Chapter 7
Timing, IRIG-B and Pulses
7.1
Introduction
This section should help you with understanding, choosing and connecting the correct outputs from
the Model 1084A/B/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, and what are the differences?
•
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 getting your devices synchronized 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 for IRIG-B 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.
7.2
Timing Output Description
When viewing the rear panels of the Model 1084A/B/C, you will see that there are a number of
different types of connectors as illustrated in Figure 7.1. Generally, there is a power inlet connector,
a GPS antenna connector, two DB-9 serial connectors (one is an optional RS-232 port), two SPDT
relay connectors and three timing outputs. If required, space for an optional fiber optic port with
type ST connector is available. Finally, the Model 1084A/B/C series clocks also have an option
plate that may be replaced by any one of several auxiliary boards.
Summary of Contents for 1084A
Page 4: ...iv ...
Page 6: ...vi ...
Page 18: ...xviii LIST OF FIGURES ...
Page 24: ...4 Unpacking the Clock ...
Page 36: ...16 Connecting Inlet Power Input and Output Signals ...
Page 44: ...24 GPS Antenna and Cable Information ...
Page 114: ...94 Startup and Basic Operation ...
Page 123: ...B 4 Physical Dimensions 103 Figure B 1 Suggested Mounting of the AS0094500 Surge Arrester ...
Page 124: ...104 Using Surge Arresters ...
Page 134: ...114 Options List C 6 2 Option 06 Firmware Setup Figure C 3 Option 06 Firmware Setup ...
Page 142: ...122 Options List Figure C 5 Option 06 Output Jumper Settings ...
Page 158: ...138 Options List Figure C 13 Option 17 Board Layout and Jumper Locations ...
Page 163: ...C 13 Option 20A Four Fiber Optic Outputs 143 Figure C 14 Option 20A Jumper Locations ...
Page 170: ...150 Options List Figure C 16 Option 23 Internal Jumper Setup ...
Page 172: ...152 Options List Figure C 17 Option 27 Jumper Locations ...
Page 190: ...170 Options List Figure C 20 Option 29 Connector Signal Locations ...
Page 246: ...226 Options List ...