Grass valley 8935CF DATASHEET

8935CF 4-Channel Electrical to 4-Channel Fiber Optic Conversion Module 59

Key Features

•Four-channel SDI/HD-SDI fiber transmitter

•Also supports DVB ASI, AES, and Grass Valley audio TDM interface

•Supports up to two SFP devices for up to four fiber optic outputs

•Reclocking for stable long distance signals

•Reclock bypass for non-SDI signal types

•Accommodates lasers with separated wavelengths for CWDM optical multiplexing

•Single-mode fiber

•Can be used with the 8935FC receiver and other fiber-ready modules for distances of between 0 and 50 km, depending on the transmitter

•Meets SMPTE 292M/297M/259M signal specifications

Applications

•Transporting multiple high-definition video feeds over long distances

•For constructing SD/HD-SDI optical tielines

•Sending multiple optical signals over long distances to fiber-ready synchronizing modules for re-timing

•To feed the 8939FCA for an extremely compact multiplexed fiber solution

Specifications

Supported Frame Types

GeckoFlex

Power Rating

7.5 Watts (with two SFP devices) – single slot

Modes of Operation

The 8935CF supports following modes of operations:

•Auto reclock 270 Mb/s / 1.5 Gb/s / bypass mode

•Auto reclock 270 Mb/s / 1.5 Gb/s mode

•Fixed reclock 270 Mb/s mode

•Fixed reclock 1.5 Gb/s mode

•Fixed bypass mode

Environmental

Operating temperature range: 0 to +45°C Non-operating temperature range: -10 to +70°C

Humidity: 90% non-condensing

Serial Digital Input

Connector: BNC equalized for up to 300m of Belden 1694A cable for bit rates up to 270 Mb/s and up to 100 m of Belden 1694A for bit rates from 270 Mb/s to 1.5 Gb/s

Input impedance: 75Ω Return loss: 15 dB Reclocking:

•SMPTE 292 M-1998 at 1.485 Gb/s

•SMPTE 259M-1997 and DVB-ASI at 270 Mb/s

Non-reclocking: 1 to 540 Mb/s, AES 3id-2001 and MADI

The 8935CF is a four-channel electrical to optical broadcast quality fiber optic conversion module with reflected electrical outputs. It can accommodate SD/HD-SDI video inputs from 270 Mb/s to 1.5 Gb/s as well as DVB ASI, unbalanced AES, and Grass Valley audio TDM interfaces. The optical circuitry is housed in dedicated strapmount SFP submodule devices mounted on the module circuit board. To construct a four-channel solution, select two of the SFP transmitter devices for two four-channel operation. The SFPs selected set the power and the wavelength for the unit, which allows for CWDM operation when combined with the 8939FCA/8939FCB optical

multiplexer. This replaceable optical technology allows for easy upgrade, reconfiguration, and servicing.

Parameters are controllable via the NetConfig Web browser interface for configuration and parameter adjustment. The popular NetCentral application provides health monitoring for modular products as well as many other Grass Valley products.

Coax

Inputs

Equalizer #1

Ch1

Equalizer #2

Ch2

Equalizer #3

Ch3

Equalizer #4

Ch4

Bypass

Reclock

Bypass

Reclock

Bypass

Reclock

Bypass

Reclock

Fiber Digital Outputs

Connector: Four LC optical connectors

Optical outputs: One optical per electrical input

Electrical outputs: One 75Ω BNC reflected electrical output per electrical input

Electrical Length

Reclocked at 270 Mb: 10 ns

Reclocked at 1.5 Gb: 8 ns

Bypass: 7 ns

Fiber Optic Submodule Devices

Channels	2 Frequencies per CWDM SFP Device
Channel 1 and 2	1470 nm & 1490 nm Transmitters
Channel 3 and 4	1510 nm & 1530 nm Transmitters
Channel 5 and 6	1550 nm & 1570 nm Transmitters
Channel 7 and 8	1590 nm & 1610 nm Transmitters
Channel 9 and 10	1310 nm & 1330 nm Transimitters
Channel 11 and 12	1350 nm & 1370 nm Transmitters
Channel 13 and 14	1390 nm & 1410 nm Transmitters
Channel 15 and 16	1430 nm & 1450 nm Transmitters

These SFP transmitters are Class 1 laser devices

	8935CF-R
CH 1	CH 1
Input	Output
CH 2	CH 2
Input	Output
CH 3	CH 3
Input	Output
CH 4	CH 4
Input	Output
Fiber Out	Fiber I/O
Connector	Connector

	Cable Driver #1	Ch1
	Cable Driver #2	Ch2
	Cable Driver #3	Ch3
	Cable Driver #4	Ch4
	TX #1	FO1
	TX #2	FO2
	Dual TX	FO3
	TX #3
	TX #4	FO4
	Dual TX

Ordering Information

This module can be mounted in a single slot in a GeckoFlex frame but not in other 8900 series frames, including Gecko-A or Gecko-V frames.

8935CF

Electrical to fiber optic 1:1 converter baseboard, (front and 8935CF-R rear module set)

Important Order Note: Two SFP devices are required for the full operation of the 8935CF module.

SFP Device – Dual Transmitter

• SFP-13103G-M1DTX-K

SFP Device – Dual Transmitter for CWDM

•SFP-CWDM3G-1-K – 1470 nm and 1490 nm

•SFP-CWDM3G-2-K – 1510 nm and 1530 nm

•SFP-CWDM3G-3-K – 1550 nm and 1570 nm

•SFP-CWDM3G-4-K – 1590 nm and 1610 nm

•SFP-CWDM3G-5-K – 1310 nm and 1330 nm

•SFP-CWDM3G-6-K – 1350 nm and 1370 nm

•SFP-CWDM3G-7-K – 1390 nm and 1410 nm

•SFP-CWDM3G-8-K – 1430 nm and 1450 nm

For detailed specifications, installation, and setup instructions see: www.grassvalley.com/docs/modular