At 10:48 PM 6/23/2010, Robert Benward wrote...
Has anyone ever put another GPS in a Z3801A? Will the software
accommodate
another GPS that tracks say, 12 channels?
Possibly 8 channels. You must use a Motorola Oncore VP. A 6 channel one
was what HP used. There are mixed reports on using an 8 channel VP -
some say it works fine, others say you must configure it in 6 channel
mode (but you do pick up improved reception). Whether the different
reports are due to changes in configuration or firmware of the z3801a,
the Oncore, or both - I have no idea.
The commands/responses used by the z3801a prevent it from working
directly with newer GPS modules, like the GTs, UTs or M12s (even if you
adapted them physically).
If you want to try and get better performance with a newer GPS
receiver, you should be able to leave the existing board in place, and
bypass the 1PPS input with the signal from the newer receiver. You'd
only get in trouble in exceptional conditions (new receiver loses sync,
but existing one is reporting good satellite lock, etc.). Of course,
the z3801a satellite reporting wouldn't be worth much.
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