User manual

12 of 14
EMCORE Broadband
2015 West Chestnut Street
A
lhambra, California 91803-1542
Tel: [phone]
Fax: [phone]
Copyright 2008. EMCORE Corporation
EOS 6000 Optical A/B Switch
USER MANUAL | SEPTEMBER 9, 2008
a. Above the Pre-alarm power value (dBm), the output indicator is green;
b. Above the Switching Threshold but below the Pre-alarm power value (dBm), the output
indicator is yellow;
c. Below the Switching Threshold, the output indicator is red.
3) If the optic power of either the main line or backup line is higher than the Switching Threshold,
the output indicator is green, otherwise red.
Operation
1) If the working channel is on the main line currently, it will not switch to the backup line until the main
line’s optic power drops below the switching threshold and the backup line’s optic power is higher than
the switching threshold.
2) If the working channel is on the backup line currently,
a. For “mode 0”, it will not switch to the main line until the backup line’s optic power drops below the
switching threshold and the main line’s optic power is higher than the switching threshold.
b. For “mode 1”, it will switch to the main line at once when the main line’s optic power rises above the
Pre-alarm power value (dBm).
Manual Switch
The manual switch is enabled and will take effect only when the optic powers of two channels are both
either above or below the switching threshold in mode 0 or below the switching threshold in mode 1.
Normal Operating Condition
The normal operating condition is when the unit is powered on, receiving optical power on both its main
and backup working channels with optical powers above the pre-alarm power values. The optical switch
is positioned to passively direct the main optical power to the output port. In this case, the front panel
LED indicators, “Power”, “Main”, and “Output” are steady green, and “Backup” is blinking green.
Optical Characteristics
PROPERTY UNITS
MIN. TYP. MAX.
Operating Wave Length nm 1310 +/- 10 or 1550+/-20
Insertion Loss dB 1.0 1.3
Return Loss dB 55 60
Polarization Dependent
Loss
dB 0.06 0.1
Repeatability dB +/-0.01 +/-0.02
Isolation dB -60 -50
Input Optical Power dBm 24
Switching Time ms 25
General and Mechanical Specifications
PROPERTY REQUIREMENT COMMENTS
Switching Threshold 20 dB range – see datasheet Settable within range
Switching Mode Auto, Manual, remote