BUDS for 912iSc

After you install the BUDS software, you will find a 'docs' subfolder within the installation folder. Inside that docs folder is a help file (.html), which should answer all of your questions...

1. Shall we connect EMU and B.U.D.S system together with ECU hardware in Testbed environment at the same time and run the engine? Please confirm

yes you can

 2. Does the B.U.D.S system provide the Live data monitoring capability of Engine parameters when the engine is running? Please confirm, so that we want to observe the EMU display & B.U.D.S at the same time simultaneously. Is it allowed? Or

yes you can - use the "Diagnostic Mode" Main Guages tab in BUDS to observe data in realtime

 3. Should the B.U.D.S system be used only for post-flight engine data log extraction/analysis?

that is a primary function but not the only one

4. Does any special approval/qualification required from any respective Aviation Authority to integrate and operate/run the B.U.D.S system with the engine on the ground?

We cannot speculate on the requirements of your local aviation authority, you should consult them directly.

Thanks. Few more queries:

1. Shall we use two core shielded twisted pair cable for maintenance port CAN channel as similar as the display port interface? Please confirm.

2. “It is not recommended to connect maintenance and diagnostics interfaces LANE A and LANE B together”. What does this mean? Please clarify. Does it mean that we should connect BUDS hardware either to HIC A or HIC B one at a time (without Y-cable shown in attached image) or shall we use Y-cable connection to connect both HIC A/B  as shown? Please advice.

3. BUDS harness interface diagram/scheme is shown below. Please review for any correctness. Suggest the usage of a Y-cable connection. When to use, and when not to use this cable? 

Note: We feel a ground connection is not required to connect since its differential signal. Please correct me if am wrong, so we will go with two core shielded twisted pair cables. 

4. We assume aircraft manufacturer should make the harness from HIC A/B mating connectors to D-SUB DE9 Connectors and Y-Cable assembly (if required), since they are NOT supplied part of BUDS hardware. Please comment.

Ramanathan SG wrote:

Thanks. Few more queries:

1. Shall we use two core shielded twisted pair cable for maintenance port CAN channel as similar as the display port interface? Please confirm.

2. “It is not recommended to connect maintenance and diagnostics interfaces LANE A and LANE B together”. What does this mean? Please clarify. Does it mean that we should connect BUDS hardware either to HIC A or HIC B one at a time (without Y-cable shown in attached image) or shall we use Y-cable connection to connect both HIC A/B  as shown? Please advice.

3. BUDS harness interface diagram/scheme is shown below. Please review for any correctness. Suggest the usage of a Y-cable connection. When to use, and when not to use this cable? 

Note: We feel a ground connection is not required to connect since its differential signal. Please correct me if am wrong, so we will go with two core shielded twisted pair cables. 

4. We assume aircraft manufacturer should make the harness from HIC A/B mating connectors to D-SUB DE9 Connectors and Y-Cable assembly (if required), since they are NOT supplied part of BUDS hardware. Please comment.

Please refer to the 912iS installation manual, it covers all of these questions and should be reviewed carefully before any 912iS installation...

https://www.rotax-owner.com/en/support-topmenu/engine-manuals#912-i-series-engines

PS: consulting a certified iRMT technician is a recommended best practice for any ROTAX installation, please see https://dealerlocator.flyrotax.com/  and also https://rotaxirmt.com/locator 

Yes got it, i must go for twisted pair cable.

For Point 2: Can you clarify in a better way,tht statement found in the Installation manual only.

Do i need Y cable or should i go and connect BUDS to either HIC A or B one at a time. Please clarify.

Ramanathan SG wrote:

Yes got it, i must go for twisted pair cable.

For Point 2: Can you clarify in a better way,tht statement found in the Installation manual only.

Do i need Y cable or should i go and connect BUDS to either HIC A or B one at a time. Please clarify.

For an installation utilizing twin DB-9 serial ports, using the Y-cable is necessary in order for BUDS to read the data from both A&B at the same time. 

See the videos

https://www.rotax-owner.com/en/videos-topmenu/expanded-video-instructions/434-912is-ecu-flash-1 
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https://www.rotax-owner.com/en/videos-topmenu/elearning-videos/460 
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