FO-ST and FO-SR-04 20 kHz fiber-optic analog link

Two analog signals up to 20 kHz brought out of a high-field area or an anechoic chamber over fiber.

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2: Analog channels
DC to 20 kHz: Bandwidth
> 100 h: On 3 AA alkaline batteries
200 V/m: EMC validation, 500 kHz to 18 GHz

Full-scale input±16, ±32 or ±48 V
Optional input ranges±160 mV to ±100 V
Pulsed field600 V/m, 1 to 2.5 GHz
Dimensions175 × 75 × 25 mm

Two signals out of the chamber

The FO-ST measures two electrical signals at a source in a high electromagnetic field or an anechoic chamber. It sends them over fiber-optic cables to an FO-SR receiver placed in a low-field area. Bandwidth runs from DC to 20 kHz.

Gain jumpers set the full-scale input to ±16 V, ±32 V or ±48 V. Other full-scale inputs, from ±160 mV to ±100 V, are optional. The transmitter runs more than 100 hours on 3 AA alkaline batteries. It works with 2 or 4-channel bench-top receivers and with 6 to 12-channel 3U 19-inch receivers, bench-top or rack-mount.

Shielding and input filtering protect the FO-ST from EMI, EMP and the high voltages of plasma research. It is validated for EMC up to 200 V/m from 500 kHz to 18 GHz, and 600 V/m pulsed (5 % duty cycle, 5 µs rise time) from 1 to 2.5 GHz.

Specifications

Channels	2 (receivers: 2 or 4-channel bench-top, 6 to 12-channel 3U 19-inch bench-top or rack-mount)
Bandwidth	20 kHz (from DC)
Voltage input range	−48 to 48 V (± 16, ± 32 or ± 48 V by jumpers; optional ± 160 mV to ± 100 V)
Battery life	100 h (minimum)
Battery type	AA alkaline (3 batteries)
Dimensions	175 × 75 × 25 mm
EMC immunity, radiated field	200 V/m (46 dBV/m)
EMC immunity, pulsed field	600 V/m (5 % duty cycle, 5 µs rise time)