Help With Westerboer VW 921 Needed

Is there anyone out there who is intimately familiar with a VW 921 flight
computer? If willing, would you please contact me directly? I am trying to get
a CAI Model 20 GPS to communicate to a VW 921, but have been unsuccessful. I
have had someone double-check the cable for correct design and continuity. All
appears well with the cable. The GPS also seems to be working properly.

The VW 921 was returned to the factory this past summer for software and
hardware upgrades, and was pronounced to be in good working order.

I am hopeful that there is some little trick or setting I am not aware of. I
have also contacted the Westerboer factory. They suggested a couple of things,
but nothing helped. I want to be certain that the problem is in the 921 before
I send it back to Germany.

I also was wondering where I could find the pin-out specs on the DB9 connector
on the Model 20? Is that listed on a website somewhere?

Thanks in advance for any help (useful help appreciated even more).

Chuck

Chuck

Generally the GPS NAV needs to be initialized with the software if
you are using the serial port (at least with WinPilot) to get the NMEA
output. If you connect via the phone plug for the NEMA DATA it will
probably work for you.

Richard
www.craggyaero.com


(ChuckPilot) wrote in message ...
Is there anyone out there who is intimately familiar with a VW 921 flight
computer? If willing, would you please contact me directly? I am trying to get
a CAI Model 20 GPS to communicate to a VW 921, but have been unsuccessful. I
have had someone double-check the cable for correct design and continuity. All
appears well with the cable. The GPS also seems to be working properly.

The VW 921 was returned to the factory this past summer for software and
hardware upgrades, and was pronounced to be in good working order.

I am hopeful that there is some little trick or setting I am not aware of. I
have also contacted the Westerboer factory. They suggested a couple of things,
but nothing helped. I want to be certain that the problem is in the 921 before
I send it back to Germany.

I also was wondering where I could find the pin-out specs on the DB9 connector
on the Model 20? Is that listed on a website somewhere?

Thanks in advance for any help (useful help appreciated even more).

Chuck

Chuck,
Just a shot in the dark, but when the Cambridge model
20 is used to drive the Borgelt B-100, the red and
yellow leads in the NMEA cable (phone cable) must be
reversed. You might want to give it a try.
JJ

One more tid-bit, If you're using a Cambridge NMEA
cable, the white lead at the GPS box is on the RIGHT,
but when this same cable goes into the computer, the
white lead is on the LEFT. In other words, you must
use the correct end of the cable on the Model 20 end.
A standard phone cable may not work.
:) JJ

At 23:00 10 October 2004, John Sinclair wrote:
Chuck,
Just a shot in the dark, but when the Cambridge model
20 is used to drive the Borgelt B-100, the red and
yellow leads in the NMEA cable (phone cable) must be
reversed. You might want to give it a try.
JJ