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D I G I TA L S E R V O P R O G R A M M E R H F P - 1 0 O P E R AT I O N M A N U A L Charging the HFP-10
The HFP-10 uses an internal 1100mA, 4.8v nicad battery to
power the test and programming functions. The re-charging port is
located at the end of the unit and is designed for use with a
standard overnight wall charger. Before using the programmer,
charge it for 24 hours using a charger from any modern radio system.
If you do not own a overnight AC wall charger, any peak charger
capable of charging a 4 cell 4.8V. nicad battery at about 1 to
1.5amps will work.
Low Battery Warning: If the programmer voltage is
below 4 volts, the programmer LCD screen will
flash"LOW BATT" . Programming should be halted
until it is recharged.
Welcome to the world of high performance servo technology. Using your
new servo tester and Hitec digital servo programmer, you can test any
brand of transmitter for the pulse sent to the receiver and any servo for
voltage and proper movement. Additionally it will allow you to program
the functions of Hitec digital servos.
This manual is split into two sections, the first being the Hitec digital servo
programming section, followed by the information on how to test any brand of servos.
General Hitec Servo Information
Pulse Data
All Hitec servos require 3-5V peak-to-peak square wave pulse.
Hitec digital servos require 0.8-5V peak-to-peak square wave pulse.
Pulse duration is from 900 s to 2100 s with 1500 s as center.
The pulse refreshes at 50Hz (20ms).
Voltage Range
All Hitec Servos can be operated within a 4.8V-6V range.
Only the HS-50 operates exclusively with 4 Nicad cells ( 4.8 volt ).
Wire Color Meanings
On all Hitec servo the Black wire is 'ground', the Red wire ( center) is
'power' and the third wire is 'signal'.
Direction of Rotation
All Hitec servos turn in a Clockwise direction ( CW ).
The following is the function flow chart of the
Tester/Programmers features;
This instruction manual is formatted to follow the tester/programmer
software flow. To access the features listed below, the user would turn
on the device and scroll through the screens using the UP/L or DN/R button.
Text in the LCD display
Function
1. Program Reset
Reset to factory default
2. Program DB Width
Sets the dead band width
3. Program cw/ccw
Sets the direction of rotation, clockwise / counter clockwise
4. Program Speed
Slows or speeds up the rotation speed
5. Program FSOnOff
Turns the Fail Safe on or off
6. Program EPAneuFS
Sets the End points, Neutral point and Failsafe point
7. Measure Pulse
Measures the receiver pulse to the servo
8. Measure Voltage
Measures the receiver voltage to the servo
9. S-Test Auto
Automatic Servo movement test program
10. S-Test Manual
Manual Servo movement procedure
Section One: Hitec Digital Servo Programming
Hitec Digital Servo General Information.
Hitec digital servos can be used "out of the box" without any
programming and they will act like any traditional servo product.
However Hitec expanded the capability of our digital servos to
include the ability to program your own unique performance specification
parameters. Many of you will have modern computer radios that will
allow you to program most of these functions, some like dead band
width are only programmable by using the tester/programmer device.
Programmable functions of the Hitec digital servos
Factory Default Reset
Dead Band Width Adjustment
Direction of Rotation
Speed of Rotation
Fail Safe on - off
End Point
Neutral Point
Fail Safe Point Preset
1. Program Reset:
The reset function will set your servo back to the factory default settings.
This should be done before programming your servo for the first time.
1
2
3
4
7
8
5
6
! WARNING !
REMOVE ALL CONTROL LINKAGES FROM THE SERVO
BEFORE PROCEEDING WITH THE RESET FUNCTION.
! Additional Warning On Early Production Hitec Digital Servos !
A very few early model Hitec digital servos will "lock" to one side and
appear to die when the reset function is used. If this happens to you,
simply unplug the servo from the programmer and manually twist the
2. Dead Band:
This will allow the width of the neutral point to be changed from 3 s - 48 s.
What is dead band width and why do I want to program it?
The dead band width is configured in microseconds or " ìs".
It is the "space" the neutral point takes up. The larger the number,
the wider the dead band will be. Large planes and surface vehicles
often will "gang" several servos together on one control surface.
It is important that these servos have matched dead band widths to
avoid having them "fight" each other at the center point.
a. To adjust this feature push the input button and the programmer will
search for the settings; X:Y will appear with X being the current setting
and Y is adjustable from 1-16. The value of "1" is about 3 ìs and is the
smallest dead band width setting available.
b. With the knob, select the Y setting you want and "M" button to
change the setting.
c. "One" is the tightest dead band width setting and provides the best
centering but will also cause the servo to beep quite a bit,
the wider the dead band the less beeping you will get around center.
d. Press Input to exit
3. Rotation:
Select the servos rotation from either clockwise or counterclockwise.
a. To adjust this feature push the input button and the programmer
will search for the settings; ccw or cw will appear.
b. Press DN/R to set the servo to cw (clockwise)
c. Press UP/L to set the servo to ccw (counter clockwise)
d. Press input to exit
servo horn to the approximant "center point of travel".
The servo will have been reset and is ready for programming.
What is Failsafe and how is it used?
Traditionally a PCM radio system would allow the user to program a "failsafe"
point that selected servos would revert to if the plane or surface vehicle suffered
a loss of signal from the transmitter. With your programmer and a Hitec digital
servo you can program a failsafe point into the servo and have thebenefits of
failsafe without the expense and drawbacks associated with PCM technology.
Suggested uses would include dropping the throttle servo to idle, slight
deflections from the neutral point for aircraft ailerons and or elevators
The following will arm or disarm the failsafe parameters you can program in step 6.
a. To turn this feature on or off, push the input button. Once it has searched
it will show you if the failsafe feature is turned "on" or "off,"
b. To turn the failsafe feature "on," push the DN/R button. To turn it "off",
push the UP/L button.
c. Press input to exit.
d. Go to the EPAneuFS screen to set the failsafe. (See step 6)
6. EPAneuFS (EPA, Neutral and Failsafe):
This feature allows you to set your End Point, Center point and
Failsafe position.
Section Two Transmitter and Servo Test Section
The following are test functions and can apply to any model of servo or transmitter.
7. Transmitter Signal Pulse:
See the pulse the receiver is supplying to the servo.
a. For this procedure the programmer must be plugged into the
receiver channel that you want to test.
b. Push the input button to view the pulse from the transmitter.
c. Move the stick associated with the channel the programmer is
plugged into, to see the pulse range.
d. Press input to exit.
8. Voltage:
View the voltage that is being supplied to the servo from the receiver.
a. For this procedure the programmer must be plugged into any receiver channel.
b. Turn the transmitter on and then turn on the receiver switch.
c. Press the input button and the voltage will appear. The lowest voltage level
will be shown on the display. When you press the M button, you will see the
actual voltage level. The voltage level will drop down when you have servos
connected to the receiver are moving. You also can connect one servo to the
field programmer and drive it with the knob.
d. Press the input button to exit.
9. S-Test Auto:
Test the servo movement automatically.
a. Press the input button to execute.
b. Turn the adjustable knob to actuate the servo manually.
c. To test the end points, press the UP/L button to actuate the servo automatically.
The normal parameters for this are 2100 s to 900 s.
d. Use the adjustable knob to set the delay.
e. Press the input button to stop.
f. To test the operation of the servo potentiometer, press the M button.
The programmer will sweep the output pulse from 2100 s to 900 s and back.
The servo will drive slowly from one end point to the other. Observe the servo
horn, if it moves smooth, things are fine. If the movement is jerky or stutters,
the servo potentiometer could be dirty or defective.
g. Use the adjustable knob to set the sweep speed.
h. Press the input button to stop.
i. To test the resolution of the servo and see the difference in dead band
values between other servos, press the DN/R button.
j. Turn the adjustable knob to set the jitter value from 0 s -31 s.
k. Press input twice to exit.
10. S-Test Manual:
Test the servos movement manually.
a. Press the input button to execute.
b. Turn the adjustable knob to actuate the servo manually.
c. To test the left endpoint, press the UP/L button. The value should be 900 s.
d. Press the input key to exit.
e. To test the center point, press the M button. The value should be 1500 s.
f. Press the input key