Ophir Optronics Ltd QSR 用户手册

The working range given by the Quasar device depends greatly on the working 
environment (walls, obstructions, other radio equipment or electrical 
disturbances in the vicinity) and on the orientation of the device relative to the 
receiving radio on the host PC. Here are some suggestions for getting the best 
range possible. 

1.  For the standard model, the best range is obtained when pointing the 

antenna towards the PC radio.  

2.  For the ER model, the best range is obtained when the antenna points 

vertically, with the Quasar flat on a table-top. 

3.  Best working range is obtained with direct line of site between the Quasar 

and radio on the host PC. 

4.  Walls and other nearby obstacles can cause reflections, so best results will 

depend very much on the local environment. The Quasar should be 
oriented until the best results are given in any given situation. 

5.  Operation should be possible through thin plaster-board walls or other 

similar obstacles, with reduced operating range. 

6.  Bluetooth radio transmissions are robust, using frequency hopping 

between 79 channels from 2.402GHz to 2.480GHz. If data is lost when 
using one channel, the Bluetooth module inside the Quasar will try to re-
send the lost data on a different channel. However, interference from other 
radio devices using the same frequency band such as cellular phones or a 
WiFi internet connection may cause degradation in performance. If 
interference is present, the maximum data logging rate when using 
Pyroelectric or PD10 heads may be reduced. In addition, making the initial 
connection between the Quasar and the PC may be more difficult. 

7.  When working close to the maximum operating range, reduced data 

logging rates may result, in particular when using Pyroelectric or PD10 
heads. To get the best possible data rate, move the Quasar closer to the PC 
radio. 

8.  When working close to the maximum operating range, the connection 

between the Quasar and the PC may be sporadic or difficult to establish. It 
is recommended to make the initial connection to the PC with the Quasar 
as close as possible to the PC radio, and then to move further away if 
necessary while operating the Quasar. 

Several models of thermopile head are offered with an integral Quasar device 
mounted on the back. This option avoids having an extra wire between the 
thermopile head and the Quasar device, making the device completely 
"wireless". 

See the Ophir catalog on our website (

www.ophiropt.com

) for more details of 

heads offered with this option.