Spektrum SPMVR5203 User Manual

Applications

Spektrum’s Dual Output Step Down Regulator is primarily designed for use with gyros and tail rotor servos in helicopters. Most brands of gyros/ tail rotor
servos have voltage limits of 6 volts or less. The Dual Output Regulator installs between the receiver and the gyro in the rudder and gain channels and
regulates the voltage to the gyro and tail rotor servo to a constant 5.2 volts. This allows the rest of the system to operate using higher voltage, typically
5-cell NiMH 6 volts or even 2-cell LiPo 7.4 volts, if your servos are rated for such operation..

Additional Applications

We’ve also discovered there are many other devices that are typically used in models which have voltage limits that the Dual Output Regulator is ideal for.
Some brands of retract servos (including the JR791) have a limited voltage range and installing the Dual Output Regulator inline between the servo and the
receiver allows the retract servo to function properly.

Important

The Dual Voltage Regulator is limited to 2 amps of continuous current. It is designed to install between the receiver and the gyro, operating the gyro and tail
rotor servo only (or other control devices like a retract servo, electronic switch, etc.).
It is not intended to be installed between the battery and the receiver to power the entire system.

SPECIFICATIONS

Installation

1. Mount the regulator using double-sided foam tape in a convenient location.
Two 6-inch leads are provided. If necessary, servo extensions can be used to mount the
regulator further away from the receiver.

2. Install these leads in the input ports of the regulator, noting the polarity and connect
the negative (brown) wire toward the edge of the case to the corresponding Rx channel.

3. Install the open end of the leads in the desired receiver channel ports. Typically for a gyro
installation this would be the Rudder and Aux 1 (or Gear) channels in the receiver.

4. From the gyro, install the Rudder Lead and the Gain Lead in the out ports of the regulator.
The Rudder Lead should go in the port next to the Input Lead that is plugged into the Rudder
Channel and the Gain Lead should be installed next to the Gear Lead. See the diagram at right.

5. Turn on the system. An amber light should turn on, indicating the system is powered.
Check Servo and Gain operation.

Note: If the leads are plugged in the wrong places (input vs. output) no damage
will occur on power up. The system simply won’t operate.

Maximum Current Check

It’s normal for the regulator to become warm during operation. Most gyros/ tail rotor servos operate well below the 2-amp range even in other applications that
may heavily load the regulator. The most accurate way to determine peak operating current is to use a current meter, such as the Hangar 9 (HAN172), inline
between the servo and the regulator and operate the servo with a simulated flight load. For a quick check to determine if the regulator is operating near it’s
maximum current/ temperature range, operate the system continuously for 10 minutes, placing a typical load on the servos. Now press on the center of the
case near the amber light. If the case is soft, you are near the maximum operating current of the regulator.

Spektrum VR5203 Dual Output Regulator Instructions

© 2007 DSM and DSM2 are trademarks or registered trademarks of Horizon Hobby, Inc. Spektrum is used with permission of Bachmann Industries, Inc. Spektrum radios and accessories are exclusively available from Horizon Hobby, Inc.

Type:
Voltage Input:
Output Voltage:
Continuous current @ 8.4V:
Dimensions WxLxH:
Weight:

Dual input/output step down linear voltage regulator

5.5 to 10 volts (4–8 cell NiCd/NiMH or 2-cell LiPo)

5.2 volts

2.0 amps (3-amp peak)
23 x 32 x 12mm .85 x 1.30 x .50 in
7 grams/ .3 oz

To Receiver

Rudder Channel

To Gyro

Rudder Channel

To Receiver
Gain Channel

To Gyro

Gain Channel

Amber light

Warranty Inspection and Repairs

To receive warranty service, you must include your original sales receipt verifying the proof-of­purchase date. Provided warranty conditions have been met, your Product will be repaired or
replaced free of charge. Repair or replacement decisions are at the sole discretion of Horizon Hobby.

Non-Warranty Repairs

Should your repair not be covered by warranty the repair will be completed and payment will be
required without notification or estimate of the expense unless the expense exceeds 50% of the
retail purchase cost. By submitting the item for repair you are agreeing to payment of the repair
without notification. Repair estimates are available upon request. You must include this request
with your repair. Non-warranty repair estimates will be billed a minimum of ½ hour of labor. In
addition you will be billed for return freight. Please advise us of your preferred method of payment.
Horizon accepts money orders and cashiers checks, as well as Visa, MasterCard, American
Express, and Discover cards. If you choose to pay by credit card, please include your credit card
number and expiration date. Any repair left unpaid or unclaimed after 90 days will be considered
abandoned and will be disposed of accordingly. Please note: non-warranty repair is only available
on electronics and model engines.

United States:

Electronics and engines requiring inspection or repair should be shipped to the following address:

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822

All other products requiring warranty inspection or repair should be shipped

to the following address:

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822

Please call 877-504-0233 with any questions or concerns regarding this product or warranty.

European Union:

Electronics and engines requiring inspection or repair should be shipped to the following address:

Horizon Hobby UK

Units 1-4 Ployters Rd

Staple Tye

Southern Way

Harlow

Essex CM18 7NS

England

Please call [phone] or [e-mail] with any questions or concerns
regarding this product or warranty.

FCC Information

This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

Caution: Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

This product contains a radio transmitter with wireless technology which has been tested and found
to be compliant with the applicable regulations governing a radio transmitter in the 2.400GHz to

2.4835GHz frequency range.

The associated regulatory agencies of the following countries recognize the noted certifications for
this product as authorized for sale and use:

Instructions for Disposal of WEEE by Users in the European Union

This product must not be disposed of with other waste. Instead, it is the user’s responsibility to
dispose of their waste equipment by handing it over to a designated collection point for the recycling
of waste electrical and electronic equipment. The separate collection and recycling of your waste
equipment at the time of disposal will help to conserve natural resources and ensure that it is
recycled in a manner that protects human health and the environment. For more information about
where you can drop off your waste equipment for recycling, please contact your local city office, your
household waste disposal service or where you purchased the product.

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 year from the date
of purchase by the Purchaser.

Limited Warranty

(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
warranty claims. Further, Horizon reserves the right to change or modify this warranty without notice
and disclaims all other warranties, express or implied.

(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED,
ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
OF THE PRODUCT. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED
THAT THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S
INTENDED USE.

(c) Purchaser Remedy- Horizon’s sole obligation hereunder shall be that Horizon will, at its option,
(i) repair or (ii) replace, any Product determined by Horizon to be defective. In the event of a defect,
these are the Purchaser’s exclusive remedies. Horizon reserves the right to inspect any and all
equipment involved in a warranty claim. Repair or replacement decisions are at the sole discretion
of Horizon. This warranty does not cover cosmetic damage or damage due to acts of God, accident,
misuse, abuse, negligence, commercial use, or modification of or to any part of the Product. This
warranty does not cover damage due to improper installation, operation, maintenance, or attempted
repair by anyone other than Horizon. Return of any goods by Purchaser must be approved in writing
by Horizon before shipment.

Damage Limits

HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH
THE PRODUCT, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY. Further, in no event shall the liability of Horizon exceed the individual price of
the Product on which liability is asserted. As Horizon has no control over use, setup, final assembly,
modification or misuse, no liability shall be assumed nor accepted for any resulting damage or injury.
By the act of use, setup or assembly, the user accepts all resulting liability.

If you as the Purchaser or user are not prepared to accept the liability associated with the use of this
Product, you are advised to return this Product immediately in new and unused condition to the place
of purchase.

Law: These Terms are governed by Illinois law (without regard to conflict of law principals).

Safety Precautions

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. The Product 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 injury.

Questions, Assistance, and Repairs

Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once
assembly, setup or use of the Product has been started, you must contact Horizon directly. This will
enable Horizon to better answer your questions and service you in the event that you may need any
assistance. For questions or assistance, please direct your email to productsupport@horizonhobby.
com, or call 877.504.0233 toll free to speak to a service technician.

Inspection or Repairs

If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization
(RMA). Pack the Product securely using a shipping carton. Please note that original boxes may be
included, but are not designed to withstand the rigors of shipping without additional protection.
Ship via a carrier that provides tracking and insurance for lost or damaged parcels, as Horizon
is not responsible for merchandise until it arrives and is accepted at our facility. A
Service Repair Request is available at www.horizonhobby.com on the “Support” tab. If you do not
have internet access, please include a letter with your complete name, street address, email address
and phone number where you can be reached during business days, your RMA number, a list of
the included items, method of payment for any non-warranty expenses and a brief summary of the
problem. Your original sales receipt must also be included for warranty consideration. Be sure your
name, address, and RMA number are clearly written on the outside of the shipping carton.

USA Canada Belgium

Denmark France Finland

Germany Italy Netherlands

Spain Sweden UK

11227.1