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Overview - CANARE 3G Transmission Design n SMPTE Requirements Format HD-SDI SMPTE ST 292 3G-SDI SMPTE ST 424 12G-SDI SMPTE ST 2082-1 Bit Rate 1.485 Gb/s 2.97 Gb/s 11.88 Gb/s Impedance

Aug 24, 2020

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  • Connectors

    26 Connectors

    Rack/Between the Racks Rack/Between the RacksBetween the Rooms

    Margin

    0

    -20

    A tt

    en ua

    tio n

    (d B

    )

    DVJB-W

    105m

    L-7CHD

    2m

    6m

    6m

    2m

    DVJB-W

    L-2.5CHD

    L-4.5CHD

    HD Equipment

    L-4.5CHD

    L-2.5CHD

    BCJ-JR

    HD Equipment

    BCJ-JR

    BCJ-JR

    HD-SDI

    3G-SDI 105m

    125m

    1

    1

    2

    2

    3

    3

    4

    4

    5

    5

    6

    6

    8

    8

    9

    9

    7

    7

    Overview

    3G Transmission Design n SMPTE Requirements Format HD-SDISMPTE ST 292

    3G-SDI SMPTE ST 424

    12G-SDI SMPTE ST 2082-1

    Bit Rate 1.485 Gb/s 2.97 Gb/s 11.88 Gb/s Impedance (Zo) 75Ω

    Cable Loss 20 dB @ 750 MHz(@ 742.5 MHz) 30 dB @ 1.5 GHz

    (@ 1.485 GHz) 40 dB @ 6 GHz (@ 5.94 GHz)

    Return Loss

    5 M–1.5 GHz 15 dB 15 dB 15 dB 1.5–3 GHz - 10 dB 10 dB 3–6 GHz - - 7 dB 6–12 GHz - - 4 dB

    n 3G-SDI Popularity 3G-SDI (3Gb/s Signal/Data Serial Interface) is a transmission format (1080p) that provides twice the data transmission capacity (bandwidth) of today’s widely used HD-SDI (1080i), and its use has seen rapid expansion in recent years. The data format was standardized as SMPTE 424M in 2006, and was revised as the SMPTE ST 424 Standard in 2012, including a change in typical cable loss recommendations (from 20dB to 30dB). Dual-link 3G-SDI and Quad-link 3G-SDI provide reasonable solutions for meeting the production requirements of HDR HDTV, 2K/4K D-Cinema and UHDTV-1.

    n Signal Attenuation in 3G Transmission Lines In order to keep overall transmission line attenuation below the 30dB loss budget, it is necessary to calculate attenuation amounts individually for each section in the system. In the system shown below, the losses occurring within each transmission line have been calculated and entered into a level diagram. From this it is possible to see the differences in transmission distances possible with HD-SDI and 3G-SDI when using a coaxial cable (L-7CHD). If this shows that attenuation will surpass the specified loss budget, then it will be necessary to change to cables with less attenuation,

    or to revise the circuit and/or equipment layout to compensate. It is also recommended that these calculations include a 2–3dB design margin.

    n 12G-SDI In 2015, SMPTE released ST 2082-1 12G-SDI, a standard for UHD-SDI (4K 2160p), as the next-generation of the single-link SDI format. 12G-SDI makes possible transmission of as much as eight times the data volume of HD-SDI (2K 1080i), and as much as four times the data volume of 3G-SDI (2K 1080p) over a single coaxial cable. At the same time, high performance is also required of both cables and connectors (refer to the table above), and Canare has already commenced efforts to meet these requirements.

    n System Attenuation

    Format Connector/Cable ➀

    L-2.5CHD ➁

    DVJB-W ➂

    L-4.5CHD ➃

    BCJ-JR ➄

    L-7CHD ➅

    BCJ-JR ➆

    L-4.5CHD ➇

    BCJ-JR ➈

    L-2.5CHD Sub Total Margin Total

    Amount

    HD-SDI

    m or pcs 2 1 6 1 125 1 6 1 2

    17.6 dB 2.4 dB 20.0 dB Loss

    (dB/m) 0.3 0.9 0.2 0.2 0.1 0.2 0.2 0.2 0.3

    Loss (total) (dB) 0.6 0.9 1.2 0.2 12.5 0.2 1.2 0.2 0.6

    3G-SDI

    m or pcs 2 1 6 1 105 1 6 1 2

    27.7 dB 2.3 dB 30.0 dB Loss

    (dB/m) 0.4 0.9 0.3 0.2 0.2 0.2 0.3 0.2 0.4

    Loss (total) (dB) 0.8 0.9 1.8 0.2 21.0 0.2 1.8 0.2 0.8

  • BCA-TL BCA-RL BCA-TS BCA-RS

    P an

    el H

    o le

    D im

    .

    t1.6 Screw: M2.6 t1.6 Screw: M2.6

    P C

    B H

    o le

    D im

    .

    t2.0 (TOP VIEW)

    t2.0 (TOP VIEW)

    t2.0 (TOP VIEW)

    t2.0 (TOP VIEW)

    Note: The darker shaded area will come into contact with the connector body.

    3. 04

    5. 9

    10.16

    7

    3. 4m

    ax

    2.7×3.6

    P =1.27

    6-φ 0.6

    φ2 .1

    1. 27

    2-φ 1.3

    123

    8 5

    4 1:GND 2:SDI+ 3:SDI- 4:Vcc 5:SD/HD 6:- 7:- 8:ENABLE

    1234

    1:GND 2:SDO- 3:SDO+ 4:Vcc3.

    04 5.

    9

    10.16

    7

    3. 4m

    ax

    P =1.27

    4-φ 0.6

    φ2 .1

    2-φ 1.3

    2.7×3.6 P=1.27 9.64

    1.27 1.15

    2-φ 1.4

    6-φ 0.6

    123

    85

    4

    1:GND 2:SDI+ 3:SDI- 4:Vcc 5:SD/HD 6:- 7:- 8:ENABLE

    1234

    1:GND 2:SDO- 3:SDO+ 4:Vcc

    1.4

    P=1.27 9.64

    4-φ0.6 2- φ1 .4

    27 Connectors

    Fiber-O ptic System

    s Connectors

    Cables Panels &

    Patchbays M

    utichannel System s

    Cable A ssem

    blies

    Simplify Your Circuit Design

    75Ω Active BNC Receptacles

    Model Description Built-in IC

    BCA-TL TX, Right Angle Cable Driver

    BCA-RL RX, Right Angle Cable Equalizer

    BCA-TS TX, Straight Cable Driver

    BCA-RS RX, Straight Cable Equalizer

    • Standard package (5pcs)

    l BNC connector integrated with a cable equalizer or a cable driver, and yet keep the connector size to a minimum.

    l Supports 3G-SDI, HD-SDI, SD-SDI and DVB-ASI l Offers an excellent return loss performance without designing 75 ohm I/O block l Simplifies PCB design process dramatically and will reduce entire development cost l PCB space saving and help to downsize devices l Easy to distinguish TX from RX by color-coded insulation

    Small BNC connector incorporates either a cable equalizer or a cable driver. Active BNC makes innovation in your 3G-SDI PC board layout.

    BCA-TL

    (Right Angle)

    BCA-RS

    (Straight)

    Space-saving

    Built-in

    I/O Block

    Specifi cations

    Model TXBCA-TL, BCA-TS RX

    BCA-RL, BCA-RS Supply Voltage DC 3.3V

    Current Consumption 50mA 70mA

    Operating Temperature -25°C to +85°C

    Output Signal Amplitude 800mVpp —

    Equalizing Cable Length — 3G-SDI 120m w/L-5CFB

    Compliant SMPTE 424M, 292M, 259M,

    BTA S-004C, EN50083-9, RoHS

    Weight Approx. 9.0g US Patent No.: 8251721 B2 JP Patent No.: 4837715 0

    0

    1.5 3.0

    10

    20

    30

    40

    50

    (dB)

    (GHz)

    SMPTE 424M

    Return Loss

    Active BNC

    Active BNC

    1 m L-5CFB

    3G-SDI

    L-5CFB

    SG

    Eye Pattern ( 3Gbps )

    Impedance of PCB

    I / O

    75Ω

    Digital Signal Processing Part

    50Ω

    Digital Signal Processing Part

    50Ω

    BNC Connector Active BNC Impedance of PCB

    Active BNC

  • Connectors

    28 Connectors

    DCJ-LR DCJ-LR/1 DCJ-FEM DCJ-JR

    BCJ-DCJ

    t2.0

    DCJ-LR DCJ-LR/1 DCJ-FEM

    t2.0 t1.6

    SMPTE ST 424

    Rerurn Loss for DCP-C25HD

    Rerurn Loss for DCJ-LR

    75Ω DIN1.0/2.3 Connectors Mini coax connectors IEC61169-29 and DIN 47 297 compatible.

    n DCP-C Series (Crimp Plugs) VSWR [email protected] 3GHz

    n PCB Mount Receptacles VSWR 1.2 @ 3GHz

    n Adapters VSWR 1.1 @ 3GHz

    n Nut Driver Bit

    Model Suitable Cable Center

    Pin Sleeve Boot Die SetCanare Others DCP-C25HD L-2.5CHD, L-2.5CHLT 1855A, VDM230 BN1148 BN7136 — TCD-D253F DCP-C3F L-3CFB — BN1148 BN7003A — TCD-D253F DCP-C4F L-4CHD, L-4CFB 1505A, VPM2000 BN1158 BN7015A — TCD-D534F DCP-C53 L-4.5CHD 1694A, VSD2001 BN1157 BN7138 — TCD-D534F

    •Standard package (20pcs/100pcs)

    Model Description Nut Driver Bit DCJ-LR Right Angle

    NDT-DINDCJ-LR/1 Right Angle, Long type DCJ-FEM Edge Mount

    •Standard package (20 pcs)

    Model Description Panel Mount Nut Driver Bit DCJ-JR Jack to Jack Yes NDT-DIN BCJ-DCJ BNC Jack to DIN1.0/2.3 Jack Yes N/A BCP-DCJ BNC Plug to DIN Jack No N/A

    •Standard package (20 pcs)

    Model Description NDT-DIN 6.35mm (1/4") hex shank

    l Our unique ball-locking mechanism offers smooth and reliable mating. l Canare crimp design ensures quick and reliable installation. l Elongated body design enables stable finger grip. l Return loss: 20 dB or greater up to 3GHz l Extraction tool : BET-DIN (see page 38) US Patent No.: 8764473 B2

    l Compact design ideal for high density mounting and downsizing devices.

    l Combination of DCJ-LR/1 and DCJ- FEM will be effective for staggered arrangement.

    l Return loss: 20 dB or greater up to 3 GHz.

    Note: Nut driver bit NDT-DIN is required.

    l Return loss: 26 dB or greater up to 3 GHz. Note: Nut driver bit NDT-DIN is required for DCJ-JR

    Be sure to use Canare crimping tool for installing connectors on cables

    DCP-C25HD

    DCP-C25HD

    DCJ-LR

    DCJ-LR/1

    DCJ-FEM

    DCJ-JR

    BCJ-DCJ

    BCP-DCJ

    NDT-DIN

    φ 4. 1

    20.847

    0.8

    C A

    N A

    R E φ

    4. 1

    27.95

    75Ω DIN Connectors

  • 29 Connectors

    Fiber-O ptic System

    s Connectors

    Cables Panels &

    Patchbays M

    utichannel System s

    Cable A ssem

    blies

    n Crimp Plugs

    n Flush-mount Receptacle

    Model Suitable Cable Die Set Description

    MDM-V4C25HW V4-2.5CHW TCD-D253F Male

    MDF-V4C25HW V4-2.5CHW TCD-D253F Female

    Model Description