28
Clock Startup and Utility Software
000:00:00:01
000:00:00:02
000:00:00:03
.
.
.
265:13:45:21
265:13:45:22
(these values chosen for illustrative purposes only)
During a short period of time (from a few minutes to a few seconds) the displayed clock time may
jump and add or lose some seconds as more satellites are acquired. This is normal, until the full
set of ephemeris data is received by the GPS receiver from the GPS (satellites), at which the time
the clock will be accurate. After running for a few minutes, the Stabilized LED will glow steadily,
and the Out-of-Lock relay should close.
6.2
Front Panel Indication
6.2.1
LCD Display Indication at Startup
In the startup sequence, the LCD display should indicate similar to the messages shown below.
ARBITER SYSTEMS GPS
SUBSTATION CLOCK
followed by:
COPYRIGHT (C) 2009
ARBITER SYSTEMS, INC.
followed by:
CLOCK STATUS
STARTUP
followed by:
CLOCK STATUS
UNLOCKED 01 MIN
After this, the second line of the status display should change to UNLOCKED, or LOCKED
depending on the previous operation, inactivity or if the clock has been moved. During startup,
the UNLOCKED LED could turn OFF and ON. After a few minutes the STABILIZED LED should
change from OFF to ON.
6.2.2
Other Display Indications When Unlocked
Time Display
TIME NOT AVAILABLE
Position Display
POSITION
NOT AVAILABLE
Event Display
PLEASE WAIT!
TIME ADJUSTMENTS
