We have noted that some hardware units, including the Samsung NB30, appear to have a default setting to reduce the processor power supply when the unit is running on battery rather than on a constant mains power source.

This can attracts the attention of users when interviewing in the field for the first time as the performance of the questionnaire navigation and validations slows down. Therefore it is advisable to edit these settings on the field hardware units prior to departure. Our support team suggest the following steps:


1. Right click on the battery icon at the bottom right of your screen and click on ‘Power Options’Under ‘Plans shown on the battery meter’ make sure that ‘High Performance’ is selected and then click on ‘Change plan settings’ next to this option
2. Click on ‘Change advanced power settings’
3. Using the scroll-bar, scroll down to ‘Processor power management’ and expand
4. Expand ‘Maximum processor state’
5. You will now see ‘On battery’ and ‘Plugged in’ with percentages next to each one – change ‘On battery’ to 100% (you can do this by clicking on the percentage value, which is in blue)
6. Click ‘ok’
7. Expand 'System cooling policy'
8. For 'On battery' change from 'passive' to 'active'

Please do bear in mind that these setting may be found under different names, or in different locations on the hard drive on the particular hardware unit you may be using!