IMST iM871A User Manual

User Manual
iM871A Wireless M-Bus Module Specification
iM871A_WMBus_UserManual.docx, Wireless Solutions, v1.2 Page 18
4. Module Specification
4.1 General Radio Settings
In this chapter the possible radio configurations of the iM871A are described.
4.1.1 Channel Setup
Table 4-1 shows the RF channel setup. These channels are available in R-Mode for
transmissions from Meter to Other devices. The opposite direction is always done in 868.33
MHz (channel 5).
Channel
Frequency [MHz]
1
868.09
2
868.15
3
868.21
4
868.27
5
868.33
6
868.39
7
868.45
8
868.51
Table 4-1: Possible Frequency Channel Settings in R-Mode
4.1.2 Power Level Setup
Table 4-2 shows the possible power level setup relating to the 50 connector (pin ANT).
Power Level
TX power [dBm]
Description
0
-8
Minimum output power
1
-5
2
-2
3
+1
4
+4
5
+7
6
+10
7
+13
Maximum output power
Notes: The TX power values are dependent on the supply voltage of the radio module.
These values are valid for 3V supply voltage.
Table 4-2: Possible Output Power Settings

IMST iM871A Specifications

General

Brand	IMST
Model	iM871A
Category	Control Unit
Language	English