Chroma 66203, User Manual

Page: 52 / 146

Digital Power Meter 66203/66204 User’s Manual
4-26
INTEG
Figure 4-39 INTERGRATION Setup Screen
The 66203/66204 Digital Power Meter is able to use energy accumulation to measure the
UUT power, voltage and current RMS within the fixed time consecutively in INTEGRATION
mode.
When in the INTEGRATION mode, the V, I and W indicators next to the voltage, current,
power display will blink. After the integration is started, the initial displayed voltage, current
and power measurement are not done for calculation within the integration time. The
measured value on the display window will blink as the reminder. When the test time is met,
new values will appear in the display window and the readings will not blink but start
calculating for the next integration time.
When the power measurement is set to INTEGRATION mode, the voltage or current range is
changed within the integration time will cause the power measurement error. The display
will show Range Change Error message as Figure 4-41 shows. Thus, if the maximum
condition of voltage or current peak is already known, it is suggested to set the voltage and
current test range to the one that can measure the maximum amplitude of voltage and
current signal before starting the integration measurement. If the range is set to AUTO, the
power meter will switch it to the one suitable for the measured signal automatically when in
INTEGRATION mode. During the measurement, if the signal peak exceeds the range
upper limit in a short time, the power meter does not prompt Range Change Error message
but continue the integration calculation due to long time measurement. However, if the
signal continues to exceed the range upper limit for a long time, the power meter will prompt
a Range Change Error message and start next integration calculation automatically.
Since the range switch will affect the measured value in INTEGRATION mode, the range
cannot be switched during measurement but viewable only. Similarly, the functions that
may affect the accuracy of integration measurement are not open for setting except viewing
in INTEGRATION mode.
Following is the procedure to set the parameter:
1. Press
SETUP and select Meas. The Meas indicator is on indicating it is in Meas menu.