NOTICE:
All instructions, warranties and other collateral
documents are subject to change at the sole discretion
of Horizon Hobby, Inc. For up-to-date product literature,
visit http://www.horizonhobby.com and click on the
support tab for this product.
Meaning of Special Language:
The following terms are used throughout the product
literature to indicate various levels of potential harm when
operating this product:
NOTICE
: Procedures, which if not properly followed, create
a possibility of physical property damage AND little or no
possibility of injury.
CAUTION
: Procedures, which if not properly followed,
create the probability of physical property damage AND
a possibility of serious injury.
WARNING
: Procedures, which if not properly followed,
create the probability of property damage, collateral
damage, and serious injury OR create a high probability
of superficial injury.
WARNING:
Read the ENTIRE instruction manual
to become familiar with the features of the product before
operating. Failure to operate the product correctly can result
in damage to the product, personal property and cause
serious injury.
This is a sophisticated hobby product and NOT a toy. It must be
operated with caution and common sense and requires some
basic mechanical ability. Failure to operate this Product in a
safe and responsible manner could result in injury or damage
to the product or other property. This product is not intended for
use by children without direct adult supervision. Do not attempt
disassembly, use with incompatible components or augment
product in any way without the approval of Horizon Hobby,
Inc. This manual contains instructions for safety, operation
and maintenance. It is essential to read and follow all the
instructions and warnings in the manual, prior to assembly,
setup or use, in order to operate correctly and avoid damage
or serious injury.
SPMA9574 AIRCRAfT TELEMETRy
AIRSPEEd INdICATOR USER GUIdE
The Spektrum SPMA9574 Aircraft Telemetry Airspeed Indicator
sensor is compatible with the Spektrum™ TM1000 Telemetry
Module X-BUS expansion port.
Specifications
Type:
SPMA9574 Aircraft Telemetry Airspeed Indicator
Measures:
from 15 mph to 350 mph with 1 mph resolution
Operational Voltage:
3.5 to 9.6 volts
dimensions:
28mm x 16mm x 10mm
Weight:
Circuit board - 4 grams/pitot tube - 3 grams
Calibration:
No user calibration required
Units:
Metric or English units
Items Included
• Sensor
• Pitot tube
• 6” X-BUS Extension
• Tubing
Hook Up Information
Insert the X-BUS extension into the Airspeed Sensor and X-BUS
port of the TM1000 Telemetry Module. The sensor has two ports
for the X-BUS extension to attach. Either plug can be used on the
sensor, when using multiple sensing units daisy chaining will be
required. The Airspeed sensor can be installed anywhere inside
the aircraft, and the actual airspeed will display on the
transmitter’s telemetry screen.
Note:
Please make sure your DX8 AirWare
™
software is
updated to at least V2.0.
Mount the TM1000 module near the receiver in a position that
allows the 2.5-inch data lead to extend from the receiver’s Data port
to the Data port on the telemetry module. You can use servo tape
to secure the TM1000 module or wrap it in foam with the receiver.
Plug the Data lead into the TM1000 port marked DATA and plug
the other end of the lead into the receiver’s DATA port.
NOTICE:
Route and secure the antenna away from any
metallic or conductive materials to give the best range.
Binding the Telemetry
Module and Receiver
1. Using the Bind Stylus press and hold the bind button
on the side of the TM1000 telemetry module.
2. While depressing the bind button, power the receiver.
The main receiver, all attached remote receivers and the
TM1000 telemetry module should blink indicating the
system is in bind mode.
3. With the stick and switches in the desired failsafe
positions (normally low throttle and neutral sticks),
put the transmitter into bind mode.
4. The main screen displays the receiver type. After
several seconds, the system connects and reverts
to the main screen.
5. From the main screen rotate the roller to access the
telemetry screens and verify the flight log data and
altitude and speed readings.
Installation
The optional airspeed indicator is designed to be used on a variety
of aircraft. The Sensor can be mounted internally, with the pitot
tube positioned to point directly into the aircraft’s relative wind for
best results. The Airspeed sensor reads dynamic pressure very
similar to full scaled aircraft. Dynamic pressure is measured
by finding the difference in ram air pressure and
the static pressure.
Pressure Port
Static Port
Leading Edge
of Wing
Static Hole
0.5” min
+
–
Note:
Different models may need extensive modification
to place the pitot tube in an undisturbed relative wind
location.
Using two lengths of the included small diameter silicone tube, the
pressure and the static connections of the pitot tube connect to the
“+” and “-“ ports of the MicroSensor, respectively, as shown in the
figure. It is best to mount the pitot tube in your model first, then
determine where you will mount the MicroSensor, and then cut
the two lengths of silicone tube so they reach between the two.
Follow these guidelines when mounting the pitot tube:
1. The pickup end of the pitot tube (the silver colored tip)
should be pointing toward the direction of the model’s
travel. While best results will be obtained if the pitot
tube is perfectly aligned with the direction of travel
in both axes. The “Prandtl” design of the tube will
compensate somewhat for higher angles of attack.
2. The static holes on the pitot tube (figure) should extend
at least ½-inch past the wing’s leading edge, or past
any other obstructions – the farther out, the better.
This is to ensure that the static holes and pitot
pickup are in undisturbed air.
3. For prop planes, it’s important that the tube be
placed so that it is not directly in the planes prop-
wash, which will result in erroneous readings. The best
place to install the tube is on the leading edge of the
wing several inches out from the fuselage, as shown
in figure 1.
4. For jets, gliders, or “pusher” prop planes, the nose
cone often provides a perfect mounting location.
After pitot tube installation, it is recommended that you glue
or otherwise attach the silicone hose to the airframe, to reduce
the chance of a hose vibrating or moving and causing
erroneous readings.
Note:
Please make sure your DX8 AirWare software
is updated to at least V2.0.
WARRANTy ANd REPAIR POLICy
Warranty Period
Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties that
the Products purchased (the “Product”) will be free from defects in
materials and workmanship for a period of 1 (one) year from the
date of purchase by the Purchaser.
1 year Limited Warranty
Horizon reserves the right to change or modify this
warranty without notice and disclaims all other
warranties, express or implied.
(a) This warranty is limited to the original Purchaser (“Purchaser”)
and is not transferable. REPAIR OR REPLACEMENT AS PROVIDED
UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE
PURCHASER. This warranty covers only those Products purchased
from an authorized Horizon dealer. Third party transactions are not
covered by this warranty. Proof of purchase is required
for all warranty claims.
(b) Limitations- HORIZON MAKES NO WARRANTY OR
REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-
EN