Data Analysis
(Menu/Applications/Data Analysis)
Duplex transmitters can store a wide range of operational and telemetry data in their internal memory (Sensors – Data Logging). These data logs can be reviewed and analyzed using the Data Analysis application directly on the transmitter’s screen, or they can be copied to a PC and examined using the JETI Studio application (available for free at www.jetimodel.cz).
JETI Studio allows for a clearer, more comprehensive display on a larger screen and can show more data simultaneously. On the transmitter display, you can view values and graph lines for up to three variables at once. For this reason, we recommend using JETI Studio for detailed analysis at home, and the Data Analysis app on the transmitter for quick review at the field.
Selecting a Log for Analysis:
- After opening the file selection line, the transmitter will display all flight logs sorted by date in the format “year/month/day”.
Tip: Flight logs are always located in the Log directory on the transmitter. Although the transmitter has enough memory for many logs, it’s recommended to delete older, unnecessary files from the Log directory periodically (e.g., once every few seasons).
Tip: Pressing F3 (tool symbol) in the Data Analysis menu allows you to change the units in which the data is displayed.
- Opening the folder for a given flight day displays a list of models flown on that day, sorted by the time each model was powered on.
Tip: The transmitter uses the date and time set in Menu/System/Configuration to organize flight logs. Therefore, it is important to set the correct date and time on new transmitters or after disconnecting the battery.
- After selecting a model, choose up to three parameters to display. The available parameters will automatically adjust depending on which sensors, receivers, etc., are installed in the selected model.
- Pressing F4 (graph icon) will display the selected parameters graphically along a timeline for visual inspection and analysis.
- Use F1 and F2 to move along the time axis. Use F3 and F4 to zoom in or out of the time range in the graph windows. F5 switches between individual graphs in the log.
- Use the transmitter’s rotary dial to move the cursor along the timeline. The measured value of the selected graph is shown at the cursor's position.
- Black triangles may appear at certain points in the log (highlighted in red in the example image “Graph Display”). These indicate alarms and warnings triggered during the flight. Moving the cursor to a triangle will display the cause of the alarm and its configured threshold. For example, if a minimum speed alarm of 40 km/h was set and the model dropped below that speed during flight, the triangle will appear at that point in the log.
Configuration
(Menu/System/Configuration)
This menu is used to configure the basic settings of your transmitter. The values set here apply globally—to the transmitter itself and all models stored in its memory.
Explanation of Selected Options:
- Language – Sets the transmitter’s language. Changing the language automatically updates all interface labels and system sounds to the selected language.
- User Name – Sets the name of the transmitter owner. The name can be displayed on the welcome screen.
- Stick Mode – Sets the transmitter mode (e.g., Mode 1–4). Changing the mode may require you to reassign the stick inputs accordingly.
Tip: Press F3 to view the available stick mode configurations.
Note: The selected mode will only affect new models created after the change.
- Sound Profile – Configures whether the transmitter responds to events with a tone, voice, or both.
Recommended setting: Tone + Voice. - Transmission Frequency – Sets the refresh rate (data transmission speed) of the transmitter.
Recommended setting: 100Hz. - Screenshot Switch – If a switch is assigned to this function, flipping it will save the current transmitter screen as an image file in the root directory of the SD card.
Tip: Do not leave a switch assigned unless you actively use this feature—otherwise, you may unintentionally store a large number of unnecessary screenshots.
- Signal Check Before Flight – If enabled (recommended), the transmitter performs an automatic range check each time a model is powered on.
Note: Make sure the model is several meters away from the transmitter when powering on.
Warning: If a range warning occurs, do not attempt to fly. Identify and fix the problem, then perform a standard range check.
- Vibration Intensity – Sets the vibration strength for the stick gimbals.
- Transmitters DC/DS-16 II and DC/DS-14 II do not support vibration alarms.
- The DS-12 supports one global vibration level.
- Other transmitters allow setting three levels per gimbal independently.
Servo/Range Test
(Menu/System/Servo-Range Test)
Range Test
Activating this function reduces the transmitter's output power to 10% and simultaneously starts an audible safety tone to indicate reduced transmission power.
If the system is functioning correctly—and both the transmitter and receiver are positioned approximately 80 cm above the ground—reliable control should be maintained at a minimum distance of 50 m.
Servo Test
When this function is activated, the selected servos will move between their configured endpoint positions at a preset speed.
Tip: During a range test, it's helpful to also run a servo test. Smooth and uninterrupted servo movement—without manual input—can help verify the signal quality.
View Inputs
(Menu/System/View Inputs)
View Inputs
This menu provides a graphical display of the current positions of the transmitter’s control elements.
Use buttons F2 and F3 to switch between screens displaying different groups of controls.
Calibration
A key function in this menu is the calibration of the transmitter’s controls, which precisely sets their endpoints and center positions.
Start the calibration by pressing F1 (Calib.). A built-in wizard will guide you step by step through the process.
Only the control element that is moved during the calibration session will be recalibrated—any control that remains untouched will keep its current calibration.
The calibration will be saved after the function is deactivated again by pressing F1 (Calib) once more.
System Sound
(Menu/System/System Sound)
Assign sound alerts (voice announcements) to various system events of the transmitter.
Recommended values for selected parameters:
- Low Voltage: 3.3 V
- Weak Signal: 1
- Inactivity Alarm: 5–10 min
Tip: Do not set the “Weak Signal” value higher than 1. Even at 1, there is still roughly 30% signal reserve. Assign clear and concise announcements to each event to best reflect the situation.
Sound Volume
(Menu/System/Sound Volume)
This menu allows you to adjust both the overall audio volume and the volume of each of the three individual audio groups. The “Volume” parameter controls the overall maximum audio level. The individual audio groups—Beeps, Vario, and Playback (WAV) files—can be attenuated separately here.
If a control (e.g., rotary knob P7 or P8) is assigned to the “Volume” parameter, the overall volume is then managed by this control. If no control is assigned, the volume is set to a fixed value, which can be changed either from the transmitter's startup screen or via button F1 (tool icon) in this menu.
“Stop Playback Switch”: When activated, this switch interrupts only the currently playing audio file.
Warning: If a control is assigned to “Volume” and it is turned all the way down, all voice prompts and alarm announcements will be muted.
Installed Modules
(Menu/System/Installed Modules)
An overview of the functions installed in the transmitter and those that can be installed additionally. New features can be selected and ordered via the manufacturer’s website: https://swshop.jetimodel.com
The transmitter’s registration code, required when ordering features, is shown at the top of the “Installed Modules” table.
A check mark or cross indicates whether a function is enabled or disabled in your transmitter. The number shows how many options out of the maximum possible are currently enabled. Disabled functions and their numerical limits can be unlocked and expanded at any time.
