S321 User Guide Appendix B-Troubleshooting Page B2
Appendix B: Troubleshooting
Table B-1 provides troubleshooting tips for the S321.
Table B-1: Troubleshooting
Issue Possible Resolution
Receiver fails to power
•
External power is low
•
Check charge on external battery and the fuse on the power cable, if applicable
•
Internal power: Check charge on internal battery
•
Check all power cables and pins
•
Try other batteries or cables
•
Make sure to hold the power button down for a minimum of one full second to
power on
•
Ensure the battery is installed with contacts pointed in the correct direction
No data logged
1.
No communication
2.
No valid data
•
Check receiver power status
•
Verify that it is locked to 4 or more GPS satellites
•
Check integrity and connectivity of power and data cable connections
•
Verify that the baud rate settings match in external device mode
•
If trying to connect over Bluetooth, ensure Bluetooth module is powered ON and
device is paired prior to opening the port
Random data from
WebUI or S321 Direct
Link mode
•
Verify the messages selected in the output messages in the WebUI match
what you desire.
•
Verify the baud rate settings match
•
Potentially, the volume of data requested to be output could be higher than the
current baud rate supports. Try using a higher baud rate for communications.
S321 will not go
RTK Fixed
•
If the S321 is “RTK Float”, then it is receiving RTK or Atlas corrections.
•
If the RTK latency is between 10-15 seconds, these are most likely Atlas
corrections.
•
If the RTK latency is less than 10-15 seconds, the S321 is receiving RTK, but
probably will not Fix because of the environment.
•
If the S321 will not go RTK Float or RTK Fixed, check to ensure the base station is
operating.
•
Verify the settings of the UHF radio at the base and at the rover are the same.
•
If using a network, check the Cellular Signal Quality (CSQ) under the Information tab
for cellular reception. CSQ can also be viewed on the S321 display screen by pressing
the FN button.
•
If using the internal UHF radio, ensure a valid 400MHz UHF antenna is plugged into
the SMA connector labeled UHF.
•
If using the Internal GSM modem, ensure that the cellular antenna is screwed into the
SMA connector labeled UMTS.
WARNING: The connectors are identical, always check to ensure the correct
antenna is screwed into the correct slot.
•
If using Bluetooth, ensure RTK is reaching the data collector (check the data
collector internet or data collector radio).
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