Chapter 5
Timing Signals – IRIG-B
and Event Triggering
5.1
Introduction
This section should help you with understanding, choosing and con-
necting the correct outputs from the Model 1095A/C series clocks to
synchronize your external equipment, such as protective relays.
It
should also answer some basic questions, such as:
• What are the different types of IRIG-B?
• How do you connect multiple devices to one timing output?
• How far can you transmit timing signals?
• What type of cabling and connectors should I use?
The steps involved in synchronizing your devices to the GPS are
fairly simple and should not take long to complete. To expedite the
process, make sure that you know:
1. the type of timing signal each piece of equipment requires, and
2. how to enable the equipment to receive the timing signal.
Various methods are used to configure equipment to receive IRIG-B
time codes including setting a physical jumper, or setup program. Some
equipment can auto detect the timing signal, so that nothing else is
required, other than connecting the cable.
