Jeti model MVario2 User guide
MVario2
®
MVario2
System that measures
atmospheric pressure
EN
EN
User Manual
MVario2
English
1. Description and function ................................................................ 03
1.1 The main function ......................................................................... 03
1.2 Technical data ................................................................................ 04
2. Placement and connection .............................................................. 05
2.1 Placement of MVario2 sensor ................................................... 05
2.2 Connecting the MVario2 sensor ............................................... 05
2.2.1 Connection with the JETIBOX terminal only ............... 05
2.2.2 Connection with a receiver and Duplex transmitter
module (non US) ............................................................... 06
2.2.3 Connection via Expander ................................................ 06
3. Setup .................................................................................................... 07
3.1 Setup via JETIBOX ....................................................................... 07
3.1.1 Menu Sensor MVario2 in the environment JETIB OX .. 07
3.2 Setup via DC/DS line transmitters ............................................. 15
3.2.1 Main setup of the M Vario2 senso r in th e DS/DS
transmitters ....................................................................... 15
4. Possible connection ......................................................................... 22
4.0.1 Connection to the JETIBOX ............................................. 22
4.0.2 To the receiver input "Ext." ................................................ 23
4.0.3 Connection via Expander EX .......................................... 24
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MVario2
4.0.4 Connection to the receiver input (Ext.) with the option
to connect more sensors .................................................. 25
4.0.5 Connection directly to the receiver input (Ext.) with the
F5J Limiter or ALES Limiter function activated ........... 25
4.0.6 Connection to the receiver input (Ext.) with a possibility
of logical levels detection and transmission of these
values via telemetry .......................................................... 27
5. Warranty, service and the technical support ............................ 28
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MVario2
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MVario2
1 Description and function
MVario2 is a system that measures atmospheric pressure and
using the obtained data it calculates the altitude above sea level,
airspeed, and the rate of climb as well as the rate of descent.
Changes in climb and descent rates are signaled as well. The sensor
also alerts you if any alarm setting is exceeded.
The sensor data can also be transmitted via the Duplex system to
the user.
The Duplex system takes advantage of the 2.4GHz band for
communication. This system not only transmits control data to the
model but also sends data from the model back to the transmitter.
The telemetry data collected during operation is shown as actual,
measured values in real time on either LCD screen of a connected
JETIBOX or on the DC/DS JETI model transmitters.
atmospheric pressure
English
ver. 1.00
1.1 The main function
● Measurement of altitude, pressure, and temperature.
● Very accurate and fast indication of climb and descent.
● Possible sound alarm signaling using a JETI Tx module (EU only)
or JETIBOX profi.
● Possibility to be used as an Expander and to connect other
sensors.
● Adjustable compensation of energy (TEK) via MSPEED EX
sensor.
● Possibility to be used as an altitude switch in FAI F5J or ALES
competition categories.
● The device is compatible with EX Bus protocol, i.e. it is possible
to be configured comfortably via a special menu in DC/DS JETI
model transmitters.
● Firmware updates.
system that measures
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MVario2
Technical data
MVARI O2
Dimensions
35x16x7mm
Weight with the cables
5g
Measuring accuracy of absolute/relative altitude
±9m/±3m
Resolution of measured height
0.1m
Typical noise ratio in height changes measurement
±0.05m/s
Measurement range
450÷1100hPa
Operating temperature
-10÷85°C
Supply voltage
3.5 ÷ 8.4V
Current consumption
15mA
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1.2 Technical data
The sensor enables an acoustic signal for the climb rate/descent
rate or for exceeding of a preadjusted limit value. The acoustic
signal consists of 4 different kinds (steps) for climbing and the same
amount of steps for descending. The step width can be adjusted by
the user. The climb signal consists of short interrupted tones, the
descent signal consists of long permanent tones.
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Ext1/ESC In
Ext2/ESC Out
Disabled
Disabled
Expander
Expander
ESC/Servo input
ESC/Servo output
Logical input No. 1
Logical input No. 2
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2 Placement and connection
2.1 Placement of MVario2 sensor
MVario2 is a very sensitive pressure sensor. Any change in pressure
causes a change in the indicated altitude, climb rate, etc. The sensor
should be mounted in the model in such a way that the sensor is not
affected by air pressure flowing inside the model, but only by static
atmospheric pressure. In other words, place the sensor in a model
where it is only influenced by the static atmospheric pressure. For
the most accurate altitude measurement, do not place the sensor
near any components that generate heat during flight (e. g. near
engines, motors or ESCs).
2.2 Connecting the MVario2 sensor
MVario2 has an output marked Ext. and two programmable ports
that are labeled as Ext1/ESC In and Ext2/ESC Out. Using the Ext.
port of the sensor the data is transmitted to the receiver or to the
connected JETIBOX, and it serves as a current supply as well.
Possible functions of the programmable pins
2.2.1 Connection with the JETIBOX terminal only
The three-wire cable with JR plug (black connector) can be
plugged in directly into the JETIBOX (socket with the label
Impulse, + - ). For current supply use the second input of the
JETIBOX with the (+ - ) label, please apply a voltage of 3.5-8.4V.
When taking advantage of this type of connection you must be
aware that no wireless data transfer exists and the measured data is
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MVario2
directly shown on the LCD screen of the JETIBOX. This connection
type allows no alert signal generation and no acoustic signals of the
vario, because the buzzer is a component of the transmitter module
(non US) which is not connected in this case. Any alert signals are
only shown on the JETIBOX LCD screen.
2.2.2 Connection with a receiver and Duplex transmitter
module (non US)
Connect the three-wire cable of the MVario2 sensor with JR plug
(black connector) to the back side of the Duplex receiver (to the
socket marked Ext.). Set the sensor input that is marked as
Ext1/ESC In via the JETIBOX to the function of input servo pulses.
Connect the input labeled Ext1/ESC In using an additional cable
with a JR connector to a free receiver channel. This channel will
then, together with the Tx module, function as the control of
acoustic signaling for the climb and descent. E.g. the acoustic
signaling will be disabled by the switch in one position and by
putting the switch in the other position the MVario2 starts
indicating the climb/descent ratio. The MVario2 module gets its
current supply through the receiver. In order to adjust parameters
of the MVario2, connect the JETIBOX to the transmitter module
and switch on the receiver and the transmitter.
2.2.3 Connection via Expander
Connect the three-wire cable of the MVario2 sensor with JR plug
(black connector) to one of the EXPANDER inputs. Provide the
MVario2 input labeled Ext1/E SC In with the JR connector,
configure it as a servo pulses input, and connect it to a free receiver
channel. The expander enables connection of several telemetry
sensors to one receiver. In such a case the MVario2 sensor gets its
current supply through the Expander and the Expander through
the receiver.
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MVario2
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3 Setup
3.1 Setup via JETIBOX
The parameters are set and the data is read out via JETIBOX. After
connecting to the MVario2 sensor, the welcome screen appears
that shows the sensor identification and relative altitude in the first
line. The second line contains the indicator and the value of vario
(climb/descent rate in meters per second). The vario indicator
consists of eight positions. The speed of climb and descent is
indicated by the number of filled positions. The „>“ is one step of
the climb. The „<“ symbol in one step of the descent. If the D button
is pressed, you get to the MVario2 main menu.
3.1.1 Menu Sensor MVario2 in the environment JETIBOX
1. MENU SENSOR: ACTUAL VALUES - by pressing the D button
(arrow down) select depicting of actual measured values
Rel/Abs Altitude – relative and absolute altitude. After switching
on, the device creates a reference (zero) level of the relative
altitude based on the absolute altitude. Relative altitude
indicates the difference between the actual absolute altitude and
the zero reference level.
Vario, alternatively Vario/Compensat. – depicts actual speed of
the climb/descent in meters per second. Alternatively, in addition
to the actual climb / descent rate, the value obtained using the
MSPEED EX sensor after the compensation of total energy is
depicted.
Abs. pressure – depicts actual atmospheric pressure in hPa
(hectopascal).
Temperature – shows actual temperature of the sensor.
ESC In/Out – shows the value of the receiver channel that is
connected to the appropriate Ext1/ESC In, respectively Ext2/ESC
Out connector (in milliseconds). To display the correct values the
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appropriate input and output needs to be configured in the
settings of the sensor.
2. MENU SENSO R: MIN/MAX – by pressing the D button (arrow
down) select depicting of extremes records that occurred during
the measurements
Vario MIN/MAX – indicates the minimum descent rate and the
maximum climb rate.
Altitude MAX – shows the maximum reached relative altitude.
Temp MIN/MAX – shows the minimum and maximum temperature
of the sensor.
FAI Altitude – in FAI F5J mode the „Start height“ of the flight is
depicted, which corresponds with the valid FAI F5J rules.
Speed MAX – maximum speed measured using a connected
MSPEED EX sensor.
Reset MIN/MAX – manual reset of the maximums and minimums,
followed by reinitialization of the altimeter. Pushing R and L
arrows (right and left) together deletes the extremes of all
measured parameters.
3. MENU SE NSOR: SETTING – by pressing the D button (arrow
down) you get to the basic setting of the MVario2 sensor.
Device mode – enables fast setting of the basic function of the
sensor.
See the available options below:
● Vario – standard universal mode for most applications. In this
mode it is possible to arbitrarily set the Ext1/ESC In and
Ext2/ESC Out ports, it also enables the use of an MSPEED EX
sensor to compensate the total energy.
● F5J Limiter – special mode for training flights of FAI F5J
category. In this mode the Ext1/ESC In port serves as the throttle
channel input, conversely the Ext2/ESC Out port is used as the
output to connect an electronic speed controller.
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MVario2
Note:
For competiti on flights in FA I F5J category there exists a
separate firmware that is freely available to be downloaded on
„www.jetimodel.com” and is always marked with its version
MVARIO2 V. FX.XX. This firmware has been made as simple as
possible, the telemetry functions are blocked and is possible to
be used only as an altitude limiter.
● ALES Limiter – special mode for ALES type categories (Altitude
Limited E lectric Soaring). In these categories the motor is
automatically switched off after exceeding the set altitude or
after elapsing specified motor time (which ever event occurs
first). The Ext1/ESC In port serves as throttle channel output from
the receiver, conversely the Ext2/ESC Out port is used to connect
the electronic speed controller.
Ext1 Mode, respectively Ext2 Mode – if the device is in the Vario
mode, the Ext1/ESC In port, resp. Ext2/ESC out port can be
configured to several functional alternatives:
● Off (by default) – the port has no function.
● Expander – it is possible to connect any sensor to the port
(sensors using JETIBOX, Duplex EX and EX Bus protocols are
supported). Detection of the MSPEED EX sensor presence is
done automatically.
● ESC/ServoIn – the port is configured as the servo impulses input
from any receiver channel. Based on the value of the appropriate
channel deflection it is possible to enable or disable generating
the acoustic signals for climb/descent rate. These are further
indicated by the transmitter module or by connected JETIBOX
profi. This operation is valid for Ext1/ESC In port only.
● ESC/ServoOut – the port is configured as the servo impulses
output. In the Vario mode there is the same deflection on the
output as on the input of Ext1/ESC In, in other modes (F5J Limiter
and ALES Limiter) this port serves as throttle channel control and
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