Lemon Rx DSM2 Instructions Manual

Lemon DSM2/DSMX protocol Telemetry Unit
NOTE: These instructions are based on version 1.5 of the Lemon Telemetry unit, sales of which began
in December 2014. See "Variants" on page 11 for an overview of version differences.
These instructions are written by two users on RCGroups: jj604 and Daedalus66. We have no connection with Lemon.
Lemon and Orange are brand names. Spektrum, DSM2, DSMX, X-BUS, Airware, STi, and the Telemetry logo are Trade Marks
of Horizon Hobby. Deans and PowerBox are Trade Marks. These names are used here simply as descriptions of those items.
NOTE: The DSM2 and DSMX logos have been obliterated in the photographs to avoid any Trademark issues.
Overview
The Lemon Telemetry unit will transmit telemetry data from the model when connected to the bind port of
most DSM2/DSMX-compatible receivers, whether Lemon, Spektrum or Orange. The unit has inbuilt
sensors for receiver voltage, temperature and altitude as well as external sensors for temperature, flight
battery current and voltage, and motor RPM.
Display of the data requires a suitable Spektrum or compatible transmitter that will show selected values
on the screen. At present the following Spektrum transmitters can receive and process the data from the
Lemon unit: DX6 (2014 version), DX7s, DX8, DX9, DX10 and DX18. In addition, the Lemon unit works
with the now-discontinued Spektrum STi Telemetry interface (SPMTR1000) for the iPhone/iPad. It may
become possible for other transmitters to display the telemetry data if equipped with a compatible
telemetry-capable module; such a unit is said to be under development by another manufacturer. The
focus here, however, is on using the Lemon unit with a Spektrum transmitter.
The first four pages of these instructions should give you what you need to get the telemetry unit up and
running. The rest of the document consists of various kinds of additional information likely to be of help
and interest to some users.
Getting Started – First Time Use
Before starting you need to prepare your model, bind the receiver and set it up to work with your
transmitter as usual. Do all the normal setup of servos and mixes so that the model is ready for flight
before moving on to the telemetry setup. It is strongly recommended that you review the Telemetry section
of your transmitter manual in order to understand how the telemetry function and displays work.
This is what the basic connection to a Lemon
10ch receiver looks like.
Lemon Telemetry Instructions
Instructions
And here is the same setup for a Lemon 7-
channel stabilized receiver.
10-Feb-16
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