Omega OMB-DAQBOARD-3000 User Manual

Update Mode: N/A, the Hysterisis option has a forced update built into the function 
Criteria Used: window criteria for above and below the set limits 

 
The figure below shows analog input Channel 3 with a setpoint which defines two 16-bit limits, Limit A 
(High) and Limit B (Low).  These are being applied in the hysteresis mode and DAC Channel 0 will be 
accordingly.   

In this example Channel 3’s analog input voltage is being used to update DAC0 as follows: 

o

  When outside the window, low (below Limit B) DAC0 is updated with 3.0V.  This 

update will remain in effect until the analog input voltage goes above Limit A. 

o

  When outside the window, high (above Limit A) DAC0 is updated with 7.0V.  This update will 

remain in effect until the analog input signal falls below Limit B.  At that time we are again 
outside the limit “low” and the update process repeats itself.  

 

Hysteresis mode can also be done with P2C digital output port, or a timer output, instead of a DAC. 

 

 

 

 

Limit A 

Limit B 

 

Detection 

DAC0 

 

 

 

Ch 3 Analog 
Input Voltage 

 

 

DaqBoard/3000 Series User’s Manual

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Setpoint Configuration for Output Control      6-9