Pendulum has successfully offered Frequency Distribution Amplifiers since 2002. Our products have always focused on distributing a reference frequency via optical fibers, resulting in many customer benefits, compared to distribution via coax:
– Extended range, up to 2 km
– No ground current loops
– No noise pickup
– EMP-proof distribution to secured areas
– Small and lightweight cable fits every cable duct
One legacy model, the modular DA-35 rack system, could distribute up to 36 fiber links from a central source to multiple users. Since its discontinuation in 2013, Pendulum had no multi-point fiber distribution solution – until now!
The new FDA-301 model, available for deliveries in June 2019, can distribute up to 18 fiber links, or 12 coax cables, to remote users. It can distribute:
- precise frequency reference sine signals, like 10 MHz (default) or any frequency between 100 kHz and 100 MHz
- synchronization pulse timing signals like 1-pps or IRIG DCLS time code signals
- serial time code like NMEA, or user-defined format
- E1/T1 clock or data reference signals, 2.048 or 1.544 MHz/Mbps
The 10 MHz sine inputs are standard, other inputs are optional.
All inputs are dual, in a master-slave configuration, with automatic change-over if the master fails, providing fail-safe input source redundancy.
FDA-301 has 3 output slots for various optional output modules. All coax and T.o.D. output modules have 4 connectors. All fiber output modules have 6 connectors.
There is also an option for external DC power, to provide power redundancy.
Our current DA-36, point-to-point Frequency Distribution Amplifier, will interface directly to FDA-301, and FDA-301 can be a drop-in replacement in current DA-35 or DA-36 networks.
What’s the difference between the current DA-36, and the new FDA-301?
|Distribute sine frequency||yes||yes|
|Distribute pulses (1-pps, IRIG)||yes||–|
|Distribute Serial Time-of-Day||yes||–|
|Distribute E1/T1 clock/data||yes||–|
|Fiber/coax input 10MHz||yes/yes||yes/yes|
|Auto change-over 10MHz input||yes||yes|
|Coax outputs 10MHz*||4 / 8 / 12||4|
|Fiber outputs 10MHz*||6 / 12 / 18||1|
|DC power option||yes||–|
*The number of outputs can be multiplied via cascading FDA-301 or DA-36
The lower cost DA-36 is an excellent electrical to optical converter and point-to-point distribution amplifier. The new FDA-301 will offer excellent point-to-multi-point distribution.
Download the data sheet here.