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XP70 Instruction Manual
manual you will find the specifications for the transmitter
and its included accessories. In addition, guidelines
for installation have been included. A blank data sheet
has been included at the end of each section. Once all
data has been input for a particular model, it is highly
recommended that you also record it on a copy of the data
sheet provided. If you want to make changes to the current
settings, this step will save you a great deal of time.
For your convenience, this manual is arranged with
separate sections for airplane and helicopter software
functions: Airplane Programming: Pages through
6 Helicopter Programming: Pages 66 through 10
Programming functions are discussed in the same order
that they appear on the radio. An explanation of the
use and purpose of each feature is provided, followed
by an illustration of its LCD display. In the front of this
Section 1: Using This Manual
XP7202 Transmitter
The XP70 synthesized transmitter allows onscreen
channel selection of channels 1 through channel 60 via
the computer. The system prevents accidental turn-ons
by requiring acknowledgement of the selected channel
before a signal is transmitted. The system incorporates a
hi-resolution dot matrix LCD display offering sophisticated
graphics that are easy to read and understand. Two-model
type programming offers airplane and helicopter pilots
programming options that will meet the most demanding
modelers’ needs. Control sticks are adjustable for spring
tension and length. Twenty-model memory storage
capacity allows programming for up to twenty separate
helicopters or airplanes or you can program more than one
setup for a single aircraft. Two versions of the transmitter
are available: Airplane and Helicopter. The switch
positions are optimized for each model type, however, the
programming is identical in both versions.
R790 ScanSelect PCM Receiver
The R790 ScanSelect™ is a high-performance synthesized,
single-conversion receiver with 10KHz super narrow band
ABC&W circuitry.
The ScanSelect synthesized frequency selections system
allows access to the user of channels 1–60 without
changing any crystals.
A narrow band ceramic filter for high-signal selectivity
assists in rejecting cross-modulations from other common
radio frequencies, such as RC transmitters or local paging
systems.
This receiver features Direct Servo Control (DSC) for
control of servos without radio frequency output.
The receiver has low current consumption.
The R790’s Slimline design allows it to fit into most model
applications.
DS821 Servo
The DS81 sport digital servo features:
• Ball bearing outshaft support
• A zero deadband amplifier
• New improved plastic gear material
• Improved accuracy and higher holding torque,
characteristic of digital servos
• Low current drain
• -pole ferrite cored motor