User's Guide Part 1

Table Of Contents
Chapter 2: System hardware PTP-SYNC unit
PTP-SYNC unit interfaces
The PTP-SYNC front panel is illustrated in Figure 31. The annotated interfaces are described in
Table 32 and Table 33.
Figure 31
PTP-SYNC front panel
Table 32
PTP-SYNC interface functions
#
Description
Function
1 GPS/SYNC IN Input from GPS receiver or from the daisy-chained SYNC OUT signal of
another PTP-SYNC.
2 SYNC OUT Output to daisy-chained PTP-SYNC units.
3 USB Input for software upgrades. Contact Cambium for instructions.
4 1PPS IN Coaxial alternative to GPS/SYNC IN. Peak input voltage must not exceed 5 V.
5 LED bank LEDs and their functions are described in Table 33.
6 PIDU IN Input from PSU.
7 ODU OUT Output to ODU.
8 Ground stud For connecting to a ground point.
Table 33
PTP-SYNC LED functions
LED
Function
GPS GPS satellite data detection.
SYNC SYNC OUT port data detection.
STATUS Power and satellite lock detection.
ODU ODU signal detection.
For a full list of LED states and fault-finding actions, refer to Testing PTP-SYNC on page 8-15.
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