Products

	A3318

850 nm/Electrical OST Interface

The A3318 850 nm/Electrical OST
Interface operates in conjunction
with the Circadiant family of OSTs. It enables the OST to make stressed eye measurements in accordance with the IEEE 802.3ae standard using multi-mode fiber at a wavelength near 850 nm. Included electrical TX and RX interfaces allow testing of the high-speed electrical inputs and outputs of optical transmitters and receivers. Traditional near-perfect signals may be utilized or the
A3318 may be used to make “Dirty BERT” measurements where
electrically noisy signals simulate real-world degradations.

• Makes optical stressed eye receiver conformance measurements at 850 nm
  
• Tests multi-mode components and systems using real-world optical signals
• Produces real-world electrical signals

The A3318 850 nm/Electrical OST Interface operates exclusively as a slave to the OST:

A single mode fiber jumper from the output of the OST carries an optical signal (possibly degraded) to an input on the A3318. The A3318 re-broadcasts this analog signal to a Device Under Test (DUT), perhaps with additional degradations, either through a multi-mode fiber at 850 nm or electrically through coaxial cable. Similarly, an optical signal over multi-mode fiber, or an electrical signal over coaxial cable, sent to the A3318 by a DUT is digitally re-broadcast to the OST via a single mode fiber.

The A3318 works only with an OST and will not operate in a stand-alone mode.

	High-Speed Optical Interfaces

Single Mode Optical Interface

The OST generates non-degraded signals or signals with certain degradations that are sent to the A3318 via single mode fiber. The A3318 converts electrical or multi-mode optical signals received from a DUT and re-broadcasts them over single mode fiber to the OST.

Multi-Mode Optical Receiver Interface

The A3318 850 nm receiver interface connects to a DUT via multi-mode fiber. Input specifications:

1. Input optical eye must meet IEEE 802.3ae Standard specifications.

Multi-Mode Optical Transmitter Interface

The A3318 850 nm transmitter interface connects to a DUT via multi-mode fiber. Output specifications:

1. 20% to 80%, measurements taken at room temperature.

	High-Speed Electrical Interfaces

From DUT Electrical to Electrical Receiver Interface

To DUT Electrical Transmitter Interface

The A3318 electrically connects to a DUT via a 10 Gb/s digital differential or analog single-ended output. Transmitter output specifications:

1. 20% to 80%, measurements taken at room temperature.

	Other I/O

External Clock Input

The external clock input is the reference clock supplied by either the OST or the user and runs at 1/64th of the system data rate. It is intended to be used with XFP module REFCLK inputs.

1. 20% to 80%, measurements taken at room temperature.

External Clock Input

The external clock input is the reference clock supplied by either the OST or the user and runs at 1/64th of the system data rate. It is intended to be used with XFP module REFCLK inputs.

Control Interface

The A3318 is controlled from the OST via the OST’s GUI or via SCPI commands sent to the OST Ethernet or GPIB interface.

	Physical Specifications

Front Panel OST Connections

• Control Connection: Ethernet LAN
  
• TRIG OUT: SMA
  
• RX Single Mode from OST: Replaceable bulkhead adapters
  
• TX Single Mode to OST: Replaceable bulkhead adapters

Front Panel DUT Connections

• REF Clock IN: SMA
  
• 10G Electrical OUT: 3.5 mm SMA
  
• Digital IN from DUT: 1 Pair SMA
  
• Digital OUT to DUT: 1 Pair SMA
  
• RX Multi-Mode from DUT: 62.5/125 µm in replaceable bulkhead adapters
  
• TX Multi-Mode to DUT: 50/125 µm in replaceable bulkhead adapters

Rear Panel Connections

• VGA - Rear Panel
• USB - Rear Panel

Indicators

• Power (2)
  
• Config
  
• Comm
  
• Ready
  
• Laser Control Active
  
• TX Multi-Mode Active
  
• RX Multi-Mode Active
  
• Digital IN Active
  
• Digital OUT Active
  
• 10G Electrical OUT Active
  
• HDD
  
• Reset
  
• Hot Swap

	Environmental Specifications

Operating Temperature:

Temperature Range: 25 +/- 5° C

Safety

Pending EN61010-1:2001

Laser Safety:

• USA — Class I Product, CFR, 1040-1
  
• IEC 60825-1:1993+A2:2001

Physical Dimensions

• Width 17.3” (441 mm)
• Height 3.5” (88 mm)
• Depth 14.1” (359 mm)