1. Base does no transmit the difference data
Judgment: Under UHF mode, differential lamp (middle lamp) does not flash (The red lamp flashes
regularly under the normal condition). There is no public satellite displayed on the software screen
and the solution state is single point. Under the network mode, the middle differential lamp does not
flash as yellow green. (Namely, the green lamp is on constantly and yellow flashes regularly.).
Solutions:
1) Inspection of hardware and setting (Premise: The environment where the receiver is located is in
a good condition without serious barrier, severe electromagnetic interference, etc. and the parameter
of handheld controller is set correctly);
2) Mode of transceiver (The following mentioned transceiver shall be used under the supporting
mode: Domestic-domestic, import-import, and their frequency band shall be consistent.);
A. Confirm whether the rover is equipped with internal transceiver receiving antenna;
B. Confirm whether the rover is within signal cover of transceiver in the base (Generally, the cover
range of external transceiver is within 20km and that of internal transceiver is within 5km. And
specific circumstance can be determined according to actual region and landform.)
C. Confirm whether the channel and Baud rate set by rover is in conformity with that by base;
D. Confirm whether the contact between internal transceiver module and receiver is in a good
condition;
E. Confirm whether the function of internal transceiver is in normal condition;
3) Network model
Confirm whether the receiver is connected with the network. If connected with the network, the
receiver can make ding-dong sound once (the receiver with voice), at the same time, the differential
signal lamp can be green constantly; Otherwise, please check whether the SIM card is in normal
condition (whether the phone can connect with network normally when the SIM card is inserted into
the phone), whether it is inserted into the card slot of receiver or handheld controller (handheld
controller difference) correctly, and whether the external GPRS antenna is installed (Minicomputer);
B. Confirm whether the receiver logins in the server normally, if it logins in the server, the receiver
can make ding-dong sound once again and broadcasts "connecting successfully", otherwise, please
call query staff for confirming whether the server is running normally;
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Trouble shooting
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