Lightning observation. lightning discharge. lightning phenomena.surges. lightning strokes. lightning waveforms. surge current.


Windmillfs 24/7 lightning monitoring system
Automatic Lightning Picturing Camera: PH700KG
Lightning passage capturing video system
Current Wave Recording System
Automatic Lightning Picturing System

Electric Charge Amount Surge Counter: PBQSC-501
Electric Charge Surge Counter
Independent Surge Counter
Remote Type Surge Counter

Electromagnetic Amplifier
Triaxial Magnetic Field Meter
Wideband Triaxial Magnetic Field Meter
Electric/Magnetic Antenna
Rogowski coil

EO/OE Converter (standard version)
EO/OE Converter (low power version)
3ch. OE Conversion Unit
3ch. Trigger Level Unit
Integral-ATT-EO Conversion Unit
Optical Fiber Isolation System

High speed multiple-lightning strokes recording system (16ch)
High speed surge waveform recording system (16ch)
High Speed AD Storage Device
2ch. Mass Storage Device
3ch. Mass Storage Device

GPS Clock
GPS Clock-DC

1-34 Kanda-Jimbocho,
Chiyoda-ku Tokyo 101-0051, Japan
TEL: 81-3-5962-8548
FAX: 81-3-6856-4866

China Office
Frank Jiang No.88 Pujiang RD, Changshu City, Jiangsu province, China
Cellphone: 15850818238

EO/OE Converter (standard ver.)

EO/OE Converter conducts long-term unmanned observations of waveforms created by lightning discharge which require optical isolation of analog signals over several months.
EO unit divides positive signals and negative signals into separate light emitting elements so that long-term battery-powered observations can be performed. The quiescent current consumption can be as low as 20mA.
EO Converter is independent of temperature variation as the light output is constantly adjusted in accordance with the input signal.
Requires external calibration at the time of setup.
Two optical fibers (200um core) are used conjointly.


1.EO Converter
Input impedance 50 ohm
Rated input power voltage 4Vpp-max
Input connector BNC
Output connector FC connector x 2CH
Power supply DC12 to 18V (external lithium battery)
Consumption current 20mA (with quiescent current )
100mA (at maximum amplitude signal input)
2.OE Converter
Output impedance 50 ohm
Rated output power voltage 4Vpp
Input connector BNC
Output connector FC connector x 2CH
Power supply DC }12V
Consumption current } 80mA
3.EO/OE Converter
Signal transmission ratio Pvs.P
Dynamic range 15mVpp to 4Vpp
Noise 15mVpp
Frequency 1Hz to 5MHz
Operating temperature limit 0 to 40

1.EO Converter
Dimension 40(H) x 86(W) x 137(D) mm (without battery)
Weight 0.5kg
2.OE Converter
Dimension 40(H) x 86(W) x 137(D) mm
Weight 0.5kg

1.Calibration of system
The signal transmission level needs to be calibrated at installation and thereafter on a biannual basis.

Direct lightning measurement with camera or VCR System. Rogowski Coil. optical-electronic converter (OE/EO).
Tel: 81-3-5962-8548@Fax: 81-3-6856-4866@e-mail
Copyright (C) M Square Corp. All Rights Reserved.