EVAL-FB01GKUJ

1.25 Gbps Ethernet OptoLock®

Evaluation Kit User Guide

EVAL-FB01GKUS Revision B

OVERVIEW

The EVAL-FB01GKUJ evaluation kit enables

evaluation of the Firecomms Gbit OptoLock®

transceiver for Plastic Optical Fiber (POF). The kit

includes a single OptoLock® transceiver pre-

mounted onto a simple PCB that allows easy

application of DC power via standard 2 mm

diameter DC jacks. Data input (TD) and data output

(RD) are via standard screw terminal SMA

connectors. A single loop-back POF cable is also

included.

For particular POF assemblies please contact

Firecomms Applications support directly.

EVALUATION KIT CONTENTS

The Evaluation Kit contains the following:

1. Evaluation PCB

2. FB01GKUJ mounted onto the evaluation PCB

3. POF cable (1 m, 0.5 NA, 2.2 mm jacket simplex POF)

4. FB01GKUJ Datasheet

INITIAL SETUP

1. Connect GND of a DC power supply to the ground points of the PCB (black terminals).

2. Connect 3.3 V to each of the Tx and Rx VCC jacks (red terminals).

3. Ensure Tx ENABLE is set to the ENABLE position.

4. Connect a multi-meter/oscilloscope probe to the received signal strength indication (RSSI) test point

to measure the voltage signal across the populated 1k resistor.

5. Connect a suitable pattern generator differential data signals via SMA cables to the TD +/- data pins.

EVAL-FB01GKUJ Revision B

6. Connect the RD +/- data pins to a suitable high-speed oscilloscope using 50Ω termination and high-

speed coax, SMA terminated cables.

7. For a loop-back cable test, insert the POF cable into the Tx and then loop it back to the Rx side of

the OptoLock® transceiver. Push in the OptoLock® clamp to lock it securely into place.

FIGURE 1

Setup of the FB01GKUJ Evaluation PCB

LASER SAFETY

The FB01GKUJ is an invisible light emitting device operating at a wavelength of 850 nm with a diverging

beam diameter. Invisible radiation is emitted from the front of the device with a maximum optical power of

1 mW. This device is classified as class 1 per EN 60825-1:2014.

CAUTION: Invisible Laser Radiation – Avoid long term viewing of laser

Tx DC Power

RSSI Test Point

OptoLock® Connector

Ground Test Point

Data Input

Data Output

Rx DC Power

Tx Enable/Disable