FMA EXTREME 5 User manual

FMA LIMITED WARRANTY ON RADIO RECEIVER PRODUCTS
FMA, Inc. warrants this receiver to be free of manufacturing defects for the term of one year from
the date of purchase. Should any defects covered by this warranty occur, the receiver shall be
repaired or replaced with a unit of equal performance by FMA, Inc., or an authorized FMA service
station.
LIMITS AND EXCLUSIONS
This warranty may be enforced only by the original purchaser, who uses this receiver in its original
condition as purchased, in strict accordance with the Extreme 5 owner's manual. Receivers
returned for warranty service to an FMA service center will be accepted for service when shipped
post-paid, with a copy of the original sales slip or warranty registration form, to the service station
advised by FMA, Inc.
THIS WARRANTY DOES NOT APPLY TO
1. Consequential or incidental losses resulting from the use of this receiver.
2. Damage resulting from accident, crashes, misuse, abuse, neglect, electrical surges,
reversed polarity on connectors, lightning or other acts of God.
3. Damage from failure to follow instructions supplied with the product.
4. Damage occurring during shipment of the product either to the customer or from the
customer for service (claims must be presented to the carrier).
5. Damage resulting from repair, adjustment, or any alteration to product by any one
other than an authorized FMA technician.
6. Installation or removal charges, or damage caused by improper installation or
removal.
CALL [phone] FOR INFORMATION ABOUT SERVICE AND WARRANTY REPAIRS.
OWNER’S MANUAL
INTRODUCTION:
Thank you for purchasing the FMA Direct Extreme 5 FM receiver. The new Extreme
represents the sixth generation in a history of high quality radio control receivers de-
signed by FMA, Inc. The latest trend in the industry has been the move to smaller and
smaller airborne equipment. FMA pioneered these efforts with the micro 2000, Fotress
micro, Tetra, Quantum and Magnum series receivers. By incorporating the highest
level of technology available to the R/C industry, FMA engineers are committed to pro-
viding consumers with substantial size and weight reduction while at the same time
improving performance over previous designs. This philosophy is vastly different from
other manufacturers who rush to market smaller products that are not even 1991 com-
pliant, have limited range and performance, and hence experience serious problems
when used at typical R/C fields. Extreme receivers are designed with extremely narrow
bandpass and full-range capabilities. Furthermore, because they are dual conversion,
interference rejection on all fronts is unsurpassed. You may fly your Extreme 5 in
anything from park or indoor models to sport models or helicopters to IMAA legal
quarter scale aircraft with complete confidence regardless of how many pilots are in
the air simultaneously. In addition, the new microprocessor-controlled decoder pro-
vides additional digital filtering to further improve noise immunity while at the same
time reducing overall size and weight. Available in two basic models to accommodate
FM shift, the Extreme 5 supports either positive or negative FM modulation. Heavy-
duty, SMT construction on a single, glass-epoxy P.C. board along with various other
circuit improvements make the Extreme 5 design one of the most reliable we have ever
produced.
NOTE: PLEASE READ MANUAL COMPLETELY BEFORE OPERATION
SPECIFICATIONS:
SIZE: 1.67"L X 0.80"W X 0.58"H (IN HEAT SHRINK CASE)
WEIGHT: 11 gm / 0.40 OZ.
DESIGN: DUAL CONVERSION, SUPER HETERODYNE
SPECIAL CIRCUITRY: uP CONTROLLED DECODER
CHANNELS: 1-5
MODULATION: FM / PPM (PULSE POSITION MODULATION)
FREQUENCY: R/C CH 11 - 90 - U.S. LEGAL 72, 75 MHz
ULTIMATE BANDPASS: ± 8.5 KHz @ >55 dB DOWN
USABLE SENSITIVITY: > -95 dBm
3OIP: +12 dBm
OPERATING VOLTAGE: +3.5V TO +26V DC LIMITED ONLY BY SERVO REQUIREMENTS
LEGAL USE: MEETS AMA GUIDELINES/FCC 1999 RADIATION REQ.
FMA, Inc.
5713 Industry Lane, Suite 50
Frederick, MD 21704
Sales: [phone] -Technical: [phone]
5 CHANNEL
FM DUAL
CONVERSION
SUB-MICRO
RECEIVER
5
ETREME
X

∗ FCC Information: FCC ID: KH8-T2000 - This device complies with Part 15 of the Rules.
Operation is subject to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept interference received, including interference
that may cause undesired operation.
PACKAGE CONTENTS:
1. FMA Direct Extreme 5 FM, 5 channel sub-micro receiver
2. Dealer or factory-installed channel crystal (if purchased with unit)
3. Owner's Manual
PREPARATION:
•TRANSMITTER COMPATIBILITY, POWER AND SERVO CONNECTION
Extreme 5 receivers are available in two models
to support both positive and negative modulation.
For the sake of simplicity, this manual assumes
you have purchased a 72 MHz band receiver.
TABLE 1 highlights transmitter compatibility de-
pending on the part number and what is listed on
your receiver label. If you are unsure which
model receiver you have, contact FMA Direct
immediately. Extreme receivers are designed for
use with all standard servo connectors and
support Futaba, JR, Hitec servos, and Airtronics
servos equipped with the new “Z TYPE”
connectors, as well as other brands that use
standard polarity (GROUND, PLUS, SIGNAL).
When connecting power and servos to your Ex-
treme, please refer to TABLE 2 and Figure 1 for
proper hookup of your servos. Note: with the
receiver sitting label side down, the ground
(negative) lead (marked #1 in Figure 1 and color
coded as in TABLE 2) must match up to the pin
closest to the outside edge of the receiver. No
damage will occur by plugging a servo in back-
wards, but the servo will not operate. You may
mix and match any standard type servos, but
neither may be used in combination with “Old
Style” Airtronics servos – see warning below.
When hooking up power to your receiver, you
may either connect a NiCd battery pack to any
unused channel input or use a “Y” harness to
connect the battery and a servo simultaneously
to any receiver channel.
WARNING: IF YOU INTEND TO INTERFACE AIRTRONICS SERVOS THAT USE “OLD
STYLE” (PRE-“Z TYPE”) AIRTRONICS CONNECTORS TO THE EXTREME 5, YOU
MUST UPDATE THE CONNECTOR TO THE CURRENT INDUSTRY STANDARD
POLARITY (SEE FIGURE 1) AND PROPER INDUSTRY STANDARD SHELL THICKNESS.
YOU MAY READILY CONVERT YOUR EXISTING “OLD STYLE” AIRTRONICS
CONNECTORS TO CURRENT STANDARDS 1) BY INSTALLING APPROPRIATE
ADAPTERS (FMA PN 217AJ) OR 2) BY REMOVING THE OLD CONNECTORS AND PINS
AND REPLACING THEM WITH FMA PART NUMBER SEASSYJ. EACH SEASSYJ
CONTAINS ONE JR COMPATIBLE MALE SHELL AND 3 FEMALE PINS. YOU WILL
NEED TO CRIMP THE PINS AND SOLDER THEM TO THE WIRES OF YOUR EXISTING
SERVO BRAND 1 2 3
FUTABA BLK RED WHT
JR BRN RED ORG
HITEC BLK RED YLW
TABLE 2 SERVO PLUG ORIENTATION
Figure 1 - Polarity
Part Number Extreme 5 Label ACE AIR FUT HITEC JR
705FM72F FUTABA TYPE 
705FM72J JR TYPE 

TABLE 1 TRANSMITTER COMPATIBILITY (72 MHz)
SERVO AND PLUG THEM INTO THE SHELL PROVIDED. MAKE CERTAIN THAT THE
RED WIRE (+V) GOES TO THE CENTER PIN AS ILLUSTRATED IN FIGURE 1. FMA
WILL NOT ACCEPT RESPONSIBILITY FOR ANY ATTEMPT TO USE “OLD STYLE”
AIRTRONICS CONNECTORS WITH EXTREME RECEIVERS THAT DO NOT HAVE THE
POLARITY CHANGED TO INDUSTRY STANDARDS.
•CRYSTALS
All Extreme 5 receivers support full crystal interchangability using FMA Direct Quantum or
Fortress series dual conversion crystals. The only difference between these crystals is the
size. The new Quantum series crystals are low-profile and will not stick up as high in the
receiver. Contact your local FMA Direct dealer or call FMA Direct to obtain the correct
crystal for operation with your transmitter frequency. Plug the crystal into the gold-plated
crystal sockets and secure with a piece of tape or the channel sticker provided.
INSTALLATION
Care must be taken when installing your receiver to isolate the electronics from vibration. Do this by
wrapping the receiver in 3/8” thick foam rubber. Restrain the foam-packed receiver using Velcro or
a rubber band if necessary. NOTE: FAILURE TO USE FOAM RUBBER AS DESCRIBED ABOVE
DURING INSTALLATION VOIDS PRODUCT WARRANTY. Extend the antenna to its full length.
Do not coil the antenna up or range will be shortened. If you are installing the Extreme 5 in a small
model and you require a shorter antenna, you may cut off a portion of the 39.75” antenna without
de-tuning the receiver; a unique feature of FMA Direct receivers. Reducing antenna length will
reduce range, however. Proceed carefully, removing only a short amount at a time and be certain
to ground range check the receiver with each incremental reduction in antenna length. NEVER
CUT THE ANTENNA SHORTER THAN 18 INCHES! A special note to helicopter pilots concerning
standard FM receivers and antenna placement: FMA Direct receivers are tested thoroughly in all
types of models including helicopters. Helicopters often create a challenge because they generate
RF noise and heavy vibration from fast-moving parts. In order to improve reception in a helicopter,
it is recommended that you route the antenna of the receiver as far away from the tail boom as
possible. This is particularly true of carbon-fiber booms. Nylon push rod material mounted to the
underside of the skids provides a good channel through which to route the antenna. When hooking
up a servo to your receiver, use TABLE 1 and FIGURE 1 to check its plug wire color orientation.
RANGE TEST
To assure proper performance, the Extreme 5 series receiver must be range tested with the "host"
transmitter. The major reason for this important test is that over time, all R/C transmitters are
susceptible to de-tuning and frequency “drift”. To ensure the utmost in secure RF reception, current
technologies for narrow-banding used in FMA designs can actually place a higher demand on
transmitters. Power level and frequency accuracy of your transmitter are more important than ever
before. Therefore, for the initial range check and in rare cases when you suspect degradation of
performance from your R/C system, FMA would like to suggest the following guidelines: Begin by
placing the receiver on a cardboard box or another non-metallic surface to elevate it about 2 feet off
the ground. Connect only one servo and the battery direct. Do not install a switch harness for the
initial range test because switch harnesses are often the cause of poor range. Perform the range
test with the receiver antenna fully extended VERTICALLY into the air on a dowel rod or the like,
and the transmitter antenna collapsed. Apply power and walk away from the receiver moving one
stick on the transmitter. You should obtain at least 200 feet of line-of-sight ground range if
everything is operating properly. If any loss of servo control occurs, the system must be calibrated
by an FMA service station. CALL [phone] for FMA Direct technical assistance. In certain
cases, the FMA service station may ask you to send in your transmitter along with your receiver.
ACCESSORIES:
Aileron extension cables, Y-harness, switch harness, and numerous other accessories as well as a
full line of servos, batteries, chargers, and ARF airplanes are available for use with your FMA
receiver either direct or from your local FMA dealer.