FLIR Commercial Systems Inc. RT30 Manuale Utente

  

™ Engineering Design Specification

 

 

Page 15 of 20

                  

 

1.  Press the Calibrate/Channel Switch for 5 seconds. 

2.  RU #1 and #2 both beep three times.  All devices are now on CH3, and the Communication LEDs are 

lit. 

3.  Press the Calibrate/Channel Switch for 0.5 second. 

4.  RU #1 and #2 both beep once.  All devices are now on CH1. 

5.  Press the Calibrate/Channel Switch for 0.5 second. 

6.  RU #1 and #2 both beep twice.  All devices are now on CH2. 

7.  Press the Calibrate/Channel Switch for 3 seconds. 

8.  RU #1 and #2 both beep twice.  All devices are now programmed to CH2. 

 
 
Note:  While several RUs can be used with one TU, use of multiple TUs with a single RU is not guaranteed to 

work, due to potential wireless communication interference. 

 
 

The RU shall be required to sync to any incoming message; therefore, significant power management is not 
possible during the ‘active’ state. 
 
To maximize battery life, an RU that has not received a transmission from the TU for 30 minutes shall enter a 
power-saving mode: 
 

•  The nRF905 shall be disabled. 
•  All indicators except the Power LED shall be disabled. 
•  The RU shall beep once every 20 seconds to denote the power-saving mode. 

 
Once the RU has entered this mode, it must be turned off and on again to return to normal operation. 

The TU shall implement full-time power management of the RF transmitter, its greatest power sink.  The 
nRF905 shall be disabled at the end of each transmission, reducing the power consumption by 80-90%.  
Because of the minimal transmission rate of the TU (duty cycle ~1%), the RF system shall thus be in low-power 
mode most of the time.