5.
Installation Process
Instruction Manual for FrSky DHT-U V2.3
Instruction Manual for FrSky DHT-U V2.3
1. Open the transmitter and find out the battery power supply line, GND and PPM signal line . Or connect directly
to coresponding pins after original module is removed.
2. Solder the battery power supply line, GND and PPM signal line to corresponding wires of DHT-U(RED
→
V+;
BLACK
→
GND; BROWN
→
PPM).
3. Clamp DHT-U to the transmitter’s handle or antenna base via provided clamp and screw or FMS (FrSky
Mounting Stand).
4. Connect the module antenna to DHT-U.
6.
Bind Procedure
Binding is the process of uniquely associating a particular receiver and transmitter, to exclude and potentially
interfering transmitters. A transmitter can be bound to multiple receivers (not to be used simultaneously). A receiver
can only be bound to one transmitter. This association is a key component in newer 2.4GHz radio systems and
must be done before the equipment can be used.
1) Ascertain that the transmitter is in
PPM
mode. Turn the transmitter off.
2) Turn the transmitter on and enter
MENU
page, select
Bind_Mode
.
3) Turn on the receiver while holding
F/S
button on the receiver. The
RED LED
on the receiver will flash, indicating
the binding process is completed.
4) Turn off both receiver and transmitter.
5) Turn the transmitter on and enter
MENU
page, select
Normal
. Re-connect battery to the receiver. The
RED
SOLID LED
on the receiver will indicate receiver is receiving commands from the transmitter.
After above steps are completed, both the transmitter and receiver are ready to be used. The bind procedure
will not have to be repeated unless one of the two is replaced.
Follow the steps below to set failsafe DURING flight:
1) Bind the receiver first and turn on both transmitter and receiver;
2) Enter
MENU
page, select
F/S
to enter failsafe sub-page, press
Button B
to set failsafe at the desired failsafe
position.
﹡
FrSky default log time is 3min while log step is 2sec. Both are selectable. Data will be recorded as per log time and log step.
A pre-flight range check should always be done before each flying session, especially with a new model.
Reflections from nearby metal fences, concrete buildings or trees can cause loss of signal both during the range
check and during flight.
The following steps are to be followed to perform the range check of the model before flight:
1) Place the model at least 60cm (two feet) above non-metal contaminated ground (e.g. on a wooden bench).
2) The receiver’s antennas should be separated in the model and not touch the ground. Place the module antenna
in a vertical position.
3) Turn the transmitter on and enter
MENU
page, select
R-CK
, connect battery to the receiver. The effective
distance will be decreased to 1/30 of full range.
4) Walk away from the model while simultaneously operating the controls on the transmitter, confirming that all
controls operate normally to a distance of 1/30 of the full range.
9.
Difference between DHT-U V2.0 and V2.3:
1) Capable of selecting eight data to show on the first two data screens;
2) V8 functions;
3) Improving the Current display precision to 0.1A.
1) SD card logo will show up on the main screen after it is inserted into SD reader;
2) Press the top left button on DHT-U to enter setting menu for data log;
3) *Log time (time to start data log: 1/3/5 minutes after powering up) and *log step (time interval: 1/2/5 seconds)
are selectable;
4) File format for data log: csv
8.
Range Check
Note: there might be LED status difference among different receivers, please refer to
receiver manual for more details.
7.
Failsafe Setting
In some special circumstances, such as strong interference, the signal may be lost. When signal is lost in a
short period, the receiver continues to try to search for the transmitter, at the same time it keeps the last command
from the transmitter, until a new command is received. Failsafe is recommended to set when system is firstly used,
or receiver has been re-bound.
Follow the steps below to set failsafe BEFORE flight:
Option-1. How to set failsafe to a user-determined state on lost signal:
1) Bind the receiver to the transmitter module first and turn on both the transmitter and the receiver;
2) Move the controls to desired failsafe position for all channels;
3) Press briefly the F/S button on the receiver and you are done.
1. Roll the 3-way roller switch up and down to switch among data screens.
2. Press Button A and Button B at the same time for 0.5 second to switch from data
screen back to main screen.
3. GMT(H/M/S) time display can not be modified.
9.1 Below functions have been disabled in V2.3:
9.2
Data log function has been added in V2.3:
Data Screen 4
Lipo voltage display from FLVS-01 (6S on one page, 12S at most)
Note: If failsafe is not set, failsafe default will hold last position before signal is lost.
In this case, there exists risk that your model will fly away or cause injury.
Option-2. How to set failsafe for no pulses on lost signal:
1) Just press briefly the F/S button on the receiver while the transmitter is off and you are done.
