antenna is connected to the cable, connect the cable to the receiver.
REx670 must be switched off when the antenna cable is connected.
19.2.20.3 Technical data
Table 713: GPS – Antenna and cable
Function Value
Max antenna cable attenuation 26 db @ 1.6 GHz
Antenna cable impedance 50 ohm
Lightning protection Must be provided externally
Antenna cable connector SMA in receiver end
TNC in antenna end
Accuracy +/-2μs
19.2.21 IRIG-B time synchronization module IRIG-B
19.2.21.1 Introduction
The IRIG-B time synchronizing module is used for accurate time synchronizing of the
IED from a station clock.
The Pulse Per Second (PPS) input shall be used for synchronizing when IEC
61850-9-2LE is used.
Electrical (BNC) and optical connection (ST) for 0XX and 12X IRIG-B support.
Optical connection (ST) for 1344 IRIG-B support.
19.2.21.2 Design
The IRIG-B module have two inputs. One input is for the IRIG-B that can handle both
a pulse-width modulated signal (also called unmodulated) and an amplitude modulated
signal (also called sine wave modulated). The other is an optical input type ST for PPS
to synchronize the time between several protections.
Section 19 1MRK505222-UUS C
IED hardware
1132
Technical reference manual
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