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Chronos

2x 12G, Sync and Ethernet to Optical Interface

Description
Specification
Downloads
Ordering info

Description

The Chronos Series is an advanced remote connection system designed to transport 12G-SDI, genlock, and multi-rate Ethernet signals over a single fibre link. This versatile transmitter and receiver pair is specifically tailored to meet the needs of modern broadcasting, providing seamless connections between remote 4K cameras, control signals, and synchronisation signals at base stations.
In addition to supporting SDI, Genlock Sync and Ethernet signals, Chronos features an LC fibre optical input, allowing an additional singlemode optical signal to be transmitted over the same fibre. This capability enhances flexibility, making Chronos an ideal solution for complex setups, particularly in demanding Outside Broadcast (OB) environments due to its compact and weatherproof housing.
Connectivity is streamlined with four BNC connectors for 2x SDI video, 2x genlock in/out and one or two RJ45 Ethernet ports, alongside a dual LC optical port for fibre communication. The optical expansion port allows cascading with additional Chronos units or other optical sources operating on different wavelengths. High Band units, operating in the 1470–1610 nm range, can interconnect with Low Band units in the 1270–1410 nm range, doubling the signal capacity on a single fibre link.
The Chronos Series consists of four models, each which exists in two variants. These are:
  • High Band Variant (1470–1610 nm):
    • Chronos-T: Dual SDI inputs, 2x Sync outputs and single Ethernet to LC fibre output.
    • Chronos-R: LC fibre input to dual SDI outputs, 1x sync in with sync loop out. and single Ethernet.
    • Chronos-TD: Dual SDI inputs, 2x Sync outputs and dual Ethernet to LC fibre output.
    • Chronos-RD: LC fibre input to dual SDI outputs, 1x sync in with sync loop out. and dual Ethernet.
  • Low Band Variants (1270–1410 nm):
    • Chronos-T-L: Dual SDI inputs, 2x Sync outputs and single Ethernet to LC fibre output.
    • Chronos-R-L: LC fibre input to dual SDI outputs, 1x sync in with sync loop out. and single Ethernet.
    • Chronos-TD-L: Dual SDI inputs, 2x Sync outputs and dual Ethernet to LC fibre output.
    • Chronos-RD-L: LC fibre input to dual SDI outputs, 1x sync in with sync loop out. and dual Ethernet.

Optical Expansion and Scalability:

An LC “EXP” port enables the Chronos to operate as a scalable solution. High Band units can interconnect with Low Band units via their optical expansion ports, effectively doubling the transport capacity. This configuration allows up to four 12G-SDI video, four sync outs and and four Gigabit Ethernet streams to pass over a single fibre link – allowing control of four cameras. Additional optical signals can be accommodated as long as they operate on unused wavelengths.

Connectivity and Design:

Each Chronos unit features four BNC connectors for 2x SDI video, genlock and one or two RJ45 Ethernet ports. The standard optical port is a dual LC connector, ensuring compatibility with industry-standard fibre systems. Compact and robust, the Chronos is engineered for reliable performance in demanding environments.

Chronos is the ultimate solution for high-capacity, long-distance signal transport in modern broadcast and live production setups.

Specification

SDI Electrical Input
Connector 75 Ohm BNC per IEC 60169-8 Amendment 2
Return Loss > 15 dB @ 1.485 GHz

<-10dB to 3GHz

<-7dB to 6GHz

<-4dB to 12GHz

Standards SMPTE ST 2082, SMPTE ST 2081, SMPTE ST 424, SMPTE ST 292, SMPTE ST 259, DVB-ASI
Polarity Non – Inverting
Equalisation Automatic rate detection and cable equalisation

70m @ 11.88Gbps

90m @ 5.94Gbps

170m @ 2.97Gbps

240m @ 1.485Gbps

400m @ 270Mbps

SDI Electrical Output
Connector 75 Ohm BNC per IEC 60169-8 Amendment 2
Return loss <-15dB to 1.485GHz

<-10dB to 3GHz

<-7dB to 6GHz

<-4dB to 12GHz

Standards SMPTE ST 2082, SMPTE ST 2081, SMPTE ST 424, SMPTE ST 292, SMPTE ST 259, DVB-ASI
Polarity Non-Inverting
Signal level 800 mV +/- 10%
DC Offset 0 +/- 0.5 V
Sync Electrical Input/Output
Standards Composite 1V pk-pk PAL, NTSC, SECAM
Connector 75 Ohm BNC
Diff. Phase < 1º
Diff. Gain < 1% (at sub-carrier 3.58/4.43 MHz)
Ethernet Input/Output
Connector RJ45
Number Chronos-T & Chronos-R: 1

Chronos-TD & Chronos-RD: 2

Format Copper Port (electrical): 10/100/1000BASE-T, half/full duplex, auto-negotiation
Fibre Port (optical): 100/1000BASE-FX
Standard IEEE 802.3 10BASE-T

IEEE 802.3u 100BASE-TX

IEEE 802.3ab 1000BASE-T

Optical Input
Connector LC/PC
Wavelength High Band Variant: 1470–1610 nm

Low Band Variants: 1270–1410 nm

Standards SMPTE ST 297
Sensitivity @12G -13dBm (max)
Sensitivity @<=6G -14dBm (max)
Receiver Overload -2dBm (min)
Optical Output
Connector LC/PC
Standards SMPTE ST 297
Power 1 to -5dBm
Power
Connector XLR4
Voltage 5-17VDC
Power Chronos-T & Chronos-R: 7.5W typ

Chronos-TD & Chronos-RD: 9W typ

General
Dimensions (HxWxD) 112 x 46 x 165mm excluding connectors

112 x 46 x 178mm including connectors

Weight 500g
Operating Temp 0 to +70°C
Warranty 5 Years

Downloads

Title
Description
Open / Download
Chronos Datasheet
Datasheet — Datasheet PDF

Ordering info

High Band optical wavelengths in the range 1470 to 1610 nm
Chronos-T (Transmitter) Dual 12G/6G/3G/HD/SD-SDI Inputs, 2x Sync output, Single Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-R (Receiver) Dual 12G/6G/3G/HD/SD-SDI Inputs, 1x Sync in plus loop-out, Single Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-TD (Transmitter) Dual 12G/6G/3G/HD/SD-SDI Inputs, 2x Sync output,  Dual Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-RD (Receiver)

 

Dual 12G/6G/3G/HD/SD-SDI Inputs, 1x Sync in plus loop-out,  Dual Ethernet to LC fibre with expansion port. Power Supply (PS12) included.

Low Band optical wavelengths in the range 1270 to 1410 nm. 

Chronos-T-L (Transmitter)  Dual 12G/6G/3G/HD/SD-SDI Inputs, 2x Sync output, Single Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-R-L (Receiver) Dual 12G/6G/3G/HD/SD-SDI Inputs, 1x Sync in plus loop-out, Single Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-TD-L Transmitter Dual 12G/6G/3G/HD/SD-SDI Inputs, 2x Sync output,  Dual Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
Chronos-RD-L Receiver Dual 12G/6G/3G/HD/SD-SDI Inputs, 1x Sync in plus loop-out,  Dual Ethernet to LC fibre with expansion port. Power Supply (PS12) included.
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