GE Multilin
B30 Bus Differential System
3-25
3 HARDWARE
3.2 WIRING
3.2.10 IRIG-B
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The
IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the B30 operates an internal oscillator with 1
µs resolution and accuracy. The IRIG time code formats are serial, width-modulated codes that can be either DC level
shifted or amplitude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment
can use a GPS satellite system to obtain the time reference so that devices at different geographic locations can be syn-
chronized.
Figure 3–25: OPTIONS FOR THE IRIG-B CONNECTION
Using an amplitude modulated receiver causes errors up to 1 ms in event time-stamping.
UR-series device
BNC (in)
Receiver
RG58/59 coaxial cable
GPS satellite system
GPS connection
IRIG-B (–)
4A
+
827756A8.CDR
IRIG-B
time code generator
(DC-shift or
amplitude modulated
signal can be used)
4B IRIG-B (+)
UR-series device
BNC (in)
Receiver
Twisted-pair cable
GPS satellite system
GPS connection
IRIG-B (–)
4A
+
IRIG-B
time code generator
(DC-shift or
amplitude modulated
signal can be used)
4B IRIG-B (+)
NOTE
Summary of Contents for B30 UR Series
Page 10: ...x B30 Bus Differential System GE Multilin TABLE OF CONTENTS ...
Page 122: ...4 30 B30 Bus Differential System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 326: ...5 204 B30 Bus Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 412: ...A 12 B30 Bus Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 554: ...D 10 B30 Bus Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 566: ...E 12 B30 Bus Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 574: ...F 8 B30 Bus Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...