Bedienungsanleitung Graupner MX-16 HoTT (Seite 139 von 200) (Englisch)

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Program description: Telemetry menu

L.R-VOLT Lowest receiver operating voltage

since the last power-on, in Volt

SENSOR1 Shows the values of the optional

telemetry sensor 1 in Volt and °C

SENSOR2 Shows the values of the optional

telemetry sensor 2 in Volt and °C

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

negative 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.

Note:

In the case of negative numbers the value is reversed:

the higher the number following the minus sign, the

lower the value. This means that a receive performance

of, say, -80 dBm is worse than one of -70 dBm.

Carry out a range-check as described on pages 80 and

89 before every ﬂight, 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

ﬁfty 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 ﬂy 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 warn-

ing (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 ﬂight conditions that the receiver stays

within its speciﬁed 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 “TEMP.E” 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

the receiver. In practice this means the longest time in

which the radio control system went into Fail-Safe mode.

Operating voltage (R-VOLT)

Check the receiver’s operating voltage constantly. If it is

too low, you must under no circumstances continue to

operate your model, and certainly not launch it.

The low receiver voltage warning can be adjusted within

the range 3.0 to 6.0 Volt in the “SERVO TEST” sub-menu

under “ALARM VOLT”. If the voltage falls below the

threshold, an audible signal (repeated double beep, long

/ short) is generated, and in all the receiver sub-menus

“RX …” you will see “VOLT.E” at top right. At the same

time the parameter “R-VOLT” is highlighted in the “RX

DATAVIEW” sub-menu.

The current receiver battery voltage is also shown in the

basic display; see page 24.

Minimum operating voltage (L.R-VOLT)

“L.R-VOLT” shows the receiver’s minimum operating

voltage since the last time it was switched on.

If this voltage differs signiﬁcantly from the current

operating voltage “R-VOLT”, this could mean that the

receiver battery is being overstressed by the servos,

causing collapses in battery voltage. If this should occur,

we recommend installing a higher-performance receiver

battery to ensure maximum operating safety.

Sensor 1 + 2

Shows the values of the optional telemetry sensor 1

and, if present, sensor 2 in Volt and °C. You will ﬁnd a

description of these sensors in the Appendix.

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