Specifications

4 Evaluation Board Overview
The evaluation board has been designed to allow for the complete characterization and testing of all
JDSU SFP+ optical transceivers operating up to 11.7 Gbps. This product is backward compatible with
all SFP and SFP+ modules. A high performance microwave dielectric substrate, coplanar strip lines,
SMA connectors rated to 18GHz, and high performance SFP+ card edge connectors are used in order
to minimize the effect of the PCB and connectors on the measurement and characterization of the
SFP+ module. Each board utilizes a JDSU cage with excellent EMI performance characteristics to
allow the units to be directly installed. The line lengths have been designed to minimize channel
timing skew. A DC power connector and jumpers are provided with each board. The evaluation
board is pre-configured with zero ohm resistors installed across jumpers and is set-up for normal
operating conditions and can be reconfigured at the users’ discretion by removing the zero ohm
resistors and using the shorting jumpers supplied. An optional I
2
C interface is provided that is not
required for testing.
4.1 Evaluation Board Set-up and Operation
The evaluation board is pre-configured for use with any SFP+ transceiver. The shorting jumpers are
pre-installed. Many of the jumpers have 0 Ω resistors installed in parallel. The complimentary inputs
of each data channel are common SMA jacks. An I
2
C connector jack is installed for optional 2-wire
serial communications with the SFP+ module.
4.1.1 Block Diagram of Typical Test System
Figure 1 below shows a typical block diagram of a test system showing an optical loopback for verifying
functionality by testing the Bit Error Rate of the SFP+ Module. Other test set-ups are possible.
3
Application Note: SFP+ Evaluation Board
Figure 1: Block Diagram of a typical test set-up.