Specialists in Fibre Optic Systems and Electronic Design

Telephone :-           In the UK call 0845-370-7760         Outside the UK call +44-798-669-7680
Postal Address :- Fisher Consultants, 8 Parkside, Belper, Derbys. DE56 1HY, U. K.

Telephone :-           In the UK call 0845-370-7760
                       Outside the UK call +44-798-669-7680
Postal Address :- Fisher Consultants, 8 Parkside,
                                  Belper, Derbys. DE56 1HY, U. K.

We offer Digital Multi-Channel, High Speed Single Channel and an Analogue Single Channel Fibre Optic Systems.

Our Analogue Fibre Optic Transmitter and Receiver are used where Galvanic isolation is required for high voltage applications and where Ground Loops and low voltage potentials can cause errors in sensitive equipment.
The Analogue Single Channel System is compatible with the Dymec 5600 Series of Fibre Optic Transmitters and Receivers.
The Hand held calibrator receives light from the fibre optic and interprets the frequency of the modulated light to show the equivalent input voltage. The Calibrator is a digital instrument with an accuracy better than +/- 0.1% and a resolution of 1 mV. The Calibrator displays the expected receiver output in volts when the frequency is in the specified range, or the frequency of the light when this is outside of the range
160 kHz to 240 kHz. 
Battery voltage is displayed at switch on and the unit automatically switches off after 2 minutes.
There is a low battery voltage warning.
A back light is provided for use at night

Transmitter Specification:
Input signal voltage range   +/- 0.5 volts to 10 Volts 
Supply Voltage      8 to 20 Volts 
Supply Current      4.5 mA dc
Overall Size, including connectors  50 mm (l) x 50 mm (w) x 20 mm

Optical Specification :-
Optical Output     Frequency Modulated Infra-Red light 
Attenuation Budget    16 dB
Transmission Distance    > 1 km
Optical Connectors    SMA
Modulation Frequency    200 kHz +/- 20 kHz

Transmitter Specification:
Input signal voltage range :-   +/- 0.5 volts to 10 Volts 
Supply Voltage     8.5 to 20 Volts 
Supply Current     7.5 mA dc
Overall Size, including connectors  50 mm (l) x 50 mm (w) x 20 mm

Optical Specification :-
Optical Output     Frequency Modulated Visible Red light 
Attenuation Budget    30 dB
Transmission Distance    > 1 km
Optical Connectors    SMA
Modulation Frequency    200 kHz +/- 20 kHz

Receiver Specification :-
Output Voltage     +5 volts to -5 volt
Supply Voltage     +&- 15 Volts
Supply Current     +25 mA -2 mA
Overall Size, including connectors  98 mm (l) x 65 mm (w) x 20 mm (h)

Hand Held Calibrator Specification :-
Optical Input     Frequency Modulated Infra-Red to Visible Red light
Frequency Range     D.C. to >300 kHz
Measurement Frequency Range  160 kHz to 240 kHz for output voltage reading
Battery      PP3, MN1600 etc.
Battery life      > 3 Hours with back light on
       > 5 Hours with back light off