OXTS RT-Base User manual

Quick
Installation
Guide
Step 1 – Choose a Suitable Site
Find a site that is in open-sky, with no reflective objects
like trees or buildings. Reflections degrade the quality
of the corrections.
The RT-Base unit should not be left in direct sunlight or
the battery may be damaged.
Step 2 – Connecting RT-Base System
Mount the GPS Antenna on the top of the tripod, or to a
secure pole. The GPS Antenna should not be able to
move even slightly.
Connect the GPS Antenna to the RT-Base unit using the
15m TNC-TNC cable provided.
Connect the RT-Base unit to the Radio Modem Aerial
and mount the aerial at least 2m away from the GPS
Antenna.
Never connect the GPS Antenna to the Radio Aerial
port on the RT-Base unit or it may be damaged.
Step 3 – Turning on the RT-Base
Turn on the RT-Base unit. The display will follow the
sequence below.
If the GPS Antenna is in exactly the same location as
the last saved position then press the Restore/Save but-
ton before the Averaging step is complete.
If the GPS Antenna is in a new location then simply
leave the RT-Base unit to find satellites (2) and average
its position (3).
Once the RT-Base unit is ready the display will show
the Latitude, Longitude and Altitude of the RT-Base
Antenna. To save this location (and use it again next
time) press the Restore/Save button.
The RT-Base will now be transmitting corrections on its
radio link.
RT-Base
GPS
Base
Station

Step 4 – Remote Radio Modem
Connect the Radio Modem Aerial to the Radio Modem.
Connect the appropriate cable to the Radio Modem (for
example the 14C0038A connector J3 for the RT3000).
To make sure that the Radio Modem is receiving correc-
tions from the RT-Base look at the LEDs. The Table
below gives a description for some of the LEDs on the
radio modem.
TD RD CD Description
Off Off Off Idle
Off Off Orange Noise or other user on this
radio frequency
Off Green Green Receiving a packet
The Remote Radio Modem should receive a packet (RD
and CD both green) once per second, with a slightly
longer packet once every 10 seconds.
Step 5 – Charging
The battery in the RT-Base will last more than 10 hours
when fully charged. To recharge the battery connect the
RT-Base unit to a mains supply for at least 2 hours.
RT3000 Connection
The connection of the Radio Modem to the RT3000 is
shown above. Most of the RT3000 User Cables have J3
as the Radio Modem connection; check in the RT3000
manual if you are unsure.
Notes
Copyright Oxford Technical Solutions, 2007
Document Revision: 070319