Yokogawa Button Operated DX2000 - Manual (Page 97)

Measurement Channels and
Alarms
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Index
3.1 Setting the Scan Interval and the Integration
Time of the A/D Converter
Select the scan interval and the integration time of the A/D converter.
For a description of the scan interval and the integration time of the A/D converter, see
section 1.1.
Setup Screen
Press MENU (to switch to setting mode), hold down FUNC for 3 s (to switch to basic
setting mode), and select the Menu tab > A/D, Memory.
Setup Items
• Scan interval > Scan mode
Normal: Measures at the normal mode scan interval.
* The scan mode is fixed at Normal on DXs equipped with external input channels (/MC1
option) and when the multi batch function (/BT2 option; release numbers 3 and later) is
being used.
FAST: Measures at a scan interval of 25 ms (DX2004 and DX2008) or 125 ms (DX2010,
DX2020, DX2030, DX2040, and DX2048).
• Scan interval > Scan interval
The selectable settings appear.
• Scan interval > A/D integrate
When the scan mode is set to Normal, select the A/D integration time as necessary.
Only the selectable settings are displayed.
Settings Description
Auto The DX automatically detects the power supply frequency and sets the integration
time to 16.7 ms and 20 ms for 60 Hz and 50 Hz, respectively. Fixed to 20 ms on
/P1 models that use the 24 VDC power supply.
50Hz Sets the integration time to 20 ms.
60Hz Sets the integration time to 16.7 ms.
100ms Sets the integration time to 100 ms (when the scan interval is 2 s or 5 s).
600Hz The A/D integration time for fast sampling mode. You cannot change this value.
Chapter 3 Measurement Channels and Alarms