Ag Leader GPS 2500/2500B Operators Manual - Manual (Page 23)

17
GPS 2500/2500B S
MART
A
NTENNA
O
PERATING
THE
B
AS
E
S
TA
T
IO
N
• Anything below 2 generally indicates the cabling and antenna are installed correctly.
• If the value is above 2, check that the cable and antenna are securely installed and that there is no visible
damage.
The VSWR reading is updated approximately every 30 seconds.
C
HECKING
RSSI
Received signal strength indicator (RSSI) is a status update of the strength of
the signal received at the rover, and can be read on the rover’s menu interface.
• The higher the number the better (for example, -90 is better than -100).
• Typically, an RSSI of -100 and better is acceptable for reliably receiving RTK
messages from the base station.
• If the value is below -100, steps should be taken to improve signal strength. The best way to do this is to
raise the height of the base station antenna.
O
PERATING THE
2500
Q
UICK
S
TART
Initial startup may take from 5 to 15 minutes, depending on your geographic location.
For example, it may take up to 5 minutes to receive a full ionospheric map from SBAS to ensure
optimum accuracy.
1. Verify the 2500 and all connected systems are powered on. When you turn the switch on the
power cable to the “ON” position the red LED illuminates (indicating power). See “LED Indicators”
on page 7 for more information on the 2500 LED indicators.
2. Enter a receiver authorization code (optional).
3. Configure GPS options.
4. Activate L-band service (optional).
5. Wait for the 2500 to converge on a differential signal. A green LED indicates DGPS. You are
ready to begin using your 2500.
O
PERATING THE
GPS 2500B
Initial setup may take from 5 to 15 minutes.
Complete the following steps to begin using the base station:
1. Plan the base station location. The GPS 2500B base station automatically uses its current location as
the reference point. Place the base station in a location:
NOTE
It takes 3 - 5 minutes for the base station to achieve RTK lock in an unknown location. It typically takes the base
station less than 60 seconds to achieve RTK lock in a known location.