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Flex 4ES/EX Instruction Manual
September 2016
Page 11 of 37
4. Function Settings
4.1. Transmitter
4.1.1. Transmitter Firmware Version
1) Rotate the power switch key to OFF ( 0 ) position.
2) With the STOP button elevated, press and hold PB1 and PB3
at the same time.
3) Rotate the power switch key to ON ( I ) position.
4) Let go PB1 and PB3 at the same time. The Status LED
displays firmware version with red, green and orange blinks.
5) Exit Firmware Version mode by rotate the power switch key to
OFF ( 0 ) position.
4.1.2. Transmitter Channel Settings
A. Unassigned Channel Scheme (no preset system channel)
When both transmitter and receiver is set to unassigned channel scheme (no
preset channel) the system automatically search and lock onto a free and
uninterrupted channel at every transmitter startup. Pitch & Catch, t-type, and multi-
receiver configurations can not set to unassigned channel scheme.
1) Rotate the power switch key to OFF ( 0 ) position.
2) With the STOP button elevated, press and hold PB1 and PB2
at the same time.
3) Rotate the power switch key to ON ( I ) position.
4) Let go PB1 and PB2 at the same time (entered Channel
Setting mode). The Status LED displays current channel
setting with red and green blinks. A green blink represents the
tens (+10) and a red blink represents the units (+1). For
example, 1 green blink followed by 5 red blinks is channel 15. Channel unassigned
is represented by constant orange on the Status LED.
5) Change transmitter channel to “channel unassigned” by pressing PB4 one time
(Status LED displays constant orange).
6) Transfer “channel unassigned” setting to the receiver by rotate and hold the power
switch key at START position until the Status LED turns to constant green (transfer
complete). Turn off the transmitter power if constant green is not shown on the
Status LED after more than 10 seconds (transfer incomplete); the transmitter will
revert back to its previous channel setting. Make sure the receiver power is turned
on and within the operating distance during the entire process. When transmitter is
set to “channel unassigned” the receiver must also set to “channel unassigned” in
order for the entire system to work.
7) Exit Channel Setting mode by rotate the power switch key to OFF ( 0 ) position.