Options - Option E02 Four Configurable Fiber-Optic Outputs

Summary Information

Provides four, individually-selectable fiber-optic outputs with Type ST connectors and 820 nm transmitters compatible with multimode fiber (typically 62.5/125 µm). Available on the Model 1201B/C.

Full Description

Four Configurable Fiber-Optic Outputs, as installed on rear of chassis.

These outputs are jumper-configurable to each of the digital (CMOS) signals listed under 'Output Functions' for the applicable clock. Analog (IRIG-B modulated and ± 5 V recorder) signals are not available.

Provides an optical power output of - 15 dBm minimum, - 12 dBm typical, into 62.5/125 µm fiber. Using this 62.5/125 µm fiber and the Model 10881A Fiber-Optic to Logic Adapter, the optical power budget is 8.0 dB minimum, 15.0 dB typical. The transmitter is also usable with 50/125 µm, 100/140 µm, and 200 µm PCS fiber.

This power capacity allows fiber link lengths of 2.3 km (7500 ft) worst-case, 5 km (3 miles) typical, with fiber having attenuation of 3.5 dB/km maximum, 2.8 dB/km typical. The optical signal is ON whenever the selected logic signal is HIGH. Transmitter bandwidth is compatible with all available logic signals; the Model 10881A Fiber-Optic to Logic Adapter is compatible with all available logic signals up to 5 Mpps. See Application Note 101 [PDF~69 kB] for information about timing distribution systems.

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