Multiplex 4 5182 Manual De Instrucciones página 28

The data at address 3 are converted into sounds as well as
being displayed on the screen. In our example this means the
current rate of climb or descent.
The values for maximum climb at address 4 are only shown on
the Telemetry-Display as a value, i.e. there is no sound output.
13. O D
THER ISPLAYS
13.1. Binding mode
If the transmitter is set to Binding mode, the message "BINDING"
flashes on the Telemetry-Display:
13.2. Range-Check mode
If the transmitter is set to range-check mode, the message
"REICHWEITE!" or "RANGE CHECK!" flashes on the Telemetry-
Display:
The telemetry values of one screen page are also displayed,
alternating with this message.
The Telemetry-Display also emits a repeated audible alarm at
intervals of about ten seconds, warning you that range-check
mode is active. The volume of this alarm can be adjusted using
the volume control on the Telemetry-Display itself.
! Tip: when you are carrying out a range-check it can be par-
ticularly useful to observe the LQI value on your Telemetry-
Display (default setting: address 1), as this telemetry value can
help you to establish the optimum orientation of the receiver
aerial(s). We therefore recommend that you carry out several
range-checks with different aerial positions, watching the LQI
value all the while.
In this connection please see the supplementary explanation in
Chapter ( 14.), and Chapter (
13.3. Pupil Mode when using the M-LINK Trainer Stick
If the transmitter is set to Pupil mode, and you are also using the
M-LINK Trainer Stick (# 4 5183), the Telemetry-Display per-
manently displays the message "SCHÜLER-MODE" or "PUPIL-
MODE":
Operating Instructions - Telemetry-Display
14.2.3.) in particular.
S
14.
UPPLEMENTARY
D U
OWNLINK AND
14.1. Displayed LQI value range
The quality of the radio connection (Link Quality Indicator - LQI)
is generated by default at address 1. The range of LQI values
displayed on the screen extends from 100% (best possible
value) down to 0%.
As the link quality declines - typically when the distance between
the model and the transmitter is increasing, or when the model is
in an unfavourable attitude - this value diminishes in increments
of 10%.
The LQI value shows the quality of the data transmission from
transmitter to receiver, i.e. it provides a value for the quality of
the uplink. The value is calculated from the signal field strength
and other parameters.
Since the field strength varies according to the model's attitude,
and the model's position is subject to wide variations, the system
automatically smoothes out the value, taking further parameters
into consideration.
14.2. Interpreting the LQI
14.2.1. General information
The sensitivity of the field strength measurement is lower than
the sensitivity of the M-LINK receiver itself. This means that the
receiver can certainly continue to function even when the LQI
value falls to 0%.
The transmitting power of the transmitter and receiver is the
same. Nevertheless the downlink channel - i.e. the connection
from the receiver to the transmitter - breaks down earlier than
the uplink channel. The reason for this is the low sensitivity of
the transmitter; it is as if the transmitter were wearing "ear
defenders".
14.2.2. Normal operations
During normal operations (flying a model) the downlink con-
nection usually breaks down when the link quality falls to an LQI
value of about 60%. When this happens, the last valid telemetry
value picked up by the transmitter stays permanently on the
transmitter screen, i.e. the display "freezes", and the telemetry
values are crossed out with a thin horizontal line.
If valid data is picked up again at the transmitter, all the tele-
metry values are updated and the horizontal lines disappear.
! Note:
If the downlink connection collapses at a value of about
60%, for example, the connection with the model (i.e. the
uplink) continues to function.
14.2.3. Range check mode
When you select "range check" mode, the transmitted power of
the uplink channel is very greatly reduced compared with the
downlink channel. For this reason the LQI display is an excellent
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E
XPLANATION
PLINK
: LQI,