96
Startup and Basic Operation
10.2.5
IRIG-B Time Data
IRIG-B time is immediately sent out, when the clock is powered ON, from any timing output
port configured for IRIG-B as indicated above. Time will not be accurate until the Unlocked LED
extinguishes.
10.3
Clock Status Display Modes & Fault Table
When first applying power to the clock, the display will indicate several startup messages, then
will revert to Clock Status mode condition called STARTUP. After a short time, while the GPS
receiver begins collecting data from the GPS, it will indicate either UNLOCKED (XX Min), NOT
STABILIZED, LOCKED–AUTO SURVEY, or LOCKED–POSITION HOLD. There are several
faults that are indicated, if they exist, and are as follows:
Bit
Weight
Function
0
1
OCXO Not Installed (set to 1)
1
2
Stabilized (fault = 0)
2
4
Power Supply Error
3
8
IRIG BUS Fault (was Opt. 18)
4
16
Out of Lock
5
32
Time Error
6
64
VCXO Error (out of bounds)
7
128
Receiver Failure
Table 10.1: Fault Conditions
For additional information on internal faults, please see Chapter 2, Front and Rear Panels, and
Chapter 9, Serial Communications and Command Set, status commands, page 72.
10.4
Time Display Modes
After establishing GPS satellite synchronization, date and time information can be displayed on
the front panel by pressing the TIME key and scrolling through the four available displays. Press
this key to select the time display mode (UTC or Local) time data (Date/Time or Day of Year).
10.4.1
Date and Time Display, Universal Time Coordinated (UTC)
The Date and Time Display UTC mode displays UTC, in the Date and Time format, as maintained
by the United States Naval Observatory (USNO), as described below:
UTC DATE/TIME www
dd mmm yyyy hh:mm:ss
Where:
Содержание 1088A
Страница 4: ...iv ...
Страница 6: ...vi ...
Страница 18: ...xviii LIST OF FIGURES ...
Страница 23: ...1 4 Attaching Rack Mount Ears to 1088A B Series Clocks 3 Figure 1 2 Attaching Rack Mount Ears ...
Страница 24: ...4 Unpacking the Clock ...
Страница 32: ...12 Front and Rear Panels ...
Страница 38: ...18 Connecting Inlet Power Input and Output Signals ...
Страница 41: ...4 1 GPS Antenna Installation 21 Figure 4 2 Antenna Mounting Bracket Figure 4 3 Antenna Mounting with AS0044600 ...
Страница 46: ...26 GPS Antenna and Cable Information ...
Страница 48: ...28 Setting Internal Jumpers Figure 5 1 Model 1088B Main Board ...
Страница 76: ...56 The Setup Menus ...
Страница 112: ...92 Serial Communication and Command Set ...
Страница 127: ...B 4 Physical Dimensions 107 Figure B 1 Suggested Mounting of the AS0094500 Surge Arrester ...
Страница 128: ...108 Using Surge Arresters ...
Страница 137: ...C 5 Option 04 Parallel BCD Output 117 C 5 2 Option 04 Firmware Setup Figure C 2 Option 04 Firmware Setup ...
Страница 145: ...C 5 Option 04 Parallel BCD Output 125 Figure C 4 Option 04 Output Jumper Settings ...
Страница 146: ...126 Options List Figure C 5 Option 04 Board Layout and Jumper Locations ...
Страница 165: ...C 12 Option 17 Parallel BCD Output and Second RS 232 Port 145 Figure C 11 Option 17 Output Jumper Settings ...
Страница 166: ...146 Options List Figure C 12 Option 17 Board Layout and Jumper Locations ...
Страница 176: ...156 Options List C 14 5 Typical Network Configuration Figure C 15 Option 18 Network Configuration ...
Страница 187: ...C 16 Option 20A Four Fiber Optic Outputs 167 Figure C 22 Option 20A Jumper Locations ...
Страница 194: ...174 Options List Figure C 24 Option 23 Internal Jumper Setup ...
Страница 196: ...176 Options List Figure C 25 Option 27 Jumper Locations ...
Страница 214: ...194 Options List Figure C 28 Option 29 Connector Signal Locations ...
Страница 270: ...250 Options List ...