RX-AM4SF
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Instruction Manual
Le caratteristiche tecniche possono subire variazioni senza preavviso. La AUREL S.p.A non si assume la responsabilità di danni causati dall’uso improprio del dispositivo.
RX-AM4SF Receiver
The super-heterodyne receiver RX-AM4SF can provide a RSSI output indicating the amplitude of
the received signal: this output can be used to create a field-strength meter capable to indicate the
distance of the transmitting unit.
Furthermore the RX-AM4SF allows you to select the sensitivity level at which the module must
operate: setting it in a low-sensitivity condition (- 90 dBm) the receiver provides at the RSSI output
a proximity indication, that is not possible at high sensitivity due to the unavoidable saturation of
the receiver; this feature can be useful when you intend to realize equipments for access control
where, besides an identification code, you must also recognize the distance of the transmitter from
the opening under control.
Pin-out
Lot (Week/Year)
Code
15
1
Connections
Pin 1
+V Preamp
Positive voltage supply +5V
±
5%.
Pin 2-7
Ground
GND
Pin 3
Antenna
Antenna input, impedance 50 ohm
Pin 15
+V
Positive voltage supply +5V
±
5%.
Pin 11
Gain
Sensitivity Level Selection:
Logic level 0 : -109 dBm.
Logic level 1 : -90 dBm.
Pin 13
RSSI output
Output RSSI proportional to the amplitude of the input signal.
Pin 14
Data output
Data output from the receiver.
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15/02/2005
AUREL S.p.A.
Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com
- email:
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