User Manual    AMETEK Programmable Power 
RS Series    140 
6.  Calibration 
The Routine Calibration should be performed every 12 months.  Non-routine Calibration is only 
required if a related assembly is replaced or if the periodic calibration is unsuccessful. 
Calibration of the RS system can be performed from the front panel or over the bus. The RSGUI 
program provides several calibration screens for this routine calibration but not for non-periodic 
calibration. This section covers calibration from the front panel. Refer to the RSGUI on line help 
for information on using the RSGUI program to perform routine calibration. 
Full-scale output calibration is done using the internal measurement system. As such, it is 
important to calibrate the AC and DC voltage measurements before performing an AC and DC 
full-scale output calibration. 
Note:  Perform the Measurement calibration first. 
The cardinal calibration points used during calibration are chosen to obtain optimal performance 
at the typical operating points of the RS Series. If the typical application in which the RS system 
is used is unusual, it may be better to calibrate it at different operating points than the ones used 
in this manual.  Also, if the required load values for current calibration are not available, the 
programmed voltage may be adjusted to obtain the approximate current (typically close to 
maximum available current per phase). 
6.1  Recommended Calibration Equipment 
Digital Multimeter:  Agilent 3458A or equivalent / better. 
1 mOhm Current Shunt:  Isotek Model RUG-Z-R001-0.1. 
Load Bank:  Various high power load resistors or a resistive load bank will 
be needed. (E.g. Avtron ) Size of the load bank depends on 
model and phase mode.  A load is required to perform the 
current measurement calibration near full scale.  Current 
measurement calibration should be done on the lowest 
available voltage range. 
The accuracy and value of the load resistor is not critical as 
long as the current drawn is sufficient to operate the AC Source 
in the upper current range (80-100 %). Suggested values of 
load bank settings are shown in Table 6-1. 
PC with CI RSGUI:  Optional.