JETI model s.r.o.


Update procedure JETI EX receivers (Rx and REX) by JETI Studio.

All receiver updates are performed automatically by JETI Studio. All users have a very fast and easy way to update their receiver to the latest version of FW with all the new features.


The complete procedure is shown in the video below.


Bind the primary and secondary receivers with the DC/DS transmitter in Double Path mode (or set the backup receiver to CLONE mode). All REX receivers are equipped with fully adjustable inputs E1 and E2. Select for one of these inputs in the settings  EX Bus input/backup (min. irmware version REX 1.13 and REX Assist 1.12). In the main receiver you can set Fail-Safe for servos (we recommend at least set up for throttle - cut off). In the backup receiver please disable Fail-Safe function and set up the output to EX Bus mode.
At the Rsat2 satellite receivers the EX Bus signal is generated at the Ext. output and the REX or Rsat900 receivers are equipped with fully adjustable E1 and E2 outputs.


Connection of REX receiver and Rsat2 backup receiver. 












Connection of REX receiver and 900MHz backup receiver.



Calibration of the consumed volume is possible from FW version 2.03.We recommend that you first check SW version in the MFlow2 EX sensor. If will be necessary, update the sensor via the JETI Studio program.


It is also necessary to have the actual device profile (MFlow2.bin) in the "Devices" folder on the transmitter's SD card. Actual device profile can be downloaded during the MFlow2 EX sensor update, or you can update your transmitter via the JETI Studio program. The file (MFlow2.bin) will be automatically updated on the transmitter's SD card.




Calibration procedure (as example): Leave the "calibration" in the default setting (1,000) and make the first test flight (or run a pumping test with the correct type of fuel). In our example the sensor in the default setting measured the consumed volume of fuel 1159 ml. After a test flight (or pumping test) we measure the exact volume of fuel consumed from the tank, for example, by pouring the rest of the fuel from the tank into the calibration cylinder. In this way, we can exactly determine “real consumed volume” from tank. Then in the calibration menu fill in this exact volume in the item "real consumed volume" (980 ml). The flow coefficient is automatically set to the exact value (0.845). You can reset the calibration at any time and select another (more accurate) value to suit.