Cambium PTP 450 series, User Manual

Page: 28 / 180

PTP 450 User Guide Backhaul Master (BHM)
1-8
ptp-450 (July 2014)
Table 4 BHM LED descriptions
LED Color when active Status information
provided Notes
PWR red DC power
Always lit when power is
correctly supplied.
SYN/1 yellow Presence of sync Always lit on the BHM.
SES/2 green Unused on the BHM
GPS/3 red Pulse of sync
Continuously lit as pulse as
BHM receives pulse.
ACT/4 yellow
Presence of data activity
on the Ethernet link
Flashes during data transfer.
Frequency of flash is not a
diagnostic indication.
LNK/5 green Ethernet link
Continuously lit when link is
present.
Network connection
The network connection to a PTP 450 Series BHM is made via a 10 BaseT or 100 BaseT Ethernet connection.
Power is provided to the BHM over the Ethernet connection using a patented non-standard powering technique.
BHM power supply
The BHM power supply generates the BHM supply voltage (29 VDC) from the external DC source and injects the
supply voltage into the BHM.
The power supply is connected to the BHM and network equipment using Cat5e cable with RJ45 connectors.
See Cabling and lightning protection on page 1-13 .
The PTP 450 BHM can use the GigE power injector but it will not support GigE speeds.
Further reading on the BHM
For more information on the BHM, see BHM or BHS site selection on page 2-35 describes how to select a site for
the BHM or BHS.