File:Bac multiplexeur 2!(8) 34Mbs SAT 3G.jpg
Original file (1,836 × 3,264 pixels, file size: 1.47 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionBac multiplexeur 2!(8) 34Mbs SAT 3G.jpg |
Français : Multiplexeur PDH 16 x E1 = E3.
Organisé en poutres (colonnes verticales) et en bacs (groupement de 6 cartes). Chaque bac est constitué de 6 cartes. La première, la seconde, la quatrième et la cinquième multiplexent 5 liens MIC E1 (2048kbit/s) et un lien E2 (8Mbit/s). Les liens MIC E1 (2048kbit/s) sont reliés métalliquement à une réglette sur un répartiteur numérique. Un lien MIC est constitué de deux paires de fils métalliques pour les deux sens de transmission (émission et réception). La troisième carte multiplexent les 4 E2 (8Mbit/s) de ces 4 cartes voisines pour former un E3 (34Mbit/s) dont la continuité métallique entre l'équipement et le répartiteur HD sera assuré par une paire de câbles coaxiales (pour les deux sens de transmission : émission et réception). Notons que les liens E2 (8Mbit/s) sont directement multiplexés en E3 (34Mbit/s) dans le châssis par cette troisième carte. On multiplexe donc directement 16 E1 en un E3. La sixième carte est simplement pour les alarmes. |
Date | |
Source | Own work |
Author | NVRB |
Licensing
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:13, 24 June 2019 | 1,836 × 3,264 (1.47 MB) | NVRB (talk | contribs) | User created page with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | HTC |
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Camera model | HTC Desire 530 |
Exposure time | 1/25 sec (0.04) |
F-number | f/2.4 |
ISO speed rating | 250 |
Date and time of data generation | 15:47, 1 February 2019 |
Lens focal length | 3.097 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | 3.10.49-perf-g5b4a03c |
File change date and time | 15:47, 1 February 2019 |
Y and C positioning | Centered |
Exposure Program | Not defined |
Exif version | 2.2 |
Date and time of digitizing | 15:47, 1 February 2019 |
Meaning of each component |
|
Image compression mode | 4 |
APEX shutter speed | 4.644 |
APEX aperture | 2.52 |
APEX brightness | 0.94 |
APEX exposure bias | 0 |
Metering mode | Center weighted average |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
DateTime subseconds | 410925 |
DateTimeOriginal subseconds | 549 |
DateTimeDigitized subseconds | 410925 |
Supported Flashpix version | 1 |
Color space | sRGB |
Exposure index | 283 |
Sensing method | 0 |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 0 mm |
Scene capture type | Standard |
Scene control | Low gain down |
Contrast | Normal |
Saturation | Normal |
Sharpness | Hard |