Manual,Compact Outdoor SSPAs
●This section provides information for the initial inspection, installation, external connections, and shipment of the Compact Outdoor SSPA unit
●Teledyne Paradise Datacom Outdoor SSPAs are available with a standard Ethernet & RS-232/RS-485 interface. This section summarizes the connections to a remote computer for various remote communications.
See the appropriate description of the Compact Outdoor or High Power Outdoor connections to Port J4.
●The Teledyne Paradise Datacom outdoor amplifier is available with a standard RS-232/RS-485 serial communications interface or an optional Ethernet & RS-232/RS-485 interface. This section summarizes the connections to a remote computer for various remote communications.
●Teledyne Paradise Datacom SSPAs are available with various L-Band up converter options. The primary up converter optio is the Zero dBm Block Up Converter, ZBUC. The ZBUC ® block up converter is offered in C-Band, X-Band, and Ku-Band configurations. The ZBUC converter offers ultra low phase noise for applications where phase noise is an overriding factor.
The type of ZBUC converter housed within your SSPA is indicated by its model number, as shown in Figure 1. The example in Figure 1 shows a 200W 3RU C-Band Rack Mount SSPA with Internal Reference ZBUC converter. For a full description of the configuration matrix, refer to the specification sheet for your amplifier.
The block up converters are high performance frequency translation devices which provide excellent phase noise and spurious performance.
The ZBUC converter utilizes Teledyne Paradise Datacom's proprietary "Smart Reference Technology". Smart Reference Technology allows the system user to change reference frequency and power level or choose internal or external reference without requiring any system configuration. An internal ZBUC converter adds about 1.7 pounds to the overall weight of the SSPA.
In rack mountable amplifiers, the block up converter is powered from a +15 VDC supply available from the Back Plane Boar Assembly of the SSPA. The Block Up Converter is simply cascaded with the SSPA at the input of the amplifier. Figure 2 shows the basic block diagram of the rack mount SSPA.
In outdoor amplifiers, the block up converter is powered from a +15 VDC supply available on the Fan Boost Converter board assembly. The Block Up Converter is simply cascaded with the SSPA at the input of the amplifier.
It is important to remember the requirement of a 10 MHz reference oscillator when operating an SSPA with ZBUC converter(SSPB). If the 10 MHz reference is not present, the M&C will report a BUC alarm and the SSPA module will mute. This ensures that no spurious or 'off frequency' transmission could originate from the unit.
●This section describes some of the standard maintenance practices that can be performed on the Compact Outdoor Amplifier and tips to troubleshoot common customer issues.
●An outdoor unit with firmware version 5.05 or beyond may be set up to use the switch control connector (Port J6) to control a single external maintenance waveguide switch (for example, to switch the output between an antenna and a dummy load).
Table 1 shows the pin-out of the Switch Port (J6).
In Maintenance Switch Mode (see the System Settings Table, Data Address 1), a maintenance switch can be placed in Position 1 or Position 2 by toggling the unit's Redundant Startup State setting between the Online and Standby values. The actual state of the SSPA will be determined according to the currently selected hierarchical address.
If hierarchical address "HPA1" is selected, the SSPA will drive the switch to Position 1 when the Redundant Startup State is selected to the "Online" value. The switch will be driven to Position 2 when the Redundant Startup State is selected to "Standby".
For "HPA2", the "Online" and "Standby" selection position for the waveguide switch will be in-verted: Position 2 = "Online" state; Position 1 = "Standby" state.
●Phase combining amplifiers has long been a popular means of increasing the output power of an amplifier system. Under high power microwave conditions it is common to utilize some form of waveguide hybrid coupler to combine the output power of two amplifiers. This coupler is generally a waveguide tee such as a four port magic tee. On the input side, common coaxial power splitters can be utilized to divide the power due to the lower power levels at the input of the system.
Figure 1 shows a typical block diagram of a phase combined amplifier pair. As long as the electrical delay, phase and amplitude of the two paths are kept within close tolerance of each other, the output power of the system will be twice the output power (+3 dB) of a single amplifier.
The main drawback of this approach is that in the event of an amplifier failure, the total output power decreases by 6 dB, or a factor of 4. This does not offer the system much in the way of redundant capability with such a large decrease in output power capability. The power decrease is due to the fact that with only one amplifier active, the output combiner acts as a power divider. The output power from the remaining amplifier is divided between the output of the system and the terminated port of the hybrid combiner. Thus only one half of the power from one amplifier reaches the output port which is 6 dB less than the combined output power from both amplifiers.
A high power system requiring a degree of redundancy needs some means of bypassing the combiner in the event of an amplifier failure. This would allow the full output power capacity of the remaining amplifier to reach the output. In this case the total RF output power would only decrease by 3 dB from the phase combined output power. A 3 dB reduction in output power is generally more tolerable to a system's link budget thereby giving the system a degree of redundancy.
A technique has been developed which accomplishes phase combining and provides redundancy with two waveguide transfer switches. A block diagram of such a system is shown in Figure 2.
This type of system is sometimes referred to as a "Fixed Phase" combined (FPC) system to differentiate it from the Variable Phase Combiner (VPC) systems commonly used with TWTAs. In the 1:1 Fixed Phase Combined system, the waveguide switches allow the amplifier outputs to either be directed into the combiner or bypass the combiner and connect directly to the RF output.
Teledyne Paradise Datacom has developed a series of controllers that greatly enhances the operation of the phase combined system. The FPRC-1100 Phase Combined System Controller is designed specifically to control 1 for 1 Fixed Phase Combined redundant amplifier systems. The FPRC-1200 Phase Combined System Controller allows remote control of 1 for 2 Fixed Phase Combined redundant amplifier systems.
Each controller can be used in either manual or automatic mode to monitor the system amplifiers for faults and operate the transfer switches. The controller has a very user friendly interface that allows the operator to monitor the composite output power of the system and adjust the gain of the amplifiers in 0.1 dB increments over a 20 dB range. The controller adjusts each amplifier in the system and keeps the amplitude of each balanced for optimal power combining. To the operator, the system appears as a single amplifier. The operator can choose between using the system as a phase combined system or a traditional redundant system.
●A system which includes an SSPA can be managed from a remote computer over a variety of remote control interfaces (see Figure 1).
Serial interface can be selected between RS-232/RS-485, Ethernet 10/100Base-T or FSK over IFL input (FSK interface is available only on units with an optional L-Band block up converter). RS-232/RS-485 interface can be used in conjunction with Paradise CO SSPA serial protocol (aka Normal protocol) or Legacy Paradise VSAT BUC serial protocol (aka VSAT protocol).
Outdoor SSPAs are capable of supporting simultaneous multiple remote control interfaces, depending on the protocol selection settings and drive of Baud0 and Baud1 pins on J4 M&C connector. See Table 2 under the Operational Basics section.
The Ethernet interface for units with firmware version 6.0 or later utilizes industry standard 10/100 Base-T IP protocol and supports the IPv4 addressing schema. Units with previous firmware versions use 10 Base-T IP protocol. Normally, straight-through Cat5e/Cat6 cable is used to connect the unit to a network hub, and a crossover Quick-Start cable is used to connect directly to a computer's Ethernet port.
●This section describes some of the tests performed on production amplifiers before shipment. Where possible, Teledyne Paradise Datacom maintains computer automated RF test stations to ensure a high level of accuracy and consistency to production amplifier testing.
●This section describes the control of a remote unit using Teledyne Paradise Datacom's free Windows-based Universal Monitor and Control software.
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Compact Outdoor SSPAs 、 Paradise Datacom Outdoor Solid State Power Amplifier 、 Paradise Datacom Outdoor SSPA |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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28 January 2020 |
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Revision Y |
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208495 |
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11.8 MB |
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