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Fiber Optic A/B Switch with Loopback
1. Specifications
Compatibility:
62.5/125 µm multimode fiber
Crosstalk:
-45 dB typical per FOTP-42
Data Rates:
Transparent to optical signal rates and formats
Mean Time Between Failures:
100,000 hours or 1,000,000 cycles
Optical Loss:
Less than 3.0 dB typical per FOTP-171 method B1
Sensitivity:
750 to 1450 nanometers
Switching Speed:
5 msec typical, 10 msec maximum
Temperature:
Operating: 32 to 97.6° F (0 to 40º C);
Storage: -4 to +158° F (-20 to +70º C)
Relative Humidity:
95% max, non-condensing
Connectors:
SW1010A: (6) ST, (1) 3.5 mm power input;
SW1009A: (3) duplex SC, (1) 3.5 mm power input
Power:
100-240 VAC, 50/60 Hz wallmount power supply, 12VDC output
Size:
2.5"H x 8.1"W x 10.8"D (6.4 x 20.3 x 27.4 cm)
Weight:
2.5 lb. (0.5 kg)
2. Introduction
The Fiber Optic A/B Switch with Loopback is an all-optical, fiber optic, latching-style A/B switch (maintains the connection even
when power is removed) that includes additional optical switching mechanisms to automatically loopback the unselected port. For
example, if position A is selected, the A port will be connected to the C port, while any signals received on the B port will be
looped back out port B. Likewise, if position B is selected, the B port will be connected to the C port, while any signals received
on the A port will be looped back out port A. This is especially useful in failover applications, because this added functionality
allows the “unused” circuit to be continuously tested to ensure that it is operating correctly and available for use if needed.
3. Installation
Place the switch in a location that is relatively free from vibration and mechanical disturbances.
Apply power to the switch by plugging the AC power supply module into the connector on the back of the switch, and then plug
the power supply module into a suitable source of AC power. Next, change the connection states of the switch by rotating the
front panel control knob between the A and B positions. This causes all of the internal optical switch mechanisms to switch to an
appropriate connection state before making any fiber optic cable connections to the switch. As soon as the fiber optic cables are
attached, the network connection between the C port and the selected network port (A or B) will be immediately active.
Now that the switch connection state is configured for your application, connect the “shared” network connection to the Port C
fiber optic connectors. Connect the one fiber link (of the two to be switched) to Port A. Connect the second fiber link to Port B.
NOTE: Make sure you connect inputs and outputs consistently.
