SERIES 310B SINGLE-CHANNEL AUDIO AUDIO • One-Way Audio Over a Single Fiber. • Bandwidth 20 Hz to 18 kHz. • THD < 3%. • SNR 50 dB. • Balanced or Unbalanced 600 Ohm Audio. • For Multimode Fiber. • Optical AGC Circuitry. • Diagnostic Indicators: Level/Loss and Audio Status LEDs. • ST Optical Ports. • Modular Units or Rack Cards. Systems in the 310B series provide reliable voice-grade transmission of audio signals in most applications. Incorporating AGC circuitry, the system does not require field adjustment. A unique two-color LED at the transmitter end indicates input audio level and clipping. The basic characteristics of fiber — no hum or pick-up, no interference from electromagnetic fields or radio frequencies, and no possibility of ground loop interference since fiber is not an electrical conductor — ensure that the quality requirements of intercoms, paging, and public address systems are met. 310B PRODUCT SELECTION HINT Part Number Description 310B-T 310B-R Transmitter Receiver Product Code Fiber Qty / Size Attenuation Max. (dB) Wavelength (in nm) 13 850 MULTIMODE SYSTEMS The 310B series transmits standard (monaural) audio signals. If high-performance stereo audio should be required, refer to the 312B series, page 19, or the 1312B series, page 26, for digitally processed audio. 1BXX 1 / 62.5 µ Other Specifications Power Requirements : 12~16 VDC at 75 mA; 12~16 VAC at 5 W. Options : AC Adapter, order 610P, one for each modular unit. Dimensions : Modular Units: 2.8" W x 3.75" D x 1.1" H (7.14 cm x 9.52 cm x 2.8 cm) Rack cards (all) occupy one rack slot. To specify, add -R to model number. 18 1996 Fiber Options Inc., Bohemia, New York 11716-2533 USA