Ophir Optronics Ltd QSR Manuel D’Utilisation

The USBI and Pulsar technical and system performance specifications are 
described in Table 1-1. 

Measurement range 

Varies according to head in use.  

Refer to the Ophir Laser Power/Energy Measurement, at 
www.ophiropt.com, for full details of each individual head. 

 

 

 

Input range 

15nA to 1.5mA in 16 ranges  15nA to 1.5mA in 16 ranges 

A-to-D sampling rate

15Hz 

15Hz 

A-to-D resolution 

17 bits plus sign (0.0009% 
resolution) 

17 bits plus sign 

Electrical accuracy 

±0.25% ±20pA new;  
±0.5% ±50pA after 1 year 

±0.25% ±20pA new;  
±0.5% ±50pA after 1 year 

Electrical input noise 
level 

500nV or 1.5pA +0.0015% 
of input range @3Hz 

500nV or 1.5pA +0.0015% of input 
range @3Hz 

Dynamic range 

9 decades (1:10^9) 

9 decades (1:10^9) 

Measurement range 

Varies according to head in use.  

Refer to the Ophir Laser Power/Energy Measurement, at 
www.ophiropt.com, for full details of each individual head. 

Input range 

0 – 6v full scale 

0 – 6v full scale 

A-to-D sampling 

4kHz 

>20kHz 

A-to-D resolution 

12 bits no sign (0.025%) 

12 bits no sign (0.025%) 

Electrical accuracy 

±0.25% new, ±0.5% after 1 
year 

±0.25% new, ±0.5% after 1 year 

Electrical input noise  2mV 

2mV 

Logging rates, Turbo 
mode 

2kHz every pulse 

20kHz, every pulse on all 4 channels 
[using USB 2.0] 

Logging rates, 
normal log mode 

~ 300Hz 

~ 1kHz [using USB 2.0; varies according 
to PC's CPU speed and number of 
channels running] 

Log file timestamp 
precision 

1ms (0.001s) 

1us (0.001ms) 

Log file timestamp 
resolution 

~50ms 1us 

(0.001ms)