The Fiberlink 3518 series supports 4 channels of independent, bidirectional 3G/HD/SD-SDI or DVB-ASI, with or without embedded audio and data, and transmits it over one single mode fiber. Now, you can send two 3G/HD/SD-SDI signals upstream and two 3G/HD/SD-SDI signals downstream!

All SMPTE compliant signals are equalized and reclocked. Each unit features two reclocked, non-inverting BNC outputs. The 3518 Series is compliant with SMPTE 259M-2006, 292-2006, 424M-2006, 305M-2005, 310M-2004, 344M-2000 and DVB-ASI. The series is immune to pathological patterns over entire link budget and operating temperature range. Units are configured with ST optical connectors.

Fiberlink  3518  Series is ideal for any broadcast or professional video application: broadcast studios, sporting events, confidence monitoring, OB vans, video conferencing and more!

Fiberlink  3518  is also available in a 2 channel version, Fiberlink 3516 Series.

Fiberlink  3518  is also available in a 2 fiber version, Fiberlink 3528 Series.

3518 Transmitter Optical Output

Emitter Type
DFB Laser
Output Power (Nominal)
+2 dBm for High Power, Longer Distance Version (3518-x9z)
At 270 Mbps, 1.485 Gbps & 2.97 Gbps
1510, 1530, 1550, 1570nm (nominal)
3518 Transmitter: Serial Video BNC Input

Data Rate Range
19.4 Mbps to 2.97 Gbps
Automatic up to 100m of Belden  1694A at 3.0 Gbps, 200m at  1.485 Gbps and 350m at 270 Mbps
Number of Inputs
Re-clocked Data Rates
270 Mbps (SMPTE 259M, DVB-ASI-270),  
1.485 Gbps (SMPTE 292),  
2.97 Gbps (SMPTE 424M-2006)
Return Loss
>10dB up to 2.97 Gbps
Supported Standards
SMPTE ST-425-3, 259M, 292, 297-2006,  424M-2006, 305M, 310M, 344M,  DVB-ASI
3519 Receiver BNC Outputs

Alignment Jitter
< 0.2 UI at 270 Mbps;
< 0.2 UI at  1.485 Gbps;
< 0.3 UI at 2.97 Gbps with color bar signal
DC Offset
0V  ± 0.5V
Number of Outputs
< 10% of amplitude
At 270 Mbps, 1.485 Gbps & 2.97 Gbps
Rise/Fall Time
< 135 ps at 2.97 Gbps per SMPTE 424M-2006;
< 270 ps at 1.485 Gbps per SMPTE 292;
0.4 ns to 1.5 ns at 270 Mbps per SMPTE 259M
Signal Level
800mV  ± 10%
Timing Jitter
< 0.2 UI at 270 Mbps;
< 1.0 UI at  1.485 Gbps;
< 2.0 UI at 2.97 Gbps with color bar signal
3519 Receiver Fiber Optic Input

Maximum Input Power
-1 dBm
Minimum Input Sensitivity
-17 dBm at 2.97 Gbps;
-20 dBm at 1.485 Gbps
-21 dBm at 270 Mbps;
1100 – 1620 nm
General Specifications

4K/UHD Support
up to 30 fps using 2 inputs
Box Version Dimensions
6.5 W x 1.15 H x 6 L (inches)
165 W x 29 H x 152 L (mm)
Power, Data Rate lock(3G, HD, SD/DVB-ASI), Alarm (Card Version Only)
Link Timing Difference
0.3nS/Km of Fiber
72,000 Hours
Operating Temperature
-10 º C to +50 º C
9-24 volts, AC or DC,
3518: 5 watts, 17.66 BTU/Hr
3519: 4 watts, 13.64 BTU/Hr
Slots in 6000A Card Cage
12.3 ounces, 382 grams
  • Supports 4K/UHD – This product supports 4K/UHD resolutions. Refer to datasheet for more information.
  • 3G/HD/SD-SDI – This product supports SMPTE complaint 3G, HD and SD-SDI data rates.
  • HDTV Resolutions to 1080p – This product supports HDTV resolutions of 480p, 720p and 1080p.
  • Multiple Video Channels – This product supports multiple video channels. Refer to the datasheet for more information.
  • Single Mode Fiber – This product comes in a version that supports Single Mode Fiber.
  • Box and Card – This product is available in a box or card configuration.
  • ST Connectors – This product can be ordered with ST optical connectors.