Field Strength Measurement With Radio Test Device Dzw 1171 - Bosch LSN Product Documentation

Product Documentation of the LSN Radio Fire Detection System

3.3. Field strength measurement with radio test device DZW 1171

D Switch on modules A and B.
⇒ The LEDs next to the switches light up if there is
sufficient battery voltage.
⇒ The specified radio connection between the
modules is initiated automatically and the LED on
module A flashes while the radio connection is
being established.
⇒ Once the radio connection has been successfully
established, the LED on module A and the LED on
module B light up permanently.
D Position module A as close as possible to the
RF expansion module.
D Connect module B to the service rod and move to
the required RF detector mounting location.
. The radio signal can be transferred all the while the
LED on module B is illuminated
(attenuation t 89dB).
. If the LED on module B starts to flash, the radio range limit has been reached
(attenuation 85dB). If the LED continues to flash, the radio signal is still strong
enough for trouble - free operation.
. If the LED on module B goes out, the mounting location of the RF expansion module
or the RF detector is outside the radio range.
Basic graphical
instructions (imprinted
on the modules)
Seite 10 von 32
PI - 32.15a
Switch
LED
Module A Module B
601-F.01U.002.708
A3.en / 28.12.2004
ST-FIR/ PRM1 / deh
Batt. LED