Reason Tecnologia S.A.
17
Figure 9: Electrical and Optical Inputs of time synchronism
To synchronize the equipment using optical fiber, adequate optical fiber should be used, respecting a minimum
bend radius of 30 mm, according to Chapter
To synchronize the equipment using the electrical input, it is recommended the use of twisted pair.
For distances over 3 m, the use of an optical fiber cable is recommended to minimize the effects related to EMC.
The length of the optical fiber cables should not exceed 2 km.
4.5.1
Selection of the Time Reference Input
An electrical jumper allows selecting the input to be used as time reference. Making the connection in the
I
NPUT
S
ELECTION
connector, as shown in Figure
, the electrical time reference port is enabled. In case the
jumper is disconnected, the equipment operates using the optical time reference port.
Figure 10: to select the time reference input (if connected, enables the electrical input)
The jumper connections should use insulated flameproof flexible cable (BWF type) with a 1.5 mm
2
cross sec-
tion, 70
◦
C thermal class, and 750 V insulation voltage.
RT411 - User Manual
[rt411-manual-en rev 1.1]
