** Digitech Central Telemetric Unit for Jeti **
#151
My Feedback: (20)
I got the CTU installed and downloaded the updates following the install-readmefirst! text. All the files are in the proper folders and the CTU took the firmware.sfw file from the SD card so I assume it took the update. I cant find anyway to verify the CTU version. Everything is displayed in the Device Explorer and all parameters are available to select in Displayed Telemetry.
The problem I had was getting the Lua screen to display. After a couple of hours of frustration I re-read post #140 above and finally figured out you have to go to Applications and activate the Lua program. Then you have to select the Lua in Displayed Telemetry menu. I would recommend adding an additional instruction in the intall-readmefirst! with this information about how to display the Lua screen. It would really help us Jeti and computer dummies.
The CTU seems to be working well on the bench. I will customize the selections next and then test. It looks really good, a very high quality telemetry addition.
Thanks,
Gary
The problem I had was getting the Lua screen to display. After a couple of hours of frustration I re-read post #140 above and finally figured out you have to go to Applications and activate the Lua program. Then you have to select the Lua in Displayed Telemetry menu. I would recommend adding an additional instruction in the intall-readmefirst! with this information about how to display the Lua screen. It would really help us Jeti and computer dummies.
The CTU seems to be working well on the bench. I will customize the selections next and then test. It looks really good, a very high quality telemetry addition.
Thanks,
Gary
#152
Gary,
if you go into "DeviceExplorer" and selects the CTU, you can press the "tools" button (screwdriver and wrench ).
Doing so, you can see the current version of the CTU firmware (in my case its 0.92)
PS: Thanks for the nice words on the CTU . I'm sure Sandor sees your message and will have a look on the LUA installation instructions
if you go into "DeviceExplorer" and selects the CTU, you can press the "tools" button (screwdriver and wrench ).
Doing so, you can see the current version of the CTU firmware (in my case its 0.92)
PS: Thanks for the nice words on the CTU . I'm sure Sandor sees your message and will have a look on the LUA installation instructions
#153
My Feedback: (14)
Tried to edit the original post but RCU won't let me .. maybe too long since posting.
Dave
#154
My Feedback: (20)
I checked the update in the CTU and it says 0.91 so it took the update. Thanks for the help finding the update confirmation. All is ready for fuel measurements and calibration run. I started installing the Jeti radio system in my Avanti XXL with K-210/Xicoy ECU today. I will do the fuel measurements and calibration runs on both airplanes when the weather gets better here.
Thanks for the help,
Gary
Thanks for the help,
Gary
#155
My Feedback: (20)
I did the fuel calibration runs today on both Avanti XXL with K-210 G2 and Sabre XLT with K-210 Xicoy. Weather here was perfect. I filled and then de-fueled the tanks one liter at a time and marked the tanks. Both tanks were 4.5 liters.
I did the turbine runs and reset the fuel quantity at 1 liter. Then after the 2nd liter run the turbine was shut down and adjusted the fuel factor. I did another run on each jet and checked the fuel calculation and it was pretty close with only slight adjustment needed. I hope to fly both soon and get an operational look at the calculation. Overall I'm really impressed with the CTU and the data provided.
The only glitch I had was on the Avanti XXL with K-210 Xicoy ECU. The CTU kept going off line and then would restart during the runs. The red and blue lights never went off and other items in the Device Explorer never went off. The antennas and Qs were 100%. I rechecked all connections but all seemed good. The turbine continued to run with no issues. I'm not sure it had any effect on the fuel calculations or not.
Any idea why the CTU would keep dropping off and then come back on? What should I check?
Thanks,
Gary
I did the turbine runs and reset the fuel quantity at 1 liter. Then after the 2nd liter run the turbine was shut down and adjusted the fuel factor. I did another run on each jet and checked the fuel calculation and it was pretty close with only slight adjustment needed. I hope to fly both soon and get an operational look at the calculation. Overall I'm really impressed with the CTU and the data provided.
The only glitch I had was on the Avanti XXL with K-210 Xicoy ECU. The CTU kept going off line and then would restart during the runs. The red and blue lights never went off and other items in the Device Explorer never went off. The antennas and Qs were 100%. I rechecked all connections but all seemed good. The turbine continued to run with no issues. I'm not sure it had any effect on the fuel calculations or not.
Any idea why the CTU would keep dropping off and then come back on? What should I check?
Thanks,
Gary
#156
Join Date: Nov 2014
Posts: 106
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so this unit does engine parameters, fuel consumption, altimeter and airspeed with g load all in one? compared to runing seperate fuel sensor, temps sensors, airspeed sensors this unit does it all in real time directly on a jeti ds24 screen?
#157
Thread Starter
My Feedback: (10)
I did the fuel calibration runs today on both Avanti XXL with K-210 G2 and Sabre XLT with K-210 Xicoy. Weather here was perfect. I filled and then de-fueled the tanks one liter at a time and marked the tanks. Both tanks were 4.5 liters.
I did the turbine runs and reset the fuel quantity at 1 liter. Then after the 2nd liter run the turbine was shut down and adjusted the fuel factor. I did another run on each jet and checked the fuel calculation and it was pretty close with only slight adjustment needed. I hope to fly both soon and get an operational look at the calculation. Overall I'm really impressed with the CTU and the data provided.
The only glitch I had was on the Avanti XXL with K-210 Xicoy ECU. The CTU kept going off line and then would restart during the runs. The red and blue lights never went off and other items in the Device Explorer never went off. The antennas and Qs were 100%. I rechecked all connections but all seemed good. The turbine continued to run with no issues. I'm not sure it had any effect on the fuel calculations or not.
Any idea why the CTU would keep dropping off and then come back on? What should I check?
Thanks,
Gary
I did the turbine runs and reset the fuel quantity at 1 liter. Then after the 2nd liter run the turbine was shut down and adjusted the fuel factor. I did another run on each jet and checked the fuel calculation and it was pretty close with only slight adjustment needed. I hope to fly both soon and get an operational look at the calculation. Overall I'm really impressed with the CTU and the data provided.
The only glitch I had was on the Avanti XXL with K-210 Xicoy ECU. The CTU kept going off line and then would restart during the runs. The red and blue lights never went off and other items in the Device Explorer never went off. The antennas and Qs were 100%. I rechecked all connections but all seemed good. The turbine continued to run with no issues. I'm not sure it had any effect on the fuel calculations or not.
Any idea why the CTU would keep dropping off and then come back on? What should I check?
Thanks,
Gary
i think what you are suffering from is loss of telemetric signal.
the Reverse signal from a receiver is only about 10% in strength from its TX signal.
i have the same sometimes , it does NOT influence the ctu calculations.
we had the same long time ago with drones , when we went above say 1000ft of flight it would lose the telemetric signal.
dont worry all fine.
#159
The Digitech IAS can be plugged into one of the two EX Bus ports on the CTU.
https://www.aeropanda.com/products/sb-ias-speed-sensor
Danny
https://www.aeropanda.com/products/sb-ias-speed-sensor
Danny
#160
i think what you are suffering from is loss of telemetric signal.
the Reverse signal from a receiver is only about 10% in strength from its TX signal.
i have the same sometimes , it does NOT influence the ctu calculations.
we had the same long time ago with drones , when we went above say 1000ft of flight it would lose the telemetric signal.
dont worry all fine.
the Reverse signal from a receiver is only about 10% in strength from its TX signal.
i have the same sometimes , it does NOT influence the ctu calculations.
we had the same long time ago with drones , when we went above say 1000ft of flight it would lose the telemetric signal.
dont worry all fine.
In Gary’s case he was at close range. Gary, please check that you have the latest FW on your receivers and Central Boxes.
Danny
#164
My Feedback: (20)
I updated every thing including the CTU prior to the install. I was sitting in front of the jet holding it when doing the calibration runs so transmitter was very close. I did have the GSU plugged in using a Y from the ECU during the runs. Not sure if that would make a difference. The telemetry drops were with the K-210 and Xicoy ECU. The K-210 G2 did not drop out during the test runs. Any suggestions?
Thanks,
Gary
#165
My Feedback: (20)
For anyone who is interested this is how I calibrated my fuel tanks.
I first filled up the tank and then pumped out one liter at at time using a graduated plastic container. After each liter was pumped out I marked the level in the tank. After the container had 2 liters in it I poured it back into the fuel jug and repeated until all the fuel was removed from the tank.
I then did the calibration test runs on the turbine like the CTU instructions specify. It was really not a difficult process. I'm looking forward to test flying both CTUs and refining the fuel factor.
Gary
I first filled up the tank and then pumped out one liter at at time using a graduated plastic container. After each liter was pumped out I marked the level in the tank. After the container had 2 liters in it I poured it back into the fuel jug and repeated until all the fuel was removed from the tank.
I then did the calibration test runs on the turbine like the CTU instructions specify. It was really not a difficult process. I'm looking forward to test flying both CTUs and refining the fuel factor.
Gary
#169
My Feedback: (19)
One thing I've started doing that is much easier than all the measuring is I have a single Jeti Mflow. I put it in a new plane and use it for fuel telemetry with the engine telemetry as fuel back up. Within a few flights I can get the pump factor dialed in and take the mflow out and put it in the next plane for calibration.
#170
One thing I've started doing that is much easier than all the measuring is I have a single Jeti Mflow. I put it in a new plane and use it for fuel telemetry with the engine telemetry as fuel back up. Within a few flights I can get the pump factor dialed in and take the mflow out and put it in the next plane for calibration.
(I would guess that the MFlow is not absolutely precise if moving from plane to plane with calibrating it "in the plane" ?)
#171
My Feedback: (19)
Jeti Telemetry Sensor Fuel Flow MFlow2 Turbine T800 EX
#172
The mflow does not need callibration. It is an actual flow meter. It is supposed to be accurate to 2%. You set the tank size and it will give you percent or you can just measure the amount of fuel has gone through it. You can even hook it up and turn the radio on and it run it in line of your fueler to measure how much fuel goes in to the plane. It has shown to be very accurate and really like it but don't want to buy one for each plane being that I am running either the Kingtech Telemetry or the CTU anyway and it isn't cheap.
Jeti Telemetry Sensor Fuel Flow MFlow2 Turbine T800 EX
Jeti Telemetry Sensor Fuel Flow MFlow2 Turbine T800 EX
Anyway, good way of doing it!