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Razor bad CDI data
Posted: Thu Apr 04, 2024 6:38 pm
by Mike_Tailwind
I'm having problems driving the CDI display on a GRT EFIS from the Razor and N16. The CDI display seems reasonable on the Razor, but jumps around and comes and goes on the EFIS. I've placed a serial monitor on the output of the Razor and have verified that the Razor is outputting bad SL30 CDI messages. There are invalid characters in the CDI deflection field. VOR radial data messages seem OK. I have tried two Razors both with version 090322 firmware release: V1 REL 6 and both exhibit the same problem. Has anyone else seen this problem? I should note that on the latest flight the problem seemed to clear up, which is strange for what appears to be a Razor firmware issue. I'm thinking it may be an initial pointer or buffer overflow issue that clears up after several hours? But, it doesn't give me confidence that it won't re-appear.
Re: Razor bad CDI data
Posted: Sat Apr 05, 2025 8:39 pm
by tweetr
Mike_Tailwind wrote: ↑Thu Apr 04, 2024 6:38 pm
I'm having problems driving the CDI display on a GRT EFIS from the Razor and N16. The CDI display seems reasonable on the Razor, but jumps around and comes and goes on the EFIS. I've placed a serial monitor on the output of the Razor and have verified that the Razor is outputting bad SL30 CDI messages. There are invalid characters in the CDI deflection field. VOR radial data messages seem OK. I have tried two Razors both with version 090322 firmware release: V1 REL 6 and both exhibit the same problem. Has anyone else seen this problem? I should note that on the latest flight the problem seemed to clear up, which is strange for what appears to be a Razor firmware issue. I'm thinking it may be an initial pointer or buffer overflow issue that clears up after several hours? But, it doesn't give me confidence that it won't re-appear.
I'm having the same problem in my RV-10 with Razor/V16/M16 communicating with my dual GRT Horizon 10.1 EFIS with SL-30 emulation. Please release a Razor firmware update to correct the SL-30 data output. Thanks!