Resources

The term BDC is commonly used to refer to the modules (which look like an LNB with the waveguide removed and replaced with a connector), and to the rack-mounted unit which might contain from one to several BDC modules.  BDCs are increasingly used in outdoor units at the antenna - ODUs, and have an indoor rack mounted controller - IDUs.  BDCs are commonly used when a client uses multiple BDCs and a single LNA to cover the entire band.

Using Orbital Systems Interface Products to bring 4 BDCs, 16 Modem/Receivers and a BUC, under the discipline of a single 10 MHz Oscillator.

The client needed multiple receivers/modems to cover 2 GHz of bandwidth (10.7 - 12.75 GHz). For each polarity, a wide band LNA, a highband BDC, and a lowband BDC were required. System performance required instant acquisition, high stability, and optimal BER, therefore external reference BDCs were needed.  The same high quality conditions were required to be met for the uplink.

Here is a redundant horizontal/vertical polarity solution using Orbital's Systems Interface Products to route the satellite signals.  This project includes both indoor (IDU) and outdoor segments (ODU).

One for two redundant LNA's, horizontal and vertical high/low BDCs all controlled by the same Orbital Master Oscillator and combined for output to various client devices.  All of the BDCs are in weather-tight enclosures out at the dish and are linked to the IDU through the IFL cable.

When you want to add a service without adding an entire new system, you need a Combiner.  For instance, you may want to add a second modem and you try to use a standard combiner, and suddenly you have lost or seriously impaired your 10 MHz signal, here's what to do. Perhaps you want to change from low drift PLLs to external reference LNBs and you need an Oscillator...

Orbital 2-way Combiner using 10 MHz from one of the modems and Hi Power Mux/Tee to insert BUC power.

An Orbital Mux/Tee in reverse is used to extract the 10 MHz signal from one of the modems, while blocking the modem DC.  The L-band signal from both of the modems is combined in a two-way combiner in preparation for being multiplexed with the 10 MHz reference, and the new more powerful DC supply.
This is done in order to properly combine the L-Band signals, and to re-integrate the 10 MHz reference after combining.  In addition, in this solution, the DC power from the modem is insufficient to power the new BUC.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital 2-way Combiner using 10 MHz from one of the modems and Hi Power Mux/Tee to insert BUC power.

An Orbital Mux/Tee in reverse is used to extract the 10 MHz signal from one of the modems, and modem DC to insert BUC power.  The L-band signal from both of the modems is combined in a two-way combiner in preparation for being re-integrated with the 10 MHz reference, along with the DC power, (filtered by the mux tees), provided by the modem.

Orbital 4-way Combiner using 10 MHz & DC from one of the modems and Standard Power Mux/Tee to insert BUC power.

An Orbital Mux/Tee in reverse is used to extract the 10 MHz signal and the modem DC.  The L-band signal from all of the modems is combined in a four-way combiner in preparation for being re-integrated with the 10 MHz reference, along with the DC power -filtered by the mux tees. Since this is a network using all F type connectors, the Orbital Mux/Tees are required to make an impedance transform for the BUC which has an N connector.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital 4-way Combiner using 10 MHz & DC from one of the modems and Standard Power Mux/Tee to insert BUC power.

An Orbital Mux/Tee in reverse is used to extract the 10 MHz signal and the modem's DC.  The L-band signal from both of the modems is combined in a four-way combiner in preparation for being re-integrated with the 10 MHz reference, along with the DC power - filtered by the mux tees.

Orbital 2-way Combiner with 10 MHz Master Oscillator.

With the 10 MHz reference and DC turned off on a pair of modems, only the L-Band is passed to the 2-way combiner.  An Orbital MOS (or a POS) provides the 10 MHZ reference to the Orbital Mux/Tee that integrates the signals and inserts the DC power.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital 2-way Combiner with 10 MHz Precision Oscillator.

With the 10 MHz reference and DC turned off on a pair of modems, only the L-Band is passed to the 2-way combiner.  An Orbital POS (or a MOS) provides the 10 MHZ reference to the Orbital Mux/Tee that integrates the signals and inserts the DC power.

Orbital 4-way Combiner with 10 MHz Master Oscillator and Hi Power DC insert for BUC.

With the 10 MHz reference and DC turned off on a quartet of modems, only the L-Band is passed to the 4-way combiner.  An Orbital MOS provides the 10 MHZ reference to the Orbital Hi Power Mux/Tee that integrates the signals and inserts the DC to the high power BUC.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Using an Orbital Hybrid Coupler to combine two combine and divide - using 10 MHz from one of the modems.

The L-Band signal from both of the modems goes to the Hybrid Coupler where it is combined and split to a pair of High Power Mux/Tees.  The 10 MHz reference is extracted and feeds a 10 MHz Splitter which redirects the signal to the pair of Mux/Tees.  The Mux/Tees multiplex the DC power with the L-Band and 10 MHz to re-integrate the combined signal for each of the BUCs.

Orbital Hybrid Coupler to combine and divide (2-way) - using MOS Oscillator and 10 MHz Switch for Redundant BUCs.

L-Band signals from two modems are combined and divided with an L-Band coupler.  The 10 MHz reference is provided by an Orbital MOS (10 MHz Master Oscillator), and is switched by  the waveguide.  The signals are multiplexed together by a pair of Orbital Hi Power Tees, providing high power DC to the BUCs.  The switching of the 10 MHz utilizes the mute function on the BUCs to turn one of them to full power, and leave one in standby.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital 2-Way Divider - extracting 10 MHz from Modem.

A Mux/Tee in reverse is used to block the DC from the modem, but extract the L-Band and 10 MHz signals.  The 10 MHz is sent to an Orbital 10 MHz Splitter to provide a reference signal to a pair of Hi Power Mux Tees.  The L-Band signal is routed through a two-way L-Band Divider and then sent to the pair of Mux Tees.  Each Hi Power Mux/Tee multiplexes the two signals with DC Power and feeds one of a pair of BUCs.

Orbital 2-way Hybrid Coupler with 10 MHz Precision Oscillator.

With the 10 MHz reference and DC turned off on a pair of modems, only the L-Band is passed to the 2-way combiner.  An Orbital MOS (or a POS) provides the 10 MHZ reference to the Orbital Mux/Tee that integrates the signals and inserts the DC power.  The advantage of the hybrid coupler is the 30 dB of isolation between the inputs.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital 2 way Divider - using Master Oscillator and 10 MHz Switch for redundant BUCs.

L-Band signals from a single modem is divided to feed two Hi Power Mux Tees, while the Orbital Master Oscillator provides a source to a 10 MHz Switch.  The 10 MHz switched signal is used to enable the BUC.  A pair of Orbital MT-40s multiplex the 10 MHz with the L-Band and DC power for the selected BUC.

Orbital 2 way Divider - extracting 10 MHz from the Modem and using a 10 MHz switch to enable one of a pair of BUCs.

An Orbital MT-25 Mux Tee in reverse extracts the 10 MHz signal from a modem for a 10 MHz Switch.  Orbital Mux Tees multiplex the L-Band and 10 MHz signals for a pair of redundant BUCs.

Products
» Bias Tee
» Diplexer
» Dual Power Tee
» Mux Tee
» Thru Tee

Orbital Redundant BUC Assembly.

Orbital IDU supplies power, 10 MHz and L-Band filtering to ODU.  10 MHz and DC are extracted, split and re-inserted with minimal loss. Orbital recommends this configuration (switched 10 MHz), since running both BUCs at full power gives no statistical advantage for redundancy.  It is possible that the redundant BUC will fail before the primary BUC with both BUCs running fully on.  No inrush current.  Instant "On" and lock.

Here's a few LNB solutions, for adding additional services, or perhaps you have just purchased a new LNB with external DC or dual DC. There are a few external reference examples as well.

Using Orbital Systems Interface Products to bring 3 LNBs and 3 Receivers under the discipline of a single 10 MHz Oscillator.

Using Orbital Systems Interface Products to bring 5 LNBs from two antennas under the discipline of a single 10 MHz Oscillator to feed 5 separate receivers.

If your modem does not provide a 10 MHz reference signal, or if that signal is not adequate to your needs, the high quality Orbital TCXO Master Oscillator (such as a MOM), or an even better Orbital ovenized OCXO Precision Oscillator (such as a POP) is just the ticket. Here are some standard applications for Orbital Oscillators. There many additional applications included in the Combiner solutions that demonstrate the integrations of the Orbital Oscillators with 10 MHz Splitters and other Systems Interface Products. Orbital Oscillators can come as standalone modules, in stacks, on plates, or in a standard rack.

Using a standalone Master Oscillator (MOM or POP) provides a stable, high quality reference  to phase lock any and all external reference devices in the system.

Advantages:
• reference signal can be split and distributed to multiple devices throughout the system
• the system is free of dependence on a single modem or power supply
• independent oscillator power supply provides immunity from ground loops, modulations, and transients
• the system architecture is now flexible, free to add additional components as needed
• exceptional quality ensures improved phase noise, bit error rate, and C to N.

Products
» Master Oscillator
» Master Oscillator Module
» Master Osc Dual Modules
» Precision Oscillator
» Precision Osc Package
» Precision Osc Dual Mods

Using a Master Oscillator Dual Modules (or Precision Oscillator Dual Modules) to provide a 10 MHz reference signal to a BUC, and an LNB or BDC...

In this solution the dual independent outputs of the oscillator provide precision 10 MHz reference to each Mux Tee module allowing independent DC power to each device.  In a VSAT, this can be high power to a BUC, and low power to an LNB.  For a dual polarity system, each of LNBs is fed by its own Mux Tee module for optimum isolation.

The modular architecture of the Orbital product line allows the assembly of these modules into a single encapsulated unit complete with rack-mounting provisions.

Using a Master Oscillator Dual Modules to provide a 10 MHz reference signal to a pair of BDCs feeding eight receivers using two four way splitters...

Once a Master Oscillator and Mux Tees have been put into place, a secure, locked, L band only signal is available for distribution to any number of receivers.  The dividers can provide port to port isolation, assuring independent operation of the receivers.  No contamination of the reference signal is allowed by the 92 dB isolation of the Orbital Mux Tees.  The result is improved BER, lower phase noise, and increased system reliability.

Using an Orbital 10 MHz Splitter to provide 10 MHz reference signals to three BUCS using Orbital MT25 Mux Tees

Orbital Oscillator are designed to provide a high output level to allow splitting the reference signal to feed multiple devices.  The passive 10 MHz splitter, (that does not contribute noise - no active devices) divides the reference signal with minimal lass, excellent VSWR, and high port to port isolation.  This is important because reference devices can generate interfering signals that must not be allowed to reach other locked devices.  Normal splitters do not have a high level of isolation.

Systems Interface Products
Although Combiners and Oscillators are also SIP products, we have narrowed the definition here to just include Bias Tees, Diplexers, Mux Tees, TTL Switches, Thru Tees, Dual Power Tees, etc.
Here are standard applications for each of these products.  Here's how to insert 10 MHz, insert DC, extract 10 MHz, block DC, extract DC, multiplex DC L band and 10 MHz, and perform impedance transforms while you do it.