FLIR Commercial Systems Inc. RT30 Manuale Utente

  

™ Engineering Design Specification

 

 

Page 14 of 20

                  

On power-up, the TU shall assume that the ambient light level is a “no alarm” condition.  If the TU is powered on 
in a brightly-lit room, it shall assume less light is an alarm condition; if it is powered on in a dark room, it shall 
assume more light is an alarm.  To change this operation, or adjust for changes in background light levels, the 
follow sequence shall be used: 
 

•  Press the Calibrate/Channel Switch briefly (approx. 0.5-1.0 second).  If the RU is in communication, its 

Detect LED and Beeper shall also turn off. 

•  Upon releasing the switch, the light level seen by the Light Detector shall become the ‘no alarm’ 

condition, and the RU shall beep twice to confirm the calibration. 

•  The TU shall inhibit detection of alarms for 2-3 seconds after calibration is complete, to allow the user to 

adjust the position of the TU. 

 

Note:  The Light Meter can be calibrated with the TU’s Power/Mode Switch in either the NCV or Light position. 

 
 

The RT30 can operate on one of three (3) adjacent RF channels.  To change to another channel: 
 

1.  Press the Calibrate/Channel Switch on the TU until the Detect LED flashes the Channel Select 

sequence defined in Section 5.4.2 (at least 10 seconds). 

2.  Any connected RU shall beep a number corresponding to the current channel of the TU.  If this is the 

correct channel, move to Step 4. 

3.  Press the Calibrate/Channel Switch briefly (~0.5 second) again.  The TU and RU(s) shall move to the 

next channel in the following round-robin order:  CH1 Æ CH2 Æ CH3 Æ CH1, etc.  The RU shall beep a 
number corresponding to the new channel number. 

4.  Once the TU and RU(s) are on the correct channel, press the Calibrate/Channel Switch for at least 10 

seconds again.  The new channel is now stored in both the TU and RU.  The RU shall beep a number 
corresponding to the new channel number again to confirm the action. 

 
 

If an RU is not programmed to the same channel as the TU, it can be synchronized in the same manner.  During 
the Channel Select process, the TU shall send out a message on all three channels, instructing any listening RU 
to move to the TU’s channel.