Irig-B - GE D30 Instruction Manual

3.2 WIRING
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices within
1 millisecond. The IRIG time code formats are serial, width-modulated codes which can be either DC level shifted or ampli-
tude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment may use a GPS
satellite system to obtain the time reference so that devices at different geographic locations can also be synchronized.
3
GPS CONNECTION
OPTIONAL

IRIG-B

TIME CODE
GENERATOR
(DC SHIFT OR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
The IRIG-B repeater provides an amplified DC-shift IRIG-B signal to other equipment. By using one IRIG-B serial connec-
tion, several UR-series relays can be synchronized. The IRIG-B repeater has a bypass function to maintain the time signal
even when a relay in the series is powered down.
3-22
GPS SATELLITE SYSTEM
RG58/59 COAXIAL CABLE
+
-
TO OTHER DEVICES
Figure 3–23: IRIG-B CONNECTION
Figure 3–24: IRIG-B REPEATER
D30 Line Distance Relay
RELAY
4B IRIG-B(+)
4A IRIG-B(-)
BNC (IN)
BNC (OUT)
(DC-SHIFT ONLY)
3 HARDWARE
3.2.9 IRIG-B
RECEIVER
REPEATER
827756A5.CDR
GE Multilin