E.M.I. ETX-41 User manual

Enjoy Model International Corp. (EMI)
ETX-41
Functions：
1. Self-check while power on, Transmitter will alarm if any major function does not work properly.
2. Low battery warning, it alarms when the battery of transmitter is lower than 8.4V.
3. All channel reverse switches.
4. PPM signal shift ( + & - ) for all major brand receivers. For avoiding mistake - switching during
operation, the switching will only take effect while next time power on.
5. Elevon and V-tail mixer build in. Switch between Elevon, None or V-tail mixing setup. For avoiding
mistake - switching during operation, the select switch will only take effect while next time power on.
6. 5 minutes timer notice, buzzer will notice every 5 minutes (-. for 5 minutes, -.. for 10 minutes, -… for
15 minutes until -…… for 30 minutes, then circle it) when the timer switch is on.
7. Trainer jack for instructor (power on side) & student (power off side) training flight. Two EMI
ETX-41s must set the same shift for trainer operation. It works with all major R/C flight simulators.

Layout of Mode 2 control type：
(The channel number of the control sticks will be different from different stick mode type.)
Antenna
Carry handle
CH 1, CH2
Control stick
CH 1 trim leve
r
CH 2 Trim leve
r
Crystal socket
Main switch
CH. 1,2,3,4 servo direction select
switchs
CH 3, CH4
Control stic
k
CH 3 trim leve
r
CH 4 trim leve
r
Power indicato
r
Mixer switch
Shift select switch
5 minutes timer switch
Trainer switch
(Located at back
of the transmitter)
Trainer Jack
(Located at
bottom side)

Functions and switches: (Please refer to above Diagram.)
There are many functions and switches are built in this transmitter, the following show how they work.
1. Self-check while power on: The transmitter will do Self-check while power is on, Transmitter will
alarm “Bi” sound once when system check is OK“, or continue “Bi, Bi, Bi…..” warning sound when
the self check is false. Please send it for repairing。
2. Low battery warning: The transmitter power indicator LED shows its batteries status: Green - OK,
Red - Need replacing, more over it will alarm “Bi, Bi..” sound to warn a MUST replacing. Urgent
land the plane and do it.
3. All channel reverse switches.: There are reverse switches for each channel, set it to match to your
airplane servos installation.
4. PPM shift switch: Special 72 MHz FM PPM shift switch，Switch it Upward to send out PLUS (+)
shift PPM control signal, downward for Negative (-) shift PPM control signal, check with your
receiver and set it correctly to match to your PPM receiver system. For avoiding mistake - switching
during operation, the switching will only take effect while next time power on.
5. Mixer switch: Mixer control switch is set as〝N〞position for no any mixer function setup,〝E〞for
“Elevon” mixing (CH1, 2 mixed，for tail-less plane)。〝V〞for V-Tail mixing (CH2, 4 mixed, for
V-Tail type plane). For avoiding mistake - switching during operation, the switching will only take
effect while next time power on.
6. Five Min. timer alarms:As switch up to “on” position, transmitter will alarm two short “Bi” sound
and start the timing. Up to 5 Min. it will alarm one long and one short “Bi” sound, one long and two
short ‘Bi’sound as it is 10 Min., one long and three short “Bi” sound as it is 15. constantly to 30 Min.
then circle again. Switch it off, it will response one short “Bi” sound then stop and reset the timing.
7. Trainer jack and switch: Instructor can use the trainer switch of his transmitter and a trainer core to
connect to student’s radio to fly the same airplane, and decide who is the controller for a safe training.
First, both radios must have the exactly same setup and the instructor’s transmitter must in the same
frequency band as the plane. Plug the trainer core into both radios, whole radio system except the
transmission will turn on automatically. Turn on Instructor’s radio and MUST keep the student’s
radio off. In normal condition, the plane is controlled by the instructor, who can push trainer switch
upward to give the control to the student, and release the switch to get back the control immediately.
Please notice that connecting wire must not entangle any thing or body cause pulled off.
First edition 02-Jun-2005 / EMI

910805 4
This instruction manual contains all information necessary for the proper installation and operation of
the transmitter including add controls, adjustments and switched that may be operated or adjusted
without resulting in a violation of the FCC rules.
Warning: Any adjustment that could result in a violation of the rules or that is recommended to be
performed by or under the immediate supervision and responsibility of a person certified as
technically qualified to perform transmitter maintenance and repair duties in the private land mobile
services and fixed services by an organization or committee representative of users of those services.
Warning: The replacement of any transmitter component (crystal, semiconductor, etc.) that could
result in a violation of the rules.