Fiber Optic Link Redundancy System (8:1)

       

The TXS/RXS 8:1 Fiber Optic Link Redundancy System provides fiber link redunancy by substituting a backup fiber optic link for any one of eight main fiber links

The TXS Transmit Router provides eight 2-way splitters and a single 8x1 router in a common 3 RU enclosure. One output of each 2-way splitter is accessible through a rear panel mounted “F” type connector to feed fiber optic transmitters. The other output of each 2-way splitter is connected to the input of the 8x1 router. The router output feeds a backup fiber optic transmitter

The RXS Receiver Router provides eight RF Sensing Switches and a single 1x8 zero loss switch in a single 3RU enclosure. Each of the RF Sensing Switches utilizes a DPDT relay to switch either the primary or the secondary signal input to the output. The signal is coupled from the primary input, filtered, amplified, and detected to operate the relay. When the input level is above a preset threshold, which is adjustable via the front panel, the relay coil is de-energized and the primary signal path is selected. If the signal falls below the preset threshold, the relay coil is energized and the secondary signal path is selected. Under a no power condition, the unit will default to the primary position

The outputs of the optical receivers in the primary fiber links are connected to the primary inputs of the sensing switches via rear panel mounted “F” connectors. The outputs of the sensing switches are accessed via rear panel mounted “F” connectors. The output of the optical receiver from the standby optical link is connected to the input of the 1x8 switch via a rear panel mounted “F” connector labeled RX Backup. The outputs of the 8x1 switch are connected to the secondary inputs of the sensing switches

In the event the primary optical link fails, the RXS will automatically switch the backup optical link to replace the failed primary optical link. The RXS will send a control signal to the TXS via RS-422 and route the input of the failed primary optical link to the standby optical link. This provides fiber link redunancy at a fraction of the cost of 1 to 1 fiber optic link redundancy

 

 

Features & Benefits

• The TXS/RXS System provides fiber optic link redundancy on an 8 to 1 scale - Redundancy for 1/8th the cost

• RF Detection Level is adjustable via front panel keypad & LCD

• Primary paths are prioritized. In the event of a multiple link failure, the most critical path is maintained

• If multiple paths fail, the path with the highest priority will be assigned the backup path. Ports are prioritized numerically from 1 - 8, i.e., if ports 2 and 3 were lost simultaneously, port 2 would switch to the backup link, etc. All other paths in backup mode are referred to as failed and are identifiable via front panel LCD display

• SNMP traps provide alarm status when system is in backup mode

• Input/Output Naming: 7-character alpha-numeric naming of inputs and outputs for easy reference

• Rear panel mounted RJ45 connector provides an Ethernet port for the M&C monitoring of the switch position

• Redundant power provided via dual AC inputs and dual internal PSUs

	TXS 2150	RXS 2150	TXS 070	RXS 070
Operating Frequency	950-2150 MHz	950-2150 MHz	70±20 MHz	70±20 MHz
Impedance	75 Ω	75 Ω	75 Ω	75 Ω
P1dB	+12 dBm	+10 dBm (backup)	+8 dBm	+8 dBm
Detected Frequency	N/A	950-2150 MHz	N/A	70±1 MHz
Detection Level	N/A	-50 to -20 dBm (adjustable via front panel keypad & LCD)	N/A	-50 to -20 dBm adjustable
Insertion Loss (Primary)	4.0 dB ± 0.5 dB	2.5 dB ± 1.5 dB	4.0 dB ± 1.0 dB	1.0 dB ± 0.5 dB
Insertion Loss (Backup)	3.5 dB ± 1.5 dB	2.5 dB ± 1.5 dB	3.0 dB ± 1.0 dB	0.0 dB ± 0.5 dB
Frequency Response	± 2 dB	± 2 dB	±1.0 dB	±1.0 dB
Isolation	50 dB (Splitter out to Switch Out)	40 dB	60 dB	50 dB
Return Loss	12 dB	12 dB	16 dB	16 dB
RF Connectors	Type-F, 75 Ω	Type-F, 75 Ω	Type-F, 75 Ω	Type-F, 75 Ω
Power Requirements	100-240 VAC, 60/50 Hz	100-240 VAC auto ranging, 60/50 Hz	100-240 VAC, 50/60 Hz	100-240 VAC, 50/60 Hz
Power Consumption	11 W	70 W	14 W	36 W
Local Control	Front panel keypad with LCD	Front panel keypad with LCD	Front panel keypad with LCD	Front panel keypad with LCD
Inter-module Control Data	RS-422	RS-422	RS-422	RS-422
Monitor	Ethernet	Ethernet	Ethernet	Ethernet
Mechanical	1 RU (1.75” H x 19” W x 14” D)	1 RU (1.75” H x 19” W x 14.0” D)	3 RU (5.25”H x 19”Wx 20”D)	3 RU (5.25”H x 19”Wx 20”D)
Weight	17 lbs. gross (boxed), 11 lbs. net	20 lbs. gross (boxed), 13.5 lbs. net	17.1 lbs (boxed) 11.1 lbs	19.1 lbs (boxed) 13.1 lbs
Options	BNC 50-75 Ω	BNC 50-75 Ω	BNC 50-75 Ω	BNC 50-75 Ω