Digital Data

The ViaLiteHD Digital Data link provides full duplex transmission of RS422, RS485, RS232 and TTL signals over two single mode optical fibers. Distances of 1 m to 50 km are achievable without the need for repeaters. This link is suitable for use with the digital signaling of unbalanced ones and zeros and any duty cycle ratios.

DC-10Mbps for RS422, RS485 and TTL
DC-460kbps for RS232
1PPS
Configurable data rate and input impedance
50 ohm TTL drive capacity
No special signal coding required
5-year warranty as standard

Datasheets

Product Inquiry

ViaLite Serial digital data Blue OEM Module

Further features and benefits:

Low cost compared with coaxial cable
Minimal carrier to noise degradation
Intelligent control via SNMP (requires ViaLiteHD Monitoring & Control Module)
TTL input impedance 50Ω, 600Ω or 10kΩ
Frequency response independent of path length
Compact OEM module for easy integration
Non-conductive and immunity to electrical interference.

The ViaLiteHD Digital Data link can be used to connect remote base stations in cellular and TETRA networks for software upload and system feedback. It also allows the monitoring and control of third party equipment in satellite ground stations, and distribution of network time server and clock signals. The link can be used for any other data communication using serial RS232, RS485 or TTL signals.

Digital data is used in every application that ViaLiteHD RF over fiber is used:

Satcom for BUC, converter and antenna control
Broadcast for camera control and battery monitoring
Cellular and network timing for digital GPS into base stations
Telemetry for antenna control/switching
Mining and public safety for digital GPS
Government and defense for radar or secure rooms.

The ViaLite Digital Data link is available in several formats:

– Single rack chassis card / Dual rack chassis card (Rx/Rx, Tx/Tx or Tx/Rx)

A fully populated 19” 3U ViaLiteHD rack chassis supports up to 26 links and accepts 13 RF cards, plus a Monitoring & Control Module and dual power supply modules. A 1U chassis accepts three RF cards or two RF cards with a Monitoring & Control Module.

– Blue OEM Link

The ViaLite standalone Blue OEM Link offers a compact, single link solution.

– Yellow OEM Link

The Yellow OEM Link has been designed for system integrators and equipment manufacturers to build the link into their own designs.

See our hardware formats guide for more information.

Electrical Characteristics

	Serial Digital Link
Data Rate 1 - RS422 and RS485	0-115 kbps
Data Rate 2 - RS422 and RS485	0-500 kbps
Data Rate 3 - RS422 and RS485	0-10 Mbps
Data Rate - TTL	0-10 Mbps
Data Rate - RS232	0-460 kbps
Input Impedance - RS422 and RS485	120 Ω
Input Impedance - RS232	>=3kΩ
Input Impedance 1 - TTL	50 Ω
Input Impedance 2 - TTL	600 Ω
Input Impedance 3 - TTL	10k Ω
TTL Drive Capability	50 Ω
Duty Cycle Distortion	5% @ 115kbps
Bit Error Rate	<1 x 10E -8
RS Output Rise/Fall Time	<25ns
Jitter	<10mUI (rms), 100mUI (pk)
Delay	<5 µs @ 1m fiber
Power	0.7W (typ), 1.2W (max)