Bosch ISW-BHB1-WX Service-Handbuch

TECHNICAL BULLETIN

Intrusion wLSN Wireless Devices

Signal-to-Noise Ratio Values March 4, 2010

Issue Severity: Products Affected:

High: Act immediately

Medium: Bosch Security Systems, Inc.

strongly recommends you take the action(s)

described below.

Low: Advisory

•wLSN Hub (ISW-BHB1-WX)

•wLSN Installation Tool

(ISW-BIT1-HAX, -HBX, -HCX)

•Compatible wLSN Devices

1.0 Issue

The Signal-to-Noise Ratio (SNR) recommendations that are shown in the wLSN Reference Guide

(P/N: F01U009440) do not adequately ensure a trouble-free wireless installation in certain European markets

where multi-path signal fading might be present. Table 1 shows the SNR values that are currently published in

the reference guide.

Table 1: SNR Values using wLSN Hub (ISW-BHB1-WX)

Signal-to-Noise Ratio Signal Strength

<9 dB Unacceptable

9 dB Marginal (not recommended)

13 dB Acceptable

16 dB Good

20 dB Very good

22 dB Excellent

When the SNR values shown in Table 1 are used to measure signal strength, signal strength can fluctuate

significantly in locations where multi-path signal fading is present. As a result, the device might not be able to

communicate with the hub. If a communication failure occurs and is not resolved within the defined supervision

window, the control panel sends a missing device report to the central monitoring station.

130 Perinton Parkway, Fairport, NY 14450 USA

www.boschsecurity.com

TBI 07-31-09_wLSN_SRN-02

Technical Bulletin

3/201

wLSN Wireless Device

Page 2 of

2.0 Resolution

For more accurate measurements, use the SNR values as shown in Table 2 when performing an RFSS test.

Use the wLSN Installation Tool only in Mode 3. Do not use the Installation Tool in Modes 1 or 2,

and do not use the individual wLSN devices to determine an acceptable SNR. The SNR

measurements in Modes 1 and 2 and directly from the devices do not correspond to the

recommended values indicated in Table 2.

Table 2: Revised SNR Values using wLSN Hub (ISW-BHB1-WX)

Signal-to-Noise Ratio Signal Strength

<30 dB Unacceptable

30 dB Marginal (not recommended)

35 dB Acceptable

40 dB Good

45 dB Very good

50 dB Excellent

To ensure that wLSN devices are operating at acceptable SNR values:

1. Connect to the control panel using a telephone.

Refer to the control panel documentation for connection options.

2. When prompted, enter the installer passcode.

3. Press [1] to enter the System Maintenance Menu, and then press [6] to enter the Wireless Configuration

Menu.

4. From the Wireless Configuration Menu, press [7]. When the control panel announces “Enter the number of

the programming item,” press [2] for signal strength.

5. When the control panel asks for a point number, press [0][1] to [3][2] for Points 1-32, or [3][5] to [3][8] for

Outputs 5-8.

6. After a point or output number is entered, the hub communicates with the selected device to retrieve the

signal strength. The control panel announces the signal strength as two alphanumeric characters. For

example, “3 5.” Refer to Table 3 to cross reference the spoken value to an SNR value.

Table 3: SNR Values from the Control Panel

Control Panel Value SNR Signal Strength

01 - 09 2 dB – 14 dB

0A – 0F 15 dB – 23 dB

10 – 13 24 dB – 29 dB

Unacceptable

14 – 16 30 dB – 33 dB Marginal

17 – 1A 35 dB – 39 dB Acceptable

1B – 1D 41 dB – 44 dB Good

1E – 20 45 dB – 48 dB Very good

21 – 32 50 dB – 75 dB Excellent

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Bosch Sicherheitssystem Handbücher

Bosch

Bosch Solution 2000 Series Betriebsanleitung

Bosch

Bosch Plena BGM Source Bedienungsanleitung

Bosch

Bosch Solution 16i Bedienungsanleitung

Bosch

Bosch CP050B Anleitung zur Verwendung

Bosch

Bosch PVA-1EB Bedienungsanleitung

Bosch

Bosch Solution 144 Bedienungsanleitung

Bosch

Bosch NDA-U-PA0 Bedienungsanleitung

Bosch

Bosch MIC IP starlight 7000i Bedienungsanleitung

Bosch

Bosch RF1100E Bedienungsanleitung

Bosch

Bosch D623 Series Bedienungsanleitung

Bosch

Bosch DIP-7040-00N Bedienungsanleitung

Bosch

Bosch Dinion LTC 0385 Bedienungsanleitung

Bosch

Bosch SOLUTION 3000 Bedienungsanleitung

Bosch

Bosch DIP-2040-00N Bedienungsanleitung

Bosch

Bosch Security System Bedienungsanleitung

Bosch

Bosch UEZ Bedienungsanleitung

Bosch

Bosch LTC 8850 Series Bedienungsanleitung

Bosch

Bosch Carephone 61 Bedienungsanleitung

Bosch

Bosch HSG9483 Series Bedienungsanleitung

Bosch

Bosch LTC 8540/00 Bedienungsanleitung

Bosch

Bosch Solution 6000-IP Bedienungsanleitung

Bosch

Bosch FNM-320 Series Bedienungsanleitung

Bosch

Bosch AMAX 2100 Bedienungsanleitung

Bosch

Bosch Security Escort SE2000 Series Installationsanleitung

Beliebte Sicherheitssystem Handbücher anderer Marken

Inner Range

Inner Range Concept 2000 Bedienungsanleitung

Climax

Climax Mobile Lite R32 Montageanleitung

CADDX

CADDX NX-6 Bedienungsanleitung

FBII

FBII XL-31 Series Bedienungsanleitung

Johnson Controls

Johnson Controls PENN Connected PC10 Bedienungsanleitung

Aeotec

Aeotec Siren Gen5 Bedienungsanleitung

Blaupunkt

Blaupunkt SA 2700 Bedienungsanleitung

IDEAL

IDEAL Accenta Betriebsanleitung

AJAX

AJAX DoubleButton Bedienungsanleitung

Swann

Swann SW-P-MC2 Bedienungsanleitung

Ecolink

Ecolink Siren+Chime Bedienungsanleitung

Digital Monitoring Products

Digital Monitoring Products XR150 Bedienungsanleitung

EDM

EDM Solution 6+6 Wireless-AE Bedienungsanleitung

Highway Safety Group

Highway Safety Group EA401 Bedienungsanleitung

Siren

Siren LED GSM Bedienungsanleitung

Detection Systems

Detection Systems 7090i Montageanleitung

Se-Kure Controls

Se-Kure Controls MicroMini SK-4841 Bedienungsanleitung

Siemens

Siemens FDM273 Bedienungsanleitung