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Date Code 20150130 Instruction Manual SEL-787 Relay
Preface
General Information
LED Emitter
The following table shows LED information specific to the SEL-787 (see
Figure 2.9 for the location of fiber-optic Ethernet PORT 1 (or 1A, 1B) and
PORT 2, the ports using these LEDs, on the relay).
The following figure shows the LED location specific to the SEL-787 (see
Figure 2.9 for the complete rear-panel drawing).
LED Location Specific to the SEL-787
SEL-787 LED Information
Item Fiber-Optic Ethernet Port 1 (1A, 1B) Port 2
Mode Multimode Multimode
Wavelength 1300 nm 820 nm
Source LED LED
Connector type LC ST
Typical Output power –15.7 dBm –16 dBm
LED Safety Warnings and Precautions
➤ Do not look into the end of an optical cable connected to an
optical output.
➤ Do not look into the fiber ports/connectors.
➤ Do not perform any procedures or adjustments that are not
described in this manual.
➤ During installation, maintenance, or testing of the optical
ports only use test equipment classified as Class 1 laser
products.
➤ Incorporated components such as transceivers and laser/LED
emitters are not user serviceable. Units must be returned to
SEL for repair or replacement.
Looking into optical connections,
fiber ends, or bulkhead connections
can result in hazardous radiation
exposure.
i4201a
PORT 2
TX RX
1
9
PORT 3PORT 1A PORT 1B
Fiber-Optic
Serial Port LED
Fiber-Optic
Ethernet
Port LEDs
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