ASL INTERCOM WS-400 Kullanıcı Kılavuzu - Sayfa 9
İnterkom sistemi ASL INTERCOM WS-400 için çevrimiçi göz atın veya pdf Kullanıcı Kılavuzu indirin. ASL INTERCOM WS-400 9 sayfaları. Base station for wireless intercom with four tx/rx modules
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11.0
COMMMUNICATION MODES
11.1
Full Duplex Mode (for WS-19 and WS-29 beltpacks)
A full duplex wireless connection is accomplished by
using a dedicated TX/RX channel, selected on the
beltpack and on the base station.
11.2
Half Duplex Mode (for WS-19 single channel beltpacks only).
This mode allows more than one WS-19 beltpacks
on the same TX/RX channel. However, only one of
the WS 19 beltpacks can talk at a time and have a
full duplex connection. For as long as one of the
beltpacks has a full duplex connection (talk, listen
and call), the other beltpacks are able to listen to the
signals coming from the base station, but are not
able to call or talk.
In case of half duplex use of WS-19 beltpacks whilst
the corresponding TX/RX module in the base station
is connected to a wired party line intercom system,
the following has to be taken into account:
12.0 TECHNICAL SPECIFICATIONS WS 400
Mains
Mains power: 90 - 40 V AC, 50/60 Hz
Fuse: 1250 mA T
Power Consumption: max. 25 Watt
Input Amplifiers (4-wire mode)
input impedance: min. 10 kOhm
input level: +12 to -20 dBu
Output Amplifiers (4-wire mode)
output impedance: < 25 ohms
maximum load: 600 ohms
max. output level: +12 to -20 dBu
Intercom Line Drivers (party line mode)
Output current: max. 1 mA rms
output impedance: > 150 Kohm
audio line level: -18 dBu (max. 0 dBu)
signal-to-noise: 70 dB
station bridging impedance: >150 kOhm
ASL reserves the right to alter specifications without prior notice.
User Manual WS-400 / February 2011 © ASL Intercom BV .
Such a TX/RX channel links the TX/RX module in a
wireless beltpack to one of the TX/RX modules in the
base station.
The side tone prevents (when properly adjusted) the
microphone signal coming from the "talking beltpack"
to return to the beltpacks. The "listening beltpacks"
do not hear the "talking beltpack". To solve this, the
side tone trimmer of the concerning TX/RX module
should be turned down (fully counter clockwise).
But there is a drawback: the user of the "talking
beltpack" will hear his own voice with a delay of 24
msec and via the OWN VOICE link in the beltpack
(no delay). The effect of hearing your own voice
twice (with and without delay) can be diminished by
turning down the OWN VOICE trimmer. The
"listening beltpacks" will not notice the delay.
Side Tone
Rejection: better than 20 dB
WS 400 Dimensions & Weight
width
483 mm
height 44 mm
depth
165 mm
weight 2350 grams
System Specifications
transceiver frequency: 2400 – 2483.5 MHz
transmit Power: 10 mW E.I.R.P.
number of channels: 8
channel separation: 7 MHz
audio freq. response: 200 Hz - 12 kHz (-3 dB)
dynamic range: 70 dB
Note : 0dBu = 775 mV into open circuit
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