DETRUM GY48V - User Manual

GY48V INSTRUCTION MANUAL
GY48V is a gyro with dual rate and head lock function, which is designed for helicopters planes&cars especially.
GY48V adopts AVCS (Angular Vector Control System ), which makes the function lock more outstanding and steady.
AVCS system: since rudder trim changes caused by wind and other meteorological changes, and varieties of the helicopter
attitude changes are automatically cancelled, tail rudder operation becomes easy, making it perfect for 3D flight.
GY48V specification:
Digital proportional R/C system
Dimensions(mm): 28*28*20
Operating voltage: 4.8V ~ 6V
Operating temperature:-10°c~ +45°c
Operating current: 80mA
Functions:
Minimizes changes in an aircraft's attitude by wind etc.
Angular acceleration commands used.
Sensor vibration proofing.
Simple sensitivity adjustment.
Open the package of GY48V, you will find the part sets:
Double-sided tape
GY48V Functions explanation:
Gyro Operation
Direction Switch
LED
Control Delay Trimmer
Limit Trimmer
DS mode switch
Rudder input connector
(Black plug)
Sensitivity Switching
Connector(Red plug)
Rudder Servo connector
LED Display
Gyro operation state
Rapid flash
Indicate that data is being initialized after you turn
on the power.
Steady light Indicate that the gyro is operating in the AVCS mode.
OFF
Indicate that the power is off, or the gyro is operating
in the normal mode.
Slow flash
Indicate that the gyro has not received any signal of
rudder operation from the transmitter, the rudder
servo cannot operate at this time.
Intermittent flash
Indicate that open power in the normal mode, but gyro
can’t initialize the data correctly at that time, please
switch the gyro sensitivity switch to the AVCS mode,
and close the power of transmitter, then open it again,
when in AVCS mode, rudder control signal currently
received is different from neutral signal in the gyro.
Double flash
It happens in the following circumstances:
the rudder stick is operating,
the neutral position of tail rudder is moving,
and you have to readjust and set it.
Commodity name
Functions explanation
DS mode switch
Digital servo mode switch. When using a digital servo, please set the switch to the on position. While using the normal one, set it to the off
position, the servo will be destroyed.
Gyro operation direction switch
Switch control direction of the gyro, it must be switched correctly according to the rotation direction of the main rotor on the helicopter and the
direction of the rudder linkage.
Control delay trimmer
Adjust operation speed of rudder control signal. If using slower speed rudder, please turn the knob clockwise to increase delay time, then you
can stop tracing. If using high speed digital servo, please turn the knob anticlockwise to the position of “0” .
Limit trimmer
Rudder input connector
Connect to the receiver rudder channel(CH4)
Sensitivity switching connector
Connect to the receiver sensitivity switching channel(normally Ch5). This connector can be simultancously used to switch the sensitivity of
gyro between the AVCS and normal modes. Since this connector is a single line, do not pull it forcefully.
Explanation for parts name and functions:
Rudder servo connector
Adjust operation speed of rudder control signal. If using slower speed rudder, please turn the knob clockwise to increase delay time, then you
can stop tracing. If using high speed digital servo, please turn the knob anticlockwise to the position of “60
0
” .
Connect to the rudder servo.

Summary

GY48 V Specifications and Functions

GY48 V Specifications

Details the dimensions, operating voltage, temperature range, and current consumption of the GY48V gyro.

Core Functions

Outlines the primary functions including attitude stabilization, angular acceleration commands, and sensitivity adjustment.

GY48 V Functions and Components Explanation

LED Display and Operation States

Explains the meaning of LED flashes (Rapid, Steady, Slow, Double) and gyro operation states (AVCS, Normal, Off).

DS Mode Switch

Digital servo mode switch; set ON for digital, OFF for normal servos to prevent damage.

Gyro Operation Direction Switch

Controls gyro direction based on rotor rotation and linkage direction for correct tail control.

Control Delay Trimmer

Adjusts rudder control signal speed and delay time to prevent tracing issues.

Limit Trimmer

Adjusts rudder servo operating angle to prevent linkage strike and protect the servo.

Rudder Input Connector

Connects to the receiver's rudder channel (typically CH4) for signal input.

Sensitivity Switching Connector

Connects to a receiver channel to switch gyro sensitivity between AVCS and normal modes.

Rudder Servo Connector

Connects the GY48V gyro output to the helicopter's rudder servo.

GY48 V Installation and Setup

Helicopter Installation Guidelines

Mounts gyro perpendicular to main shaft using tape; maintain 10cm distance from electric motors for interference.

GYRO Connection Diagram

Illustrates connections for receiver sensitivity, receiver rudder channel, and rudder servo.

Servo Selection

Recommends digital servos for precision; set DS mode switch accordingly to avoid servo damage.

Gyro Operation Direction Check

Verify gyro direction by moving the helicopter head; switch direction if linkage moves incorrectly.

Tail Rudder Servo Travel Adjustment

Adjust limit trimmer so servo angle doesn't strike linkage; setting too low affects performance.

AVCS Mode Adjustment

Set delay time trimmer to '0' for digital servos; adjust for normal servos based on detailed facts.

DETRUM GY48V Specifications

General

Brand	DETRUM
Model	GY48V
Category	Remote Control
Language	English