Cambium PTP 670 Series, User Manual

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Chapter 2: System hardware PTP-SYNC unit
Page 2-42
PTP-SYNC specifications
The PTP-SYNC unit conforms to the specifications listed in Table 45 , Table 46 and Table 47 .
Table 45 PTP-SYNC unit physical specifications
Category Specification
Dimensions Width excluding ears 174 mm (6.69 in)
Width including ears 196 mm (7.54 in)
Height 31.5 mm (1.21 in)
Depth 79 mm (3.04 in)
Weight 0.485 Kg (1.1 lbs)
Table 46 PTP-SYNC unit environmental specifications
Category Specification
Temperature -40°C (-40°F) to +60°C (140°F)
Suitable for use indoors, or outdoors within a
weatherproofed cabinet.
Humidity 0 to 95% non-condensing
Waterproofing Not waterproof
Table 47 PTP-SYNC unit electrical specifications
Category Specification
Power supply Integrated with PSU
Power
consumption 1.5 W max
(extra power is required to supply a GPS receiver)
There are two timing inputs to the PTP-SYNC unit: GPS/SYNC IN (RJ-45) (
Table 48 ) and 1PPS IN
(SMA) ( Table 49 ).
Table 48 PTP-SYNC unit timing specifications - GPS/SYNC IN (RJ-45)
Category Specification
Signal type Differential 1 Hz signal
Common mode range –7 V to +7 V, relative to GPS/SYNC IN pin 2 (ground)
Maximum differential voltage ±5 V
Threshold ±0.4 V
Impedance 90 ohms to 110 ohms