The uGPS is no longer shipping as of December 2018. It has been replaced with cnPulse. Refer to the cnPulse knowledge base for more information.
The UGPS module may be powered by an external source via the UGPS External Power Port. Alternately, the UGPS may be powered by a PTP 230 backhaul master or PMP 450 Platform AP via one of the UGPS Timing Ports. When the UGPS is powered by via one of the Timing Ports, the radio provides the necessary power to enable 1 PPS synchronization timing and serial GPS location data by the UGPS (which is sent back to the radio via the associated Timing Port). If the UGPS is receiving power on the External Power Port (via 30V DC power supply or CMM port) and power on Timing Port 1 or Timing Port 2 simultaneously, the UGPS defaults to using the external power supply.
External Power Only
Shown below are examples of external only powering for PMP 100 and PMP 400/430 units. In this case the UGPS is powered via straight-through RJ-45 cable connected to a Cambium approved 30V DC power supply. The UGPS may also receive power through the RJ-45 Power Port via a power-over-Ethernet port on a CMM4. The radios receive their GPS synchronization through a straight-through 6-pin RJ-11 cable connected to either Timing Port 1 or Timing Port 2 of the UGPS.
RJ-45 Pinout for Straight-through Ethernet Power Cable
PMP 100 AP receiving synchronization from external-powered UGPS
PMP 320 receiving synchronization from external-powered UGPS
One PMP 400/430 AP and one PMP 100 AP receiving synchronization from external-powered UGPS
Power from the Radio via UGPS Timing Port 1 or UGPS Timing Port 2
Shown below is an example of a UGPS unit powered from a PTP 230 BHM through an RJ-11 cable connected to either Timing Port 1 or Timing Port 2 of the UGPS. The UGPS may be powered by either Timing Port, and up to two radios may receive synchronization over the Timing Ports when the UGPS is powered in this fashion.
Note: This UGPS powering mode is currently supported only by PTP 230 BHM and PMP 450 Platform AP. Future Cambium Networks hardware releases will also support providing power to the UGPS.
When powering the UGPS via AP or BHM, the system uses a straight-through 6-pin RJ-11 cable to provide power to the UGPS and to retrieve GPS synchronization pulses and data from the UGPS. The following diagram shows the wiring of the cable for sync and power.
RJ-11 Pinout for Straight-through Sync / Power Cable
450i Series AP/BHM to UGPS cable
The 450i Series requires a special cable to connect the AP or BHM to a UGPS module. The AP/BHM to UGPS cable can be constructed from RJ12 to RJ 45 cable using the pin configuration described below:
Note: The AP/BHM will only power up the UGPS if it configured to do so.
PTP 230 backhaul master powering UGPS and receiving synchronization
PMP 450 AP powering UGPS and receiving synchronization
Two PTP 230 backhaul master units powering UGPS and receiving synchronization
PTP 230 backhaul master powering UGPS/receiving synchronization and PMP 100/430 receiving synchronization
