User's Manual

Returned errors list
Parameter Min Typ Max Unit
Digital I/O One Level 2.4 V
Pulse Counters 4 (A733 and A733GSM)
2 (A732)
0 (A731)
Pulse Counter Speed 2 pulses/s
Pulse Counter Input Levels
(Counting on Leading Edge)
0 2.4 V
Sensor Supply Current
(Switched Output)
500 mA
Sensor Settling Time 2 s
Data Memory Size 1024 Slots
Sampling Rate 0 255 samples
/slot
Storage Interval 60 65535 s
Other Interfaces
Serial Interface (3V TTL) Zero
Level
0.2 V
Serial Interface (3V TTL) One
Level
2.4 V
Battery Management Charge
Current (External Battery)
0.8 A
Radio Subsystem (Receive /
Transmit – Not Valid for A733GSM)
Operating Frequency (low-band
version)
4
430 450 MHz
Operating Frequency (high-band
version)
450 470 MHz
Frequency Stability (-20 to +50
C)
±1.5 kHz
Frequency Stability (-30 to +60
C)
±2.5 kHz
Receiver (Not Valid for A733GSM)
Sensitivity (12 dB S/S+N) -118 dBm
Image Frequency Attenuation
(1
st
IF=45MHz)
-70 dB
Local Oscillator Leakage 2 nW
Adjacent Channel Attenuation -70 dB
RSSI dynamic 90 dB
Operating current (incl. On-board
microcontroller)
32 mA
Transmitter (all measurements made
on 50Ohm resistive load – not Valid
for A733GSM)
Output power 24 26 27 dBm
4
This parameter represents the alignment range; the switching range can be
limited in the software to a narrower space (even to the extent of a single channel).
48