Two-Channel Optical Fiber nTAP

Copy traffic from two full-duplex optical links for two optical monitoring devices

  • Copies traffic from two full-duplex optical links for two optical monitoring devices
  • Connects to two full-duplex links under test and two analyzers equipped with a dual-receive capture card
  • Available in both gigabit and 10 gigabit configurations

Install Observer nTAPs on 1, 10, or 40 Gb single or multi-mode optical links. Or select our newest offering, the Observer High-Density Optical nTAP (HDOT) to mix and match these network speeds or 100 Gb in any combination across 24 modules in a 1U rack.

Use optical nTAPs to send identical copies of critical traffic to network analyzers, remote monitoring appliances, forensics tools, and similar devices capable of supporting dual, non-aggregated data streams. For further flexibility, Observer Copper-to-Optical and Optical-to-Copper Conversion nTAPs are available.

Which nTAP do I need? Tap vs Span

Use the Two-Channel Optical nTAP to connect up to two full-duplex optical links. Then attach optical monitoring devices to the nTAP. To successfully analyze the full-duplex link, the monitoring devices must be equipped with a dual-receive capture card.

Technical Specs


Height (box)1.1 in / 2.79 cm
Width (box)4.55 in / 11.56 cm
Width (faceplate)5.85 in. / 14.6 cm
Depth (faceplate back)7.66 in / 19.46 cm
Height (faceplate)1.10 in / 2.79 cm


Multimode (62.5 μm)Multimode (50 μm)Single-mode (9 μm)

Maximum Insertion Losses (dB)

Split RatioMultimode 62.5 μmMultimode 50 μmSingle-mode 9 μm
 (1300 nm)(850 nm)(1300 nm)(850 nm)(1310/1550 nm)
50/503.9/3.9 dB4.7/4.7 dB4.5/4.5 dB5.5/5.5 dB3.6/3.6 dB

Supported Media

Fiber type MultimodeSingle-mode
Fiber Diameter(s)50 μm or 62.5 μm9 μm
Wavelength Ranges (dual window)850 nm or 1300 nm1310 nm or 1550 nm

Environmental Requirements

SpecificationOperational Range
Temperature Range (operating)-40° to 185° (F) / -40° to 85° (C)
Temperature Range (storage)-52° to 185° (F) / -47° to 85° (C)


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