electronics ISM 482. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Extron electronics ISM 482 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
