Graupner Hendheld RC 2.4 GHz No. of channels: 5 33110 User Manual

115

Country selection (COUNTRY)
The Country setting is present in order to cater for vari-
ous directives (FCC, ETSI, IC etc.). The HoTT 2.4 radio 
system features a restricted frequency band for France. 
If you wish to use the RC system in France, the country 
setting on the transmitter must be set to “France” mode, 
as described. It is essential not to use the Universal/
EUROPE mode. Factory setting is GENERAL.

Range checking (RANGE TEST)
switches the range test on or off, the remaining time is 
displayed. The display also works if the range check
is started with the BIND / RANGE button on the trans-
mitter.

… you cannot enter any settings. This page is for infor-
mation purposes only:

S-QUA

Signal quality in %

S-dBm

Receive performance in dBm

S-STR

Signal strength in %

R-TEM.

Receiver temperature in °C

L PACK TIME Indicates the time in ms for which 

the longest data packet was lost in 
transmission between transmitter and 
receiver

R-VOLT

Current receiver operating voltage, in 
Volt

Signal quality (S-QUA)
The signal quality (S-QUA) is sent “live” to the transmit-
ter via the receiver’s downlink channel, and shows the 
signal strength in %.

Receive performance (S-dBm)
The receive performance (S-dBm) is displayed as a ne-
gative value, i. e. a value approaching zero is the highest 
value (= best reception). The lower the value falls, the 
worse is the receive performance. This is an important 
item of information, particularly when you are carrying 
out a range-check before operating the model.

Carry out a range-check as described on pages 62 and 
71 before every fl ight, and remember to simulate all the 
servo movements which are likely to occur in the air. 
In active range-check mode the range must be at least 
fi fty metres on the ground. To guarantee safe operation 
of your model, a value no higher than -80 dBm must be 
displayed in the “RX DATA” display under “S-dBm” at this 
distance. If the value falls below this (e. g. -85 dBm), you 
should under no circumstances fl y your model. Instead 
check the receiving system installation and the aerial 

positions.
When operating a model this value should not fall below 
-90 dBm; if it does, reduce the distance between the 
pilot and the model. However, the audible range war-
ning (beeping at one-second intervals) will normally be 
triggered before this value is reached, in order to ensure 
safe operation.

Signal strength (S-STR)
The value for signal strength (S-STR) is displayed in %. 
An audible range warning (beeping at one-second inter-
vals) will always be generated as soon as the receiver 
signal in the downlink channel is too weak. However, 
since the transmitter has a much higher transmitting 
power than the receiver, the model can still be operated 
safely at this point. Nevertheless, in the interests of 
safety the distance to the model should be reduced until 
the audible warning ceases.

Receiver temperature (R-TEM.)
Ensure under all fl ight conditions that the receiver stays 
within its specifi ed temperature range (ideally between 
-10 and +55°C).
The limit values for receiver temperature after which 
a warning occurs can be set in the “SERVO TEST” 
sub-menu under “ALARM TEMP+” (50 … 80°C) and 
“ALARM TEMP-” (-20 … +10°C). If the temperature 
exceeds or falls below the set limit, an audible signal 
(continuous beeping) is triggered, and “

” is 

displayed at top right in all the “RX” receiver sub-menus. 
At the same time the “R-TEM“ parameter is highlighted 
on the “RX DATAVIEW” screen page.

Data packets (L PACK TIME)
This displays the longest period in ms in which data 
packets were lost in transmission from the transmitter to