Cambium Networks WB3665HH PTP-SYNC Unit for PTP 600 and PTP 650 TDD Synchronization

The Cambium Networks WB3665HH is the PTP-SYNC unit, an indoor synchronization unit for PTP 600 and PTP 650 Series point-to-point radios. It takes a 1 Hz or 1 PPS timing signal from a GPS module, a CMM or another synchronized timing device and passes it to the radio so collocated links align their transmit and receive frames, which reduces interference between them.

One PTP-SYNC is used per link, and up to 10 units can be daisy-chained to one timing source. It is phantom powered at 56 VDC over the PIDU/ODU cable (39 to 60 V at the unit, 1.5 W max), connects with standard Cat5e cable and RJ45 connectors, and shows power, GPS and sync activity on LEDs. The unit measures 180 x 35 x 80 mm, weighs 0.6 kg and is rated for -40 to 60 °C.

When timing is unavailable it can still keep collocated radios synchronized to each other. Links on two or more towers or rooftops need a GPS receiver or other synchronized 1 Hz source.

• Best for: sites with several collocated PTP 600 or PTP 650 links that need TDD synchronization to limit self-interference.
• System fit: Cambium PTP 600 and PTP 650 Series radios; timing from a GPS module, CMM or other 1 Hz / 1 PPS source.
• Important to know: one unit is needed per link; the GPS receiver or other timing source is a separate item.