Belden Grass Valley Python Plus, Руководство пользователя

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7
Python Plus
User Guide
• 1.5 Gb/s HD/SDI: SMPTE 292M
• 143 Mb/s: SMPTE 259M
• 270 Mb/s DVB/ASI (re-clocked)
• 19.4 Mb/s ATSC: SMPTE 310M
• Non-standard digital signals to 3 Gb/s
The unit is interoperable with industry standard optical HD/SDI signals to/from other
equipment, such as Rattler™, Diamondback™, SHED™, HDX™, and Viper™ series frames and
modules, as well as other manufacturers' routers, DAs, etc.
The Python Plus has four Input/Output card positions that can either convert incoming
SDI/Data BNC signals into Fiber Optic signals or can detect received Fiber Optic signals and
convert them to SDI/Data. Each position handles four channels
In the above example the two card positions A-1 and A-2 are transmitter cards. Slot A-1
handles 1310 nm low range signals and slot A-2 handles 1310 nm high range signals.
Please see
Understanding Python Plus Model Numbers on page 33 for a list of all of the
available I/O cards.
Positions A-3 and A-4 each have a four channel detector card that converts the incoming
de-multiplexed fiber optic feed into individual SDI/Data signals.
The eight input signals are multiplexed (
B
) and sent to the CWDM Band Coupling I/O card
(
D
). This I/O card manages on a single ST Fiber Connector the eight outgoing and eight
incoming Fiber Optic signals. 16 signals are coupled on to a single Fiber I/O. The band
coupler combines 1310 nm and 1550 nm ranges into a single Fiber Optic signal.
The incoming eight Fiber signals are decoupled, de-multiplexed (
C
) and sent to the
Detector cards for conversion to SDI/Data.
Fiber Cable Overview
Fiber Optics and Fiber Optic Cable are the core technologies at the heart of the Python Plus
System. The Python Plus features the ability to multiplex and de-multiplex a variety of
video, audio, and data signals so that they can be carried over a thin strand of Fiber Optic
cable for long distances. The specific theory and operation of Fiber Optics is beyond the
scope of this document.
Fig. 1-2: Single Mode Fiber Optic Cable Cross-Section (Illustrative Only)