GRASS VALLEY Python 3G Series User manual

Python 3G User Guide
M4040-9900-102
24 July 2014

ii
Notices
Copyright & Trademark Notice
Copyright © 2006–2014, Grass Valley. All rights reserved.
Belden, Belden Sending All The Right Signals, and the Belden logo are trademarks or
registered trademarks of Belden Inc. or its affiliated companies in the United States and
other jurisdictions. Grass Valley, Python 3G are trademarks or registered trademarks of
Grass Valley. Belden Inc., Grass Valley, and other parties may also have trademark rights in
other terms used herein.
Terms and Conditions
Please read the following terms and conditions carefully. By using Python 3G
documentation, you agree to the following terms and conditions.
Grass Valley, a Belden Brand (“Grass Valley”) hereby grants permission and license to owners
of Python 3G to use their product manuals for their own internal business use. Manuals for
Grass Valley products may not be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying and recording, for any purpose unless
specifically authorized in writing by Grass Valley.
A Grass Valley manual may have been revised to reflect changes made to the product
during its manufacturing life. Thus, different versions of a manual may exist for any given
product. Care should be taken to ensure that one obtains the proper manual version for a
specific product serial number.
Information in this document is subject to change without notice and does not represent a
commitment on the part of Grass Valley.
Warranty information is available in the Support section of the Grass Valley Web site
(www.miranda.com).
Title Python 3G User Guide
Part Number M4040-9900-102
Revision 24 July 2014

iii
Table of Contents
1 About Python 3G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About the Python 3G System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Fiber Cable Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking the Python 3G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Product Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety and Fiber Optic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Optical Fiber Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FCC Part A Manual Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Hardware and Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
PY3-AA00-ST4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
PY3-AA00-ST8 /PY3-RR00-ST8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
PY3-AR00-ST8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PY3-AAR0-ST12 / PY3-RRA0-ST12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
PY3-AAAA-ST16 / PY3-RRRR-ST16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
PY3-AARR-ST16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
PY3-G000-W41/PY3-R000-W41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
PY3-GH00-W8/PY3-RR00-W8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
PY3-GR00-W8/PY3-HR00-W8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
PY3-GHJK-W16/PY3-RRRR-W8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
PY3-GHRR-W8W8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PY3-GHRR-W16/PY3-JKRR-W16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3 Python 3G Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Python 3G Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Python 3G Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Power and Display Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Python 3G Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Area A – SDI/DATA IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Python 3G Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Area A – SDI/DATA OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Python 3G Transceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Area A – SDI/DATA IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Area B – SDI/DATA OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Python 3G Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Python 3G Transmitter Rear Panel without CWDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Python 3G Transmitter Rear Panel with CWDM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Python 3G Receiver Rear Panel without CWDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Python 3G Receiver Rear Panel with CWDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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Table of Contents
Python 3G Transceiver Rear Panel without CWDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Python 3G Transceiver Rear Panel with CWDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Python 3G Units with CWDM and Fiber Capability (Dual Input/Output). . . . . . . . .32
Python 3G Rear Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Area A - Rear Panel Power Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Redundant Power Supply Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Area B – CAN BUS Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Area C – The ST Fiber Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Power Connector Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Fiber ADAP Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4 Python 3G Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fiber Optical Channel Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Using the Python 3G Optical Measurement Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Python 3G Optical Measurement Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Condition 1: No Optical Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Condition 2 – Optical Link good but no SDI data present.. . . . . . . . . . . . . . . . . . . . . . 40
Condition 3 - Active usable optical link with SDI Data . . . . . . . . . . . . . . . . . . . . . . . . . 40
System Firmware Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Technical Information Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
5 Understanding Python 3G Model Numbers. . . . . . . . . . . . . . 43
Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Part Number Card Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Fiber I/O Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Example Python 3G Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1
About Python 3G
This chapter provides an overview of the Python 3G and includes the safety and warranty
information about it.
About the Python 3G System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety and Fiber Optic Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2
About Python 3G
About the Python 3G System
About the Python 3G System
The Python 3G transmitter multiplexes a number of HD/SDI signals into a fiber optic
transport stream. The number of signals can be 4, 8, 12, or 16 – always in multiples of four.
Similarly, the Python 3G receiver de-multiplexes a corresponding number of fiber optic
signals into HD/SDI.
The method of fiber optic signal transmission can use one-for-one pass through conversion
of each HD/SDI signal or CWDM (course wavelength division multiplexing) for up to 16
HD/SDI signals combined into a signal fiber optic cable.
In addition to Python 3G transmitter and receiver models, Transceivers are also available
which allow various combinations of transmit and receive in the same unit. Please see
Available Models on page 8 for the model list.
Python 3G units accept electrical digital signals (via BNC), ranging from 19.4 Mbps up to
3Gbps-uncompressed HD/SDI.
Along with LEDs to indicate the presence of an HD/SDI signal at each BNC input and output,
the Python 3G features an integrated optical power meter for monitoring the received
power for each optical HD/SDI signal. Fiber optical power is measured only at the receiver
end of the signal path.
Figure 1-1 is a conceptual overview of an example Python 3G signal path.
Fig. 1-1: Python 3G Conceptual Overview
The Python 3G also features dual 12-18 VDC power inputs for electrical redundancy. Up to
3Gbps is supported on each optical channel.
The Python 3G handles a wide range of digital video rates. Supported formats include:
• 3 Gb/s HD/SDI: SMPTE 424M
• 1.5 Gb/s HD/SDI: SMPTE 292M
• 143 Mb/s: SMPTE 259M

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Python 3G
User Guide
• 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 3G 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 3G Model Numbers on page 43 for a list of all of the
available I/O cards.
Positions A-3 a nd A- 4 each have a four c hannel d etec tor c ard tha t conver ts th e 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 3G
System. The Python 3G 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)

4
About Python 3G
Unpacking the Python 3G
Unpacking the Python 3G
Please consult your packing slip and purchase order to ensure that you have received all of
the expected components.
Inspect all components for scratches and other mechanical damage, and inspect the
electrical connectors for bent or damaged pins and latches. Report any missing or
damaged components to Fiber Solutions (see Product Returns on page 4).
Leave the protective caps on the optical connectors whenever the fiber is disconnected.
Product Returns
In the unlikely event of damage to your Python 3G during shipping or delivery, take note of
any damage with the delivery or shipping service. If any component does not work
correctly out of the box, please contact Grass Valley Fiber Solutions service (Contact Us on
page 49).
If the problem cannot be remedied through a service telephone call,you will receive an
RMA number (Return of Merchandise Authorization). Please note this RMA number inside
and outside of all shipping boxes and on all documentation provided with the items to be
returned.

5
Python 3G
User Guide
Safety and Fiber Optic Systems
Optical Fiber Safety
Never look directly into the end of the optic fiber while either end of the system is
operating.
This Python 3G contains CDRH Class 1 laser devices. To prevent damaging your eyes, always
avoid looking directly at, or staring into, the laser light located on an optical connector or
on the end of a fiber.
Infrared radiation is produced at the fiber connection port on the rear of the TX units and at
the end of any un-terminated optical fibers that are attached to this port. Avoid any direct
exposure to the light that comes from these sources.
Do not power up the unit if there are no fiber cables connected to the fiber port.
There are no manual adjustments to make inside the Python 3G. Do not attempt any type
of service on this instrument, other than any procedures as instructed in this Guide. Refer all
servicing to the Fiber Solutions division of Grass Valley (see Contact Us on page 49).
Always use cable connector caps when the cables are not connected. This protects the
connector from damage and the unlikely event of exposure to an operating optical link.
Keeping the caps in place when the connectors are not in use will prevent dirt and dust
from entering the connector and degrading the performance of the optical link.
FCC Part A Manual Notice
ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigital
device,pursuanttopart15oftheFCCrules.Theselimitsaredesignedtoprovide
reasonableprotectionagainstharmfulinterferencewhentheequipmentisoperatedina
commercialenvironment.Thisequipmentgenerates,uses,andcanradiateradio
frequency(RF)energy.IfnotinstalledandusedinaccordancewiththisUserGuide,this
equipmentmaycauseharmfulinterferencetoradiocommunications.

6
About Python 3G
FCC Part A Manual Notice

7
Hardware and Block Diagrams
This chapter lists the models available with the Python 3G and lists the block diagrams of
these models.
Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

8
Hardware and Block Diagrams
Available Models
Available Models
The Python 3G is available in a variety of standard models. The following list covers the
models available at the time of publication. Please see Understanding Python 3G Model
Numbers on page 43 for an explanation of how to understand Python 3G Model Numbers.
The Python 3G may contain as many as 16 HD/SDI BNC Connectors on the front panel and
as many as 16 ST Fiber Optic cable connectors on the rear panel. Illustrations of a few of the
the 29 standard models available at time of publication are included in this table.
Part Number Type
HD/SDI
Transmit
HD/SDI
Receive
CWDM
Equipped
Number of
Fibers
PY3-R000-ST4 Receiver X 4 No 4
PY3-RR00-ST8 Receiver X 8 No 8
PY3-RRR0-W83W43 Receiver X 12 Yes 2
PY3-RRRR-ST16 Receiver X 16 No 16
PY3-RRRR-W16 Receiver X 16 Yes 1
PY3-RRRR-X16 Receiver X 16 Yes 2
PY3-A000-ST4 Transmitter 4 X No 4
PY3-AA00-ST8 Transmitter 8 X No 8
PY3-GHJ0-W83W43 Transmitter 12 X Yes 1
PY3-AAAA-ST16 Transmitter 16 X No 16
PY3-GHJK-W16 Transmitter 16 X Yes 1
PY3-GHJK-D16 Transmitter 16 X Yes 2

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Python 3G
User Guide
PY3-GHJR-W16 Transceiver 12 4 Yes 1
PY3-GHGR-W8W8 Transceiver 12 4 Yes 2
PY3-AAR0-ST12 Transceiver 8 4 No 12
PY3-AARR-ST16 Transceiver 8 8 No 16
PY3-AR00-ST8 Transceiver 4 4 No 8
PY3-HRRR-W8W8 Transceiver 4 12 Yes 2
PY3-GHRR-W8W8 Transceiver 8 8 Yes 2
PY3-A0RR-ST12 Transceiver 4 8 No 12
PY3-KRRR-W16 Transceiver 4 12 Yes 1
PY3-GR00-W8 Transceiver 4 4 Yes 1
PY3-HR00-W8 Transceiver 4 4 Yes 1
The following Python 3G Models are Operated as a Matched Pair
PY3-G000-W41 Transmitter 4 X Yes 1
PY3-R000-W41 Receiver X 4 Yes 1
PY3-GH00-W8 Transmitter 8 X Yes 1
PY3-RR00-W8 Receiver X 8 Yes 1
PY3-GHRR-W16 Transceiver 8 8 Yes 1
Part Number Type
HD/SDI
Transmit
HD/SDI
Receive
CWDM
Equipped
Number of
Fibers

10
Hardware and Block Diagrams
Available Models
Table. 2-1: Python 3G Available Models
PY3-JKRR-W16 Transceiver 8 8 Yes 1
Part Number Type
HD/SDI
Transmit
HD/SDI
Receive
CWDM
Equipped
Number of
Fibers

11
Python 3G
User Guide
Block Diagrams
PY3-AA00-ST4
Fig. 2-2: 4 Channels Python 3G on 4 Fibers Block Diagram

12
Hardware and Block Diagrams
PY3-AA00-ST8 /PY3-RR00-ST8
PY3-AA00-ST8 /PY3-RR00-ST8
Fig. 2-3: 8 Channels Python 3G on 8 Fibers Block Diagram

13
Python 3G
User Guide
PY3-AR00-ST8
Fig. 2-4: 4x4 Channels Python 3G on 8 Fibers Block Diagram

14
Hardware and Block Diagrams
PY3-AAR0-ST12 / PY3-RRA0-ST12
PY3-AAR0-ST12 / PY3-RRA0-ST12
Fig. 2-5: 8x4 Channels Python 3G on 12 Fibers Block Diagram

15
Python 3G
User Guide
PY3-AAAA-ST16 / PY3-RRRR-ST16
Fig. 2-6: 16 Channels Python 3G on 16 Fibers Block Diagram

16
Hardware and Block Diagrams
PY3-AARR-ST16
PY3-AARR-ST16
Fig. 2-7: 8x8 Channels Python 3G on 16 Fibers Block Diagram