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DS232-4 June ’04
©2004 Reg. No. 227 4001, ENGLAND
Page 4
RS232 R
ADIO
M
ODEM
232C-868FR1
1.3.3 RS232
Connector
The RF Modem interfaces to the host computer via an RS232 connection using a standard DB9 connector as
shown in the diagram below.
1.4 Electrical
Characteristics
Specification
Conditions
Min
Typical
Max
Units
Channel center frequency
-
869.850
MHz
Aggregate air data rate
-
10
kbps
Modulation type
-
FSK
-
Range
Line of sight
800
m
Conformity testing / Standard -
ETSI 300 220
-
Standby current consumption
0.004
0.006
0.020 mA
Receiving
Sensitivity
CER <10-3
-101
dBm
Average CER
Input signal -50
dBm
<10-6
-
P1dB
CER <10-3
-10
dBm
Number of channels
-
1
-
Selectivity
At +/-150 kHz
36
dB
Current
consumption
30.0 33.0 33.0
mA
Transmitting
Output power @ Vcc = 12 V
-
7
dBm
Number of channels
-
1
-
Current
consumption
27.0 30.0 33.0
mA
1.5 Temperature Range and Dimensions
Storage Temperature:
-40
o
C to +85
o
C.
Operating Temperature:
-10
o
C to +55
o
C with full specification characteristics
-20
o
C to +85
o
C with performance deteriorated
Enclosure dimensions:
110mm x 85mm x 35mm
PCB dimensions:
99mm x 74mm
8
3
2
20
7
6
4
5
22
1
2
3
4
5
6
7
8
9
PC Serial Port
DTE
(DB25)
RF M ode m
DCE
(DB9F)
Tx
Rx
DTR
GND
RTS
CTS
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
PC Se rial Port
DTE
(DB9)
RF M odem
DCE
(DB9F)
Tx
Rx
DTR
GND
RTS
CTS