EZ Digital DS-1000 Series, Operation Manual

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1-3-1 NOTICE FOR PROPER MEASUREMENT
It is recommended to allow about 15 minutes after power on as warm up time
before starting measurement. Traces may drift a little just after power on.
When measuring a signal with high accuracy trace declination, you can correct
the trace position using the automatic calibration function.
Before starting up this function, allow enough warm-up time.
The calibration is classified into software calibration for resorting to the
automatic calibration function in the menu, and hardware calibration for
optimizing the internal circuitry in a wide range.
1. The software calibration is recommended when the ambient temperature
has excessively changed (5 ) or when 1000 operating hours or 6 months
has been attained. If the trace is displayed excessively or when it is desired
to optimize the measurement, execute it referring to the automatic
calibration. Before calibration, disconnect all inputs for accurate adjustment.
2. The hardware calibration is necessary to keep the instrument to a stable
operation status. It is recommended to adjust the instrument every 2,000
operating hours or every year.
1-3 NOTES TO USERS
SOFTWARE CALIBRATION FOR OPTIMUM MEASUREMENT
The changes in measurement accuracy due to use environments
(temperature, humidity, etc) can be optimally corrected automatically
by activating the calibration. It is recommended to perform calibration
when any of the following cases applies.
- Before a customer starts to use this instrument first
- When an ambient temperature changes more than 5 , compared
with that at the time of the previous calibration.
- Every 6 months or 1000 operating hours
- Optimization of measurement accuracy is required
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