Pendulum GPS-12, Руководство пользователя

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•
Manual Hold-over
•
Disciplined by GNSS
•
Disciplined by Ext. Ref.
*
The normal end message after the transitory
start-up phase, which usually lasts less than 20
minutes, is
Disciplined by GNSS . Then we as-
sume that the antenna installation has been per-
formed according to given instructions. If Op-
tion 79/01 is installed, and the instrument is dis-
ciplined by an external 1 pps reference source,
then the message is
Disciplined by Ext. Ref .
Oscillator Menu
By pressing
u
you will enter the Osc submenu,
indicated by the corresponding label at the top
left corner:
n
Mode
Here you can change the operational mode of
the oscillator. If you want to return to the de-
fault menu, press
t
. By pressing
ENTER
or
u
you will be able to select the mode. Use
p
or
q
, and confirm your choice by returning to the
previous screen. Press
t
.
n
1 pps Offset
(GPS12R/HS &
GPS-12RG
Here you can set the time offset of the 1 pps
output signal that is available on the front
panel. The range is ±999 ns.
GNSS Menu
Moving the cursor to GNSS in the default menu
will bring you to the GNSS submenu after
pressing
ENTER
or
u
.
Here you can see your current position and how
many satellites that you are locked to. You can
also adjust the antenna delay. The GPS-12RG
has three operational modes. See the screen be-
low that appears when you enter the
Mode
menu. Select the mode that gives the best per-
formance at your location.
If you want to see a list of all locked satellites
and their status you should move the cursor to
Locked to and then press ENTER or
u
. The
menu below will be activated.
n
Antenna Delay
(not GPS-12RG)
In order to compensate for the signal delay in-
troduced by the antenna and its connecting ca-
ble, the 1 pps reference signal from the GPS re-
3-5 User Interface
Using the Controls
*
Available only if Option 79/01 is installed.