Revision 6    HC900 Process & Safety Controller User and Installation Manual  195 
21 April 2017 
Analog Output Calibration  
Analog output modules have essentially one output type. 
A diagram of a precision ammeter connected to the terminals of a 4-channel Analog Output module is 
given in Figure 93.  The specifications of the meter must be consistent with calibration requirements. 
See page 101 for terminal connections for 8 and 16 channel AO. 
 
Figure 93 – Terminal board Connections for AO Calibration