S.I. Tech, Inc.Model 2811 / 2812 - ON-OFF Fiber Optic Link

Model 2811

Model 2812

Operation Mode: Simplex
Operating Wavelength: 820 nanometers (1300 nm option)
Transmission Distance: See distance chart
Optical Connector: ST or SMA
Power Requirements: See Chart 1
Input/Output: See Chart 2
Optical Power Budget: 10 dB
Operating Temperature: 0 °C to 50 °C
Altitude: Less than 10,000 ft.
Plastic Enclosure: 6" X 6.5" X 2.75"
(15.2 X 16.5 X 7 cm)
Weight: 2lbs. (1 kg)
Mean Time Between Failure: MTBF @ 25 °C = 800,000 hours
MTBF @ 50 °C = 300,000 hours
[Calculated using Belcore method]


UL Listed. Meets FCC requirements of Class A, Part 15 Computing Devices Standard.
Specifications subject to change without notice.

View Complete Technical Data Sheet (PDF)

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The S.I.Tech Model 2811 TR transmits a 10 KHz optical square wave over optic fiber when power is applied and control input shorted. The 2812 receiver detects this optical square wave and turns ON a 4PDT relay. If the fiber cable is removed, broken, or the remote transmitter or local receiver loses power, the relay in the local receiver will turn OFF.

The 4 sets of Form C (4PDT) relay contacts are provided on the rear panel via screw terminal blocks. The power input (+12 VDC or +24VDC) is also via screw terminals.

The fiber optic input/output is provided on the rear panel via ST receptacles, 905/906 compatible SMA receptacles are available as an option.

The front panel contains 2 indicator LEDs, a power ON indicator and a CARRIER (10 KHz detected) indicator.

Chart 1: Maximum Power Requirements

Input 2811 2812
+12VDC
+24VDC
50mA
50mA
200mA
200mA

Chart 2: 2811 and 2812 I/O Ratings

2811 Control Input 0 to 500 Ohms
Closure Isolated from
Power or Ground
2812 Contact Ratings
Resistive Loads
Maximums
Switching Power
Switching Voltage
Switching Current
Carrying Current
60W, 125VA
220VDC, 250VAC
2A
3A
2811 Application Example

Contact Information: Phone: 630.761.3640 Fax: 630.761.3644 Email: sales@sitech-bitdriver.com
S.I. Tech, Bit-Driver®, and Fiber Cluster® are registered trademarks of S.I. Tech, Inc.
©2015 S.I. Tech, Inc. All copy and images.