1. Codan 5700 Series C-Band Transceiver
Redundancy Switching Equipment

2. Redundancy Switching Components
Type 5586 Redundancy Controller Module
Combined Waveguide/N Switch OR
Rx Waveguide Switch + Tx Waveguide Switch
Optional indoor 1-RU System Monitor (5587)
Optional 5570D Remote Controller
The 5586 Redundancy Controller is an outdoor mounted module which is usually mounted on the antenna base. The 5586 always switches transmit and receive paths together. The 5586 controls the RF switch(es), IF paths and control signals between the 5586 and Transceiver modules.
The RF switch(es) control both the transmit and receive RF paths. The two types of RF switching offered are two waveguide RF switches, one for transmit and the other for receive or a combined waveguide/N switch, the waveguide for receive and the coaxial N type switch for transmit.
The 5587 Indoor Redundant System Monitor Unit duplicates all the controls and indicators of the 5586 allowing indoor monitoring of fault status and control of the Regardless of whether the 5586 is set to automatic or manual switching the 5587 can be used to force a switch over.
For individual fault monitoring and control of the transceivers an optional 2RU 5570D is available. The 5570D is connected directly to the Redundancy Monitor 5587.

3. Redundancy Controller Connectors
50 Ohm N-type connections provided for IF.
19-way MIL connectors provided for control of transceiver and alarm outputs.
Separate 19-way MIL connectors provided for RS232/485 or hand-held controller.
Sealed glands for DC power and switch control cables.
The transmit and receive IF connectors are 50 ohm N-type to connect to the modem. A 75 ohm hardware field-installable option is available which is installed within the 5586 just behind the modem IF connections. This option provides impedance matching from 75 ohm to 50 ohm, the 50 ohm mismatch contributed by the IF connectors is negligible.
The 5586 interfaces with the two converters via 19-way connectors and 5m cables which mate with the M&C connectors on the converters.
There are two glands provided for connecting up to two switches with 5m 6-way cables. A further two glands allow for the 5m 48V DC power cables to be connected. When using High Power transceivers, 2 such cables are provided which connect the auxiliary 48VDC from each SSPA to the When using Low Power transceivers a 10m length of 2-way bare cable is provided which must be cut in two and connected between each power supply unit and the In cases where the customer provides the 48VDC power, arrangements to mate these cables to the customer’s supply must be made.
Two 19-way connectors are provided to interface to 5560 Hand Held Controllers or PC terminals or 5570 Remote Controllers.
The 19-way alarm and control connector is used by the customer to access dry alarm contacts. It is also used to connect to the optional 5587 Indoor Monitor unit.
A further two N-type connections are provided to allow for testing of the off-line stream without interfering with system operation. A test signal may be injected into the transmit connector and the output tested at the dummy load on the transmit waveguide switch or N-type part of the combination switch depending on which is used.
A test signal may also be injected into the blanked port of the receive waveguide switch (by removing the plate and using a suitable adaptor) which is tested at the receive test connector on the 5586.

4. System Configuration
Provides stream redundancy
Two RF switch options:
Individual Tx & Rx waveguide switches (for W/G SSPA’s)
Combined Tx-N/Rx-W/G switch (for ‘N’ SSPA’s)
Redundancy controller provides IF switching
Test port access for off-line stream: RF
Rx - WR229 W/G
Tx - WR137 (dual W/G switch system) or N (single W/G switch system) IF
N connectors (50 ohms) Note: There is a 75-ohm customer interface option
Optional transmit splitter for HP SSPA output alarm monitoring
Two completely independent streams are used. If any module of one stream indicates a fault, the 5586 automatically switches to the other stream.
The combined waveguide/N switch is a single switch that provides waveguide switching for receive and coaxial switching for transmit. The waveguide switches are two individual switches, one to switch the receive waveguide path and the other to switch the transmit waveguide path.
The IF paths are switched inside the 5586 removing the need for an additional external switch. The IF impedance is standard at 50 Ohms although a 75 Ohm option is available.
The off-line stream can be tested as installed by utilizing the IF test ports on the 5586 and the fourth N connector and/or waveguide port of the RF switch(es).
A 2-way IF splitter option is available to allow power alarm monitoring of the off line stream in a “hot-standby” configuration. This option is only available with the high power SSPA’s.

5. System Operation Redundancy controller powered from both streams
Controller monitors:
Converter, LNA, SSPA, Fan and Temperature Faults
Can optionally include Warm-Up as a “Fault” to cause switch-over
Controller provides remote M&C:
Stream selected, Switch fault & Summary faults for stream 1 & 2 (contact closures)
Input to force selection of stream 1 or 2 (opto-isolator)
SSPA Activate and SSPA Inhibit inputs (opto-isolators)
The 5586 is powered by the 48V Aux outputs either from each Power Supply Unit or each High-Power SSPA if using a 60W or higher system, one from each stream. In the unlikely event of one power supply or SSPA failing power is still available via the working power supply or SSPA.
The 5586 monitors all fault outputs of the transceiver. If a module indicates a fault the 5586 will automatically switch to the other stream. The RF switch(es) is also monitored to ensure that the switch(es) has switched over. The 5586 can also be configured to recognize the Warm-Up period as a fault.
The 5586 provides Monitor and Control indicating the stream on-line, stream failure and switch failure, SSPA activation and inhibit can be controlled via the 5586 as well as manual or automatic switching of the streams. Each stream can be remotely controlled by using the individual stream serial ports on the front of the 5586.
If SSPA INHIBIT is selected from the 5586 or the indoor 5587, both SSPA’s will be inhibited from transmitting. If SSPA ACTIVATE is selected on the 5586 or 5587, only the on-line stream will be activated, unless the transceivers are already independently activated.

6. Manual Non-Redundant Operation
Connector configuration permits non-redundant re-configuration in the event of a Controller fault
Connect IF and Control cables directly to operating transceiver
Manually switch W/G switch(es) to required position
Manual override provided on waveguide switches
Manual override actuator cover has small clearances, fit carefully & ensure O-ring seal is correctly fitted
If possible, test electrical switch-over operation after replacing cover - use manual Stream Select switch
In the unlikely event of the 5586 failing the controller can be bypassed by simply connecting the input and output IF cables from the 5586 directly to the on-line stream. It may still be possible to switch the RF switch(es) over by selecting manual on the 5586 and switch to the desired stream.
If the need arises to switch streams with the 5586 completely unpowered the RF switch(es) can be manually switched by removing the actuator cover and physically switching to the other stream. Ensure that the actuator cover is re-installed with the gasket to stop moisture entering the switch, and it does not scrape the actuator.

7. Low Power Redundancy
The 5W, 10W, 20W, 30W and 40W transceiver can be either mounted on the antenna boom or the antenna pedestal.
Standard mounting kit supplied is designed to be mounted on the antenna boom
The 5586 Redundancy Controller and the two 5582 Mains Power Supplies are mounted on the antenna pedestal

8. High Power Redundancy
The 60W or 120W mounting hardware is designed to be mounted to the antenna pedestal with the 5586 Redundancy Controller
Although this picture shows the older designed High Power SSPA’s the mounting design is very similar.
The SSPAs and converters are mounted on the pedistal of the antenna side by side using extra mounting hardware provided.
The waveguide switches are two individual switches, one to switch the receive waveguide path and the other to switch the transmit waveguide path. The transmit switch is mounted between the two SSPAs using waveguide bends and straight sections provided. A load bolts to the offline output port.
The receive switch is mounted either directly onto the receive port of the OMT or via a TRF. The LNBs bolt on to the switch via short waveguide sections. A blanking plate bolts to the offline receive port. This plate has a hole and a nozzle is provided if air extraction is desired. If this is not needed a bolt and washer are provided to seal the hole.
The redundancy controller mounts on the same hardware used to mount the SSPA’s and converters
The monitor unit is mounted indoors on a standard 19” equipment rack and connected by a 50m cable as standard, other lengths are available.
The remote controllers (or dual remote controller) may be connected either directly to the redundancy controller via two 50m cables as standard (other lengths available) or “piggy-backed” onto a 5587 monitor unit using short (50cm) cables. Both the 5570 and the Dual 5570 mount onto standard 19” racks.

9. 5587 Redundancy Monitor
Duplication of the 5586 Redundancy Controller internal switches and LED indicators.
1RU high assembly
Provides summary alarm for each stream and RF switches
Allows forced switch over between streams
Power is supplied from the Redundancy Controller through the interface cable up to 100m.
The controls and indicators of the redundancy controller are duplicated on the front panel of the redundancy system monitor, which is used for remote applications. The redundancy system monitor provides this capability via the monitor and control interface of the redundancy controller.
The 5587 redundancy monitor is supplied with a 50m cable although longer lengths are available.

10. Dual 5570 Remote Controller
Full function, permanently-installed, configuration, monitor & control and maintenance.
2RU high may be “piggy-backed” to the 5587 C-Series Indoor Monitor.
Power is supplied from the Redundancy Controller through the interface cable.
The Dual Remote Controller, 5570D, is a space saving 2RU version of the 5570 Remote Controller. It is designed to interface with the 5587 C-Series Redundant System Monitor via two 50cm cables avoiding the need for additional M&C cables running out to the 5586 Redundancy Controller.
The 5570D is powered via DC from the 5586, via the If the 5587 is being used with an long M&C cable, over 100m, an external DC plug pack is required to power the 5587, which in turn powers the 5570D.

11. Redundant Block Diagram
Outdoor
5570D Remote Controller
5587 Redundancy Monitor
5582 PSU
5586 Redundancy Controller
5700 Converter
SSPA
LNA
M&C Cable
AC Power
48V DC
M&C
Rx IF
Tx IF
Tx RF
Tx RF O/P
OMT
Termination
Blanking Plate
Rx RF
Power Control
Rx switch control
Tx switch control
Modem or other equipment
Indoor
The SSPAs are mounted side by side using extra mounting hardware provided. The converters are also mounted side by side using extra hardware.
The combined waveguide/N switch is a single switch that provides waveguide switching for receive and coaxial switching for transmit. The separate waveguide switches are two individual switches, one to switch the receive waveguide path and the other to switch the transmit waveguide path. When installing the combined waveguide switch, it must be either directly onto the receive port of the OMT or via a TRF. The LNAs are bolted directly to the switch. A blanking plate bolts to the offline receive port. This plate has a hole and a nozzle is provided if air extraction is desired. If this is not needed a bolt and washer are provided to seal the hole.
The transmit switch is mounted between the two SSPAs using waveguide bends and straight sections provided. A load bolts to the offline output port. The receive switch is mounted either directly onto the receive port of the OMT or via a TRF. The LNAs bolt on to the switch via short waveguide sections. A blanking plate bolts to the offline receive port. This plate has a hole and a nozzle is provided if air extraction is desired. If this is not needed a bolt and washer are provided to seal the hole.
The redundancy controller mounts in a semi-sheltered location under the antenna. All cable terminations must be well-sealed with the self-amalgamating tape provided.The monitor unit is mounted indoors on a standard 19” equipment rack and connected by a 50m cable as standard, other lengths are available.
The remote controllers (or dual remote controller) may be connected either directly to the redundancy controller via two 50m cables as standard (other lengths available) or “piggy-backed” onto a 5587 monitor unit using short (50cm) cables. Both the 5570 and the Dual 5570 mount onto standard 19” racks.
Tx RF O/P

12. System Installation & Maintenance
Codan recommendation is to activate both SSPA’s
Use SSPA control switch on Converters
SSPA faults cannot be detected unless SSPA is on
Test redundancy switching operation regularly
Verifies that system will switch over in the event of a failure
Warning: This does cause momentary service interruption and is best done at low traffic times
You cannot manually switch more often than once every 5 seconds
It is recommended that the two streams are activated via the SSPA control on the front panel of the 5700 because SSPA faults are not detected unless the SSPA is operating. Having the off-line stream activated means that if there is a fault the switch over time takes approximately 50m sec. However it is possible to leave the off-line stream in standby. When the stream is switched over the standby module will turn on and, if the SSPA is set to activate, the SSPA will activate. Having this configuration will take approximately 2 sec before the stream is on-line. This method is NOT recommended, unless power saving is critical.
Within Europe, system integrators may wish to ascertain if fully compliant CE operation is required. In this mode, a station should NOT automatically re-start in the transmitting mode after a primary power interruption. This mode can be established by setting all hardware SSPA ACTIVATE switches to REMOTE (i.e, on both converter front panels, in the 5586, and on the 5587 if present.) The command SPU1 should then be sent to each converter, and subsequent power interruptions will always require the SPA1 command to be re-sent (to each stream) to activate the SSPAs. Naturally, this may not be a desirable operating mode for un-manned and/or critical applications.
It is recommended that the 5586 is tested occasionally to ensure the complete system is operational. Testing will give a momentary loss of signal so it is recommended to do this at a time of low traffic. When manually switching between streams a 5 sec interval is required before being able to switch streams again. This 5 seconds allows the storage capacitor inside the 5586 to recharge.

13. Why Stream Redundancy? Stream redundancy vs Module redundancy
Only two switching points - at IF in/out and RF in/out
Less wiring & cables
Simple, more reliable controller
Lower cost (saves cost of expensive RF switches between modules)
Main disadvantage of Stream Redundancy:
May not always cope with more than one module failure, but:
High module reliability (200,000 hr MTBF)
Probability of two simultaneous failures very small
Failed module usually replaced/repaired quickly
The advantage of stream redundancy against a module redundancy system is that there are only two switching points, one at IF and the other at RF. Because of the use of only IF and RF switching the cost is lower as there is no need for additional switches between modules resulting in less cables. It is also a simpler system resulting in more reliability.
The obvious disadvantage of stream redundancy is it is possible for a module in each stream failing. Fortunately Codan modules have MTBF figures greater than 200,000hrs and the probability of two faults on separate streams occurring is very small. Codan also provides quick repair times. Returned equipment is either repaired or replaced.