The lowercase ‘v’ following the Range value represents one of four
scaling factors
used in
converting the telemetry number (0-255) into a suitable read-out value. The ‘v’ setting corresponds
to a read-out range of 0 to 25.5 volts, while a ‘V’ setting gives 0 to 51 volts (at reduced resolution).
Set to ‘A’ for current measurement, the telemetry number is converted to a range of 0 to 65 Amps.
Finally, the ‘-‘ setting displays the unconverted telemetry number (0-255), which can be used for
parameters other than voltage or current, such as temperature or RPM, depending on the sensor.
The A2 read-out works in the same fashion. The Range setting will depend on the sensor being
used. For the FBVS-01 voltage sensor, using the default ratio of 1:6, the range setting would be
19.8v. Fuel level, GPS position, Altitude, Current and RPM may also be measured using FrSky
sensors which plug into a hub. The hub produces a stream of signal outputs suitable for the serial
port on some D-series receivers.
When using third party sensors, the scaling factor of the voltage divider depends on the type of
sensor installed and the magnitude of the values being measured. Refer to the instructions which
come with the sensor for details on how to install and calibrate it.
"Low" and "Critical" alarms for A1 and A2 will trigger audio warnings (beeps) when the measured
value goes below the defined levels. These are defined as Yellow, Orange and Red. to differentiate
among the various beep patterns. Voice warnings can be enabled for A1 and A2 values if a custom
switch is used to detect the alarm condition and a voice switch is used to play an appropriate track.
Similarly audio alarms will be triggered at “warning” and “critical” levels if the received signal strength
indication (RSSI) or the receiver voltage falls below the set levels. These settings, at the bottom of
the Telemetry page, are shown above.
Telemetry 2 (page 11/13)
This page continues the telemetry settings:
Ersky9x Explained – version 1
page
38
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