Gyro System
SRVS G490T
SRVS gyro system, Order No. 5137
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Modifications reserved; errors and printing errors excepted
ID# 47820
5/03
Operating instructions
Please note that the G490T system has been specially developed for use with digital servos,
and the DS-8700G super-servo in particular. Although the G490T features a switch for "normal"
signal rate, and therefore can also be connected to conventional servos, the system’s optimum
performance can only be achieved with suitable high-performance servos.
For this reason we strongly recommend that you use the DS-8700G servo, Order No. 5156,
which is specially designed to match this type of gyro system.
1. For your own safety please read the following notes
carefully
:
WARNING: handling this gyro incorrectly may result in serious personal injury or damage
to property!
Never use any power source other than the stated 4.8 V NC batteries, otherwise you run the risk
of fire and even explosion; for example, cables of small cross-section may overheat when
carrying heavy currents.
Never short-circuit the connector contacts with any metallic object. You run the risk of fire and
explosion, not to mention damage to the gyro.
Never dismantle or modify the unit in any way, otherwise you run the risk of fire or damage to
the unit.
Never use the system in conjunction with any equipment other than the stated JR servos and
other JR radio control system components, or you run the risk of fire, injury and system failure.
Always check the direction of operation of the gyro system. If you set the gyro to counteract
fluctuations in the wrong direction, the model will almost certainly be uncontrollable in the air.
Never use the system for any purpose other than for model aircraft - fixed-wing and helicopters -
as employed for hobby purposes, otherwise you run the risk of malfunction and system failure.
Always ensure that the airborne power sources (batteries) are adequately charged before flying;
if a battery becomes flat in flight, you will inevitably lose control of the model.
Never operate the system in weather conditions in which the gyro could become damp or wet,
otherwise you run the risk of malfunction or system failure.
Always check that the surface in the model to which the gyro system is attached is dry, com-
pletely clean and free of grease. Fix the unit in place carefully using the double-sided foam tape
supplied, and check from time to time that it is still secure.
If the gyro system comes loose, you will lose control of the model!
Always mount the gyro system in the location recommended by the helicopter manufacturer, or
in a location where vibration is at a minimum. Powerful vibration can easily reduce the gyro’s
performance, and may even lead to system malfunction or failure.
Never subject the gyro system to extremely high or low temperatures, water, strong vibration or
high humidity, otherwise you run the risk of malfunction, damage, reduced performance and
system failure.
