Manual Gemini 7202 (page 5 of 9) (English)

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ULTRASONIC MODULE DESCRIPTION

GEMINI ref. 5123.

The ultrasonic module ref. 5123 protects the vehicle, detecting the door opening or the movements

inside the passenger’s compartment.

FITTING INSTRUCTIONS.

Connect the ultrasonic module to the alarm system wiring harness then put the connectors of

the ultrasonic cells in the suitable socket: RED for the TX cell and WHITE for the RX cell.

SENSITIVITY ADJUSTMENT.

Lower one of the front windows (approximately 20-cm).

Adjust the ultrasonic sensor sensitivity to a minimum level.

With the doors completely closed, arm the alarm pressing twice on the transmitter 2 button.

Put one hand through the open window and move it. If the sensitivity is properly adjusted the

LED on the sensor lights. Otherwise, it is necessary to increase the sensitivity.

TECHNICAL DATA

Working Voltage

9÷16VDC

Current absorption

2,5 mA

Working temperature

-30°C +85°C

DESCRIPTION OF THE MODULE GEMINI 7059.

GEMINI 7059

protects the vehicle detecting attempts to break into the passengers

compartment by the emission of an electromagnetic field (frequency = 2,45 GHz).

The working of the sensor is based on the reflection of the electromagnetic waves when a

object, made of a conductive material, is located on the field.

The measurement of the reflected waves can detect the intrusion and then trigger the alarm

device connected to the sensor.

GEMIN 7059

is insensitive to air movements (wind, thermal air drift, etc.), for this reason it’s

suitable to be fitted on pick-up vehicles, convertible cars and vehicle equipped by a sliding

sunroof.

Due to the fact that the insulating materials are transparent to the electromagnetic waves it’s

possible to fit the sensor module in a hidden position, e.g. under the passengers compartment

carpet.

FITTING INSTRUCTIONS.

In order to obtain the correct working of the sensor module it’s very important to identify the

best fitting position depending on the vehicle model.

In any case, it’s important to remember that, the complete protection of the vehicle internal

space can not be obtained using a high-frequency sensor module.

The sensitivity adjustment must be done in order to avoid false alarm triggering, due to

objects in movement outside the vehicle (e.g. people, other vehicles or motorbikes).

To increase the false alarms protection it’s important to comply the following fitting rules :

a) the connection cable of the sensor must be fitted and routed far from the module case.

b) the module must be fitted far from coin holders or glove compartments.

c) avoid all metal mobile objects in the passengers compartment.

To find the proper fitting position, please see the fitting diagram contained in this fitting

manual.

ELECTRIC CONNECTIONS.

The connection of the module to the alarm system is very easy as the wiring harness is

equipped with a

proper connector.

SENSITIVITY ADJUSTMENT.

GEMINI 7059

is provided by a sensitivity adjustment control, by this it’s possible to set the

sensor sensitivity from a MINIMUM value (NOT ZERO) to a MAXIMUM value.

To help the adjustment operation the module is provided by a RED led located on the top side

of the sensor case. This led is lighted for 4 sec. when an alarm condition is detected. (NOTE :

between an alarm condition and the following is present a delay time of 5 sec.).

ADJUSTMENT PROCEDURE :

1) Set the adjustment control to the MAXIMUM value (clockwise direction).

2) Close all doors, windows, boot and bonnet, then arm the alarm unit connected to the

sensor module and wait for the end of the arming delay time, or set on the DIAGNOSTIC

MODE

3) Move the hands near the vehicle windows (lateral, front and rear) and make sure that the

sensor does not activate.

4) If the sensor activate reduce the value of the adjustment control (anti-clockwise

direction), then repeat the test described on the point 3).

5) If the test result is positive, (no false alarms detected moving the hands near the

windows), disarm the alarm unit and open one of the front windows.

6) Arm the alarm unit again, or set on the DIAGNOSTIC MODE, and check the correct

alarm triggering moving an arm inside the passengers compartment.

Pink

Brown

Ultrasonic module

White

connector

Red

connector

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Gemini 7202 Manual

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