Symmetricom ET6000 User Manual

TABLE OF CONTENTS
4.35 50/60HZ SELECTION .....................................................................................................4-18
4.36 ENTER 50/60HZ OFFSET DATA................................................................................... 4-18
4.37 REQUEST 50/60HZ MEASUREMENT DATA...............................................................4-19
4.38 PRINTER – SET-UP CONFIGURATION.......................................................................4-19
4.39 PRINTER – REQUEST CONFIGURATION..................................................................4-20
4.40 PRINTER PORT MODE SELECTION........................................................................... 4-20
4.41 PRINTER – SELECT OUTPUT RATE...........................................................................4-21
4.42 PRINTER – REQUEST OUTPUT RATE........................................................................ 4-21
4.43 ENABLE/DISABLE & DATA SELECT......................................................................... 4-21
4.44 ENTER PRESET COINCIDENCE TIME ....................................................................... 4-23
4.45 REQUEST MUX OUTPUT .............................................................................................4-24
4.46 SET MUX OUTPUT ........................................................................................................4-25
4.47 SET MAJOR TIME – TOD (TIME OF DAY)................................................................. 4-25
4.48 SET YEAR........................................................................................................................ 4-25
4.49 AUTOMATIC DAYLIGHT SAVINGS TIME................................................................ 4-26
4.49.1 DISABLE AUTO DAYLIGHT SAVINGS TIME FUNCTION....................... 4-26
4.49.2 ENABLE AUTO DAYLIGHT SAVINGS TIME FUNCTION........................ 4-26
4.49.3 SET AUTO DAYLIGHT SAVINGS TIME DEFAULT INTERVAL .............4-26
4.49.4 REQUEST AUTO DAYLIGHT SAVINGS TIME INTERVAL...................... 4-27
4.49.5 SET AUTO DAYLIGHT SAVINGS TIME INTERVAL.................................4-27
4.50 REQUEST UNIT SERIAL NUMBER............................................................................. 4-28
CHAPTER FIVE
MAINTENANCE/TROUBLESHOOTING
5.0 MAINTENANCE ................................................................................................................. 5-1
5.1 ADJUSTMENTS.................................................................................................................. 5-1
5.1.1 INTERNAL OSCILLATOR CALIBRATION......................................................5-1
5.1.2 LCD ADJUSTMENT ............................................................................................5-3
5.1.3 AC CODE ADJUSTMENTS................................................................................. 5-3
5.1.4 10MHZ SINE WAVE............................................................................................5-3
5.1.5 10MHZ SQUARE WAVE..................................................................................... 5-3
5.2 TROUBLESHOOTING........................................................................................................ 5-4
5.2.1 GENERAL.............................................................................................................5-4
5.2.2 POWER LED WILL NOT ILLUMINATE WHEN ON/OFF SWITCH IS
ACTIVATED........................................................................................................ 5-4
5.2.3 TRACKING LED DOES NOT ILLUMINATE....................................................5-4
5.2.4 LOCKED LED DOES NOT ILLUMINATE ........................................................5-5
5.2.5 UNIT DOES NOT TRACK SATELLITES, ERROR MESSAGE/CODE –
ANTENNA UNDERCURRENT .......................................................................... 5-5
5.2.6 COLD RESET .......................................................................................................5-5
5.3 THEORY OF OPERATION.................................................................................................5-6
5.3.1 GPS SYSTEM OPERATION................................................................................ 5-6
ET6xxx ExacTime GPS TC & FG (Rev C) Symmetricom Inc
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Symmetricom ET6000 Specifications

General

Brand	Symmetricom
Model	ET6000
Category	Receiver
Language	English