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OPERATION GUIDE
OG_SLR-434M_v10e
Circuit Design, Inc.
11
Channel
Frequency
Channel
Frequency
Channel
Frequency
NO.
HEX
(MHz)
NO.
HEX
(MHz)
NO.
HEX
(MHz)
102
66
434.3500
114
72
434.5000
126
7E
434.6500
103
67
434.3625
115
73
434.5125
127
7F
434.6625
104
68
434.3750
116
74
434.5250
128
80
434.6750
105
69
434.3875
117
75
434.5375
129
81
434.6875
106
6A
434.4000
118
76
434.5500
130
82
434.7000
107
6B
434.4125
119
77
434.5625
131
83
434.7125
108
6C
434.4250
120
78
434.5750
132
84
434.7250
109
6D
434.4375
121
79
434.5875
133
85
434.7375
110
6E
434.4500
122
7A
434.6000
134
86
434.7500
111
6F
434.4625
123
7B
434.6125
135
87
434.7625
112
70
434.4750
124
7C
434.6250
136
88
434.7750
113
71
434.4875
125
7D
434.6375
※
*The channel is set to No. 74 (434.000 MHz) for shipment.
※
*If you intend to use several SLR-434M units in the same area, use a channel plan that takes into
account radio interference due to third-order intermodulation.
Circuit Design provides a computational tool on our website for creating channel plans that avoid
interference due to third-order intermodulation. Calculation tool:
http://www.cdt21.com/resources/siryo6.asp
8. UART port communication settings
The serial communication conditions for the UART port of this product are as follows.
Communicatio
n speed
19,200 bps
Fixed value
Cannot be
changed.
Data
8-bit
Parity
None
Stop
1-bit
Flow control
Hardware: RTS/CTS pin
(Software flow: Xon/Xoff is not used)
(The RTS output terminal is normally Lo. When the CTS input terminal is “Hi”, UART data is not
output)
Note: The UART serial communication terminals (TXD/RXD/RTS/CTS) cannot be connected
directly to a PC or other Com port because the signal level and logic is different.