Graviton PA Series O-E Converter User Manual

: June 3, 2024
: Graviton

Table of Contents

Graviton PA Series O-E Converter
Introduction
Contents of this package
Front and rear panel view
Set up
Connecting External Power Supply
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Graviton PA Series O-E Converter

$Graviton-PA-Series-O-E-Converter-fig- $2$$

Introduction

Thank you for purchasing PA Series O/E Converter. PA Series is Optical to Electric signal converter and has following feature.

SPA-2 ：1000mV/mW（@ 658nm Wave Length）
Wide Frequency Range
- SPA-2: DC～1000MHz
Standard FC optical connector
Optional SC, F05, ST, and SMA connector are also available.
- Standard BNC plug Able to connect directly to an oscilloscope, a spectrum analyzer etc.
- Able to get DC power from instruments through included Power Cable Assembly. It is not guaranteed that power cable corresponds to all instruments.
- Able to use for instrumentation of lightwave products, optical links or other various applications.

Please read this user’s manual carefully and use it appropriately according to this manual, will make this product useful for development of light wave equipments, lightwave communication converter or other various applications.

Do not re-produce or re-publishing a part or all this manual without written permission from Graviton Inc.
This manual is subject to change without notice.
Please follow exporting regulations/rules in individual countries when exporting this product to other countries.

http://www.graviton.co.jp/english/index.html

Contents of this package

The contents of this package are listed below.
Please contact immediately the shop you purchased this product, if there are any missing items found $Graviton-PA-Series-O-E-Converter-fig- $3$$

O/E converter
Power Cable Assembly
Auxiliary Power Connector
User’s Manual(this manual)

Please keep original packaging, in case of re-shipping.

Front and rear panel view

Power switch
This switch is for controlling power. Please on/off this switch after connecting power cable assembly to power connector(②) also keep this switch off when not in use.
Power input connector
The power can be supplied from probe power connector that equipped with an instrument through the Power Cable Assembly. Or, alternately, external regulated power supply (not included) can be used through the Auxiliary Power Connector. Power supply voltage for PA series is+15[V]. Applying over and/or wrong polarity may cause permanent damage. Please refer the specification in page 7 for current consumption and page 5 for the detail of the power connection.
Optical signal input connector
Light signal supplied through this FC connector is up to -4[dBm] for SPA-2. Please do not apply 10dBm or higher light signal. It may cause permanent damage.
Electrical signal output connector
50[Ω] input impedance with wide frequency range instruments is suitable to observe light signal. Recommended to use wider frequency range instruments to withdraw full spec.（DC～1000MHz SPA-2）

Set up

$Graviton-PA-Series-O-E-Converter-fig- $5$$

First of all, connect the O/E converter to input connector of an instrument. Conversion connector may be required, if the instrument has no BNC jack.
Confirm power switch on the O/E converter is off then connect Power Cable Assembly supplied. Other side of the Power Cable can be connected to the instrument, if probe power connector is equipped. Please refer page 6 for connecting external power supply, if the instrument has no probe power connector.
Turn on the power switch.
Connect fiber connector to the O/E converter and adjust voltage and sweep time of the instrument observe the light signal. Also make sure 50[Ω] impedance is selected on the instrument.

Specifications

Item	Test Condition	SPA-2
OE Device		Si

PIN PD

Peak Sensitivity Wavelength| | 800nm
Wavelength Range| More than 1/5

of peak sens.

| 380nm ～

1000nm

Conversion Gain| | 1000mV/mW

@658nm

Acceptable Core Diameter| | 100um ～

1.0mm

Acceptable Fiber NA| | Less than

0.5

Frequency Bandwidth| -3dB electrical| DC～1000MHz
Maximum Optical Power for

Proper Signal Output

| 400mV Out| -4dBm

@658nm

Wideband Noise Voltage| Up to 12.4GHz| 2.0mVrms or less
Noise Equivalent Power| 650nm| -27.3dBm or less

Output Offset Voltage

|

No Input Signal

|

0.5mV or less

Weight[g]

| | 103x44x21

110

Operational Temperature + 5[℃]～+35[℃]
Storage temperature -20[℃]～+50[℃]

This specifications are subject to change without notice.

Connecting External Power Supply

An external power supply is necessary, if an instrument going to use has no probe power output. The requirements for the power supply are regulated±15[V] ±5[%]and capable of supplying more than 150[mA] current with low ripple and noise. And connect as following figure.
Wrong power supply connection may cause permanent damage on the O/E converter. Please make sure the connection as RED Cable for Positive terminal, Black Cable for Ground Terminal and Blue Cable for Negative Terminal $Graviton-PA- Series-O-E-Converter-fig- $6$$
Panel cutout size is as following to mount the Auxiliary Power Connecter on a panel, if necessary. Maximum allowable thickness of the panel is 5mm.

Contact to : Graviton Inc.
1-8-1 Kasuga-cho, IRUMA-SHI, SAITAMA, 358-0006 JAPAN
TEL： +81-4-2966-0816
FAX ：+81-4-2966-0817
“GRAVITON” is trade mark of Graviton lnc. in Japan. Copyright 2006 by Graviton Inc. All right reserved. Never reproduce or republish without written permission.