AMB MYLAPS Manuale utente

MYLAPS LOOP TESTER

MYLAPS 2-Way Decoder

Instruction Manual

MYLAPS SPORTS TIMING BY AMB I.T. AND CHAMPIONCHIP

Content

Contact information.........................................................................

1. Features.....................................................................................

1.1 Introduction.....................................................................

1.2 Buttons............................................................................

1.3 Power..............................................................................

1.4 Menu...............................................................................

1.4.1 Activating the menu..................................................

1.4.2 Cycling through the menu..........................................

1.4.3 Selecting an operation from the menu........................

1.5 Loop Transmitter...............................................................

1.6 Loop Receiver...................................................................

2. Operation....................................................................................

2.1 Introduction.....................................................................

2.2 Typical Signal Levels.........................................................

2.3 Testing the connection box................................................

2.4 Checking for a loop wire break..........................................

3. Guarantees & Warranties.............................................................

4. CE Regulation.............................................................................

Contact Information

MYLAPS EMEA Ofce Haarlem MYLAPS Americas Ofce

Haarlem Atlanta

The Netherlands USA

Tel: +31 23 7600 100 Tel: +1 678 816 4000

E-mail: [email protected] E-mail: info.americas@mylaps.com

MYLAPS Japan Ofce MYLAPS Asia Pacic Ofce

Tokyo Sydney

Japan Australia

Tel: +81 3 5275 4600 Tel: +61 2 9546 2606

Email: info.japan@mylaps.com Email: info.asia.pacic@mylaps.com

MYLAPS Asia Ofce

Kuala Lumpur

Malaysia

Tel: +60 356131235

Email: info.asia@mylaps.com

www.mylaps.com

This publication has been written with great care. However, the manufacturer

cannot be held responsible, either for any errors occurring in this publication or

for their consequences.

The sale of products, services of goods governed under this publication are

covered by MYLAPS’s standard Terms and Conditions of Sales and this product

manual is provided solely for informational purposes. This publication is to be used

for the standard model of the product of the type given on the cover page.

MYLAPS Manual: MYLAPS LoopTester/2013-08

1. Features

1.1 Introduction

The LoopTester is a versatile device that measures the signal strength emitted by

a loop and offers support in detection of a damaged coax cable and establishing

the location of a wire break in a loop.

1.2 Buttons

The LoopTester features two buttons for controlling the device.

1. Power/Menu button

2. Set/Select button

1.3 Power

To switch the LoopTester on or off, please follow the following instructions:

- Switch on: Press the “Power” button ( ) for more than 1 second.

- Switch off: Press the “Power” button ( ) for more than 2 seconds.

The illumination of the display is switched off automatically 1 minute after the

last time a switch has been pressed. In order to re-illuminate the display, shortly

press the “Set” button ( ).

The LoopTester is completely switched off automatically 10 minutes after the

last time a switch has been pressed.

When the LoopTester is switched on a splash screen is shown (gure 1). This

splash screen shows the state of the battery. Battery life depends on the type

and make of the used battery, but ball-park gures for a regular 9V alkaline

battery are:

Storage: >5 years•

Operational with display de-illuminated: ~1 month•

Operational with display illuminated: ~1 day•

When the battery has run out of power it needs to be replaced with a fresh

9V battery (Figure 2). The battery compartment is located at the rear of the

LoopTester and it can be reached by removing the rubber protective cover of

the LoopTester.

Fig. 1: Splash Screen with Battery Status Indication Fig. 2: 9V Alkaline Battery

1.4 Menu

1.4.1 Activating the menu

If the LoopTester is switched on, the menu is activated by pressing the “Menu”

button ( ). Any current activity that the LoopTester might be performing at

that moment will be terminated.

1.4.2 Cycling through the menu

If the menu is visible, pressing the “Menu” button ( ) cycles through the

menu. Every time the “Menu” button ( ) is pressed, the next menu item will

be highlighted (Figure 3 & Figure 4).

1.4.3 Selecting an operation from the menu

As long as the menu is visible, a menu item will be highlighted. When the “Select”

button ( ) is pressed, the operation associated with the highlighted menu item

will be started (Figure 3 and Figure 4).

Fig. 3: Select Transmitter Fig. 4: Select Receiver

1.5 Loop Transmitter

When the Loop Transmitter function is chosen, the LoopTester emits a 6.8MHz

signal to the BNC connector. The display continuously reports the state of the

connection to the loop. Three states can be detected by the LoopTester:

Coax Ok: Connection box properly detected.1.

Coax Open: No circuit detected; coax cable not attached, coax2.

cable damaged or connection box damaged.

Coax Short: Short circuit detected; coax cable or connection3.

box damaged.

As long as a loop with a connection box is properly connected to the BNC

connector the display shows the message “Coax Ok” (Figure 5). Additionally

the display shows the type of loop that is detected (“TranX” or “TranX/ChipX”).

When no coax cable is connected to the BNC connector or when the coax loop

to the connection box is not closed, the message “Coax Open” is shown on the

display (Figure 6). When a coax cable is connected, but suffering from internal

damage in the form of a short circuit, the message “Coax Short” is shown on

the display (Figure 7).

Fig. 5: Proper Connection Fig. 6: Open Circuit

Fig. 7: Short Circuit

1.6 Loop Receiver

When the Loop Receiver function is chosen, the LoopTester is tuned to receive

a 6.8MHz signal. The display reports the strength of the received signal (Figure

8). The received signal strength is reported in three ways:

Current absolute strength1.

Historic absolute strength2.

Current relative strength3.

The current absolute strength is shown in the top right corner of the display.

The historic absolute strength is shown in a running histogram that reports the

strength of the received signal in the most recent 10 seconds. The current relative

strength is shown in the bottom left corner of the display.

Fig. 8: Signal Receiving

2. Operation

2.1 Introduction

A typical way of testing a loop requires 2 LoopTester devices and consists of the

following steps:

Connect LoopTester 1 to a loop.1.

Set LoopTester 1 to Transmit mode.2.

Check whether LoopTester 1 is properly connected to the3.

connection box.

Set LoopTester 2 to Receive mode.4.

Check the received signal strength in order to detect the5.

location of a possible loop wire break.

These steps lead to the setup depicted in Figure 9.

Fig. 9: Typical Test Set-up

2.2 Typical Signal Levels

Typical signal levels for a correctly functioning loop are approximately:

Near the coax cable: -55 dBm•

Near the connection box: -40 dBm (close to the loop wire)•

Near the End box: -50 dBm (close to the loop wire)•

Anywhere near the loop: -55 dBm(5cm distance from the wire)•

2.3 Testing the connection box

If the LoopTester is properly connected to the connection box and the LoopTester

is set to transmit mode, the message “Coax Ok” is shown on the display (Figure

10). If this message cannot be seen, but the message “Coax Open” or “Coax

Short” is displayed, the LoopTester is not properly connected to the connection

box of the loop or the coax cable might be damaged.

Fig. 10: LoopTester Properly connected

2.3 Checking for a loop wire break

If the LoopTester is properly connected to the connection box and the loop is

free of any wire breaks, the LoopTester will receive a high signal level when the

LoopTester is held near any part of the loop (Figure 11).

Fig. 11:

High Signal Level

Indice

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