tr1m-151-5 Radiometrix Ltd, tr1m-151-5 Datasheet - Page 8

• Manufacturer Part Number: tr1m-151-5
• Description: Multinarrow Band Fm Multi-channel Vhf Transceiver
• Manufacturer: Radiometrix Ltd

Received Signal Strength
If the microcontroller has a built-in Analogue to Digital Converter (ADC), the Received Signal Strength
Indicator (RSSI) output voltage level can be read by the microcontroller to estimate its distance from
transmitting TR1M unit or identify areas of weak signal reception.
RSSI can also be used to make a decision to switch to the second antenna in fixed installations within
building where the probability of null-spots are higher.
Radiometrix Ltd
2.5
2.3
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7
0.5
-130
Figure 6: Typical RSSI voltage variation with respect to RF level at TR1M
-120
-110
-100
TR1M Data Sheet
RF Level (dBm)
-90
-80
-70
-60
-50
-40
page 8