Features

	Two pole, eight positions
	<1dB insertion loss, excluding connectors
	200 - 600 µm fibre core
	Repeatability >0.02dB
	Durability >10 million cycles
	<3 s switching time
	Cross talk > -70dB
	Baudrates: 1200, 2400, 4800, 9600
	Operation via front panel, Rs-232, Rs-422 or Rs-485

The FM-1600 is a remotely controlled two pole, eight position fibre optic switch. Designed for use in FTIR spectroscopy, the FPM-1600 enables the user to insert one of eight different sensors or optical circuits between the optical source and the FTIR spectrometer.

The FPM-1600 switches both ends of the optical path eliminating the spurious spectral distribution problems encountered when using fibre optic bundle source distribution to the sensor array.

The FM-1600 is equipped with ST optical connectors and may be used with any fibre type with core sizes ranging from 200 to 600 µm.

The unit contains no wavelength selective optical components and therefore does not introduce spectral artifacts into the measurement process. In order to minimise etalon interference effects, all internal fibre endfaces are domed.

Operation of the FM-1600 Multiplexer may be accomplished using the instrument's front panel keyboard, its standard Rs-232 port or the optional Rs-422 or Rs-485 interfaces. When the optional Rs-485 interface is used, up to 100 unique addresses may be assigned for controlling multiple units.

Specifications

	Insertion loss: <1dB, excluding connectors
	Fibre core: 200 - 600 µm (specify)
	Switching & settling time: <3 s
	Repeatability: better than 0.02dB
	Durability: >10 million cycles
	Crosstalk: better than -70dB
	Baudrates: 1200, 2400, 4800, 9600
	Size: 21 x 12.7 x 35.6 cm
	Weight: 4 kg
	Operating temperature: 0 - 40 C