Polaris RiderX PIDD Owner's Manual page 84

GPS antenna not communicated with display (DOP
window greyed out)
The HDOP, VDOP, and TDOP fields are greyed out and
there is no position data.
1. The antenna is either not powered, defective, or there
is a CAN communication link wiring issue. Check
pinout on antenna connector.
No satellite reception (DOP values are all zeros)
CAN communication link between antenna and display is
functional, but antenna has not yet acquired satellites.
1. There will be no speed indication on the display. This
is normal during the first 30 to 90 seconds after power
up if the GPS has been off for several days.
2. If the antenna has been off for a few hours the signal
should be acquired in a few seconds. If satellites are
not acquired after several minutes, check for clear
view of the sky or interfering electrical devices near
the antenna.
3. If these are ok, antenna is possibly defective.
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