Chroma 66203, User Manual

Page: 39 / 146

Operation
4-13
4.5.1 Setting Voltage Range
Figure 4-18 Voltage Range Setup Screen
The 66203/66204 Digital Power Meter has 6 ranges for voltage measurement, which are
600Vrms/300Vrms/150Vrms/60Vrms/ 30Vrms/15Vrms and the crest factor (CF) of each
range is 2. Thus, the measureable range for voltage peak is ± (range×CF).
When using Manual range or Auto range in 600V, if the input voltage peak is twice over the
range, the display will show Over Voltage Range (OVR) warning message and beep. When
the signal peak is down to the measureable range or proper range is selected, the over
voltage range warning message will disappear automatically.
Figure 4-19 Over Voltage Range Message
Following is the procedure to select the voltage range:
1. Press V RANGE, the 1
st
to 4
th
display windows will show the voltage range status at
present respectively. The channel indicators will show channel 1~channel 4
respectively as well.
2. In the 1
st
display window, the range of channel 1 will blink. Use ↑ , ↓ to select the
voltage range. When done, press TRIG/ENTER to confirm it. Then, the range of
channel 2 in the 2
nd
window will blink.
3. Use ↑ , ↓ to select the voltage range in the 2
nd
display window. When done, press
TRIG/ENTER to confirm it. Then, the range of channel 3 in the 3
rd
window will blink.
4. Use ↑ , ↓ to select the voltage range in the 3
rd
display window. When done, press
TRIG/ENTER to confirm it. Then, the range of channel 4 in the 4
th
window will blink.
5. Use ↑ , ↓ to select the voltage range in the 4
th
display window. When done, press
TRIG/ENTER to confirm it. Then, it returns to the 1
st
display window.
6. When the settings are done, press SETUP to exit the menu.
7. To skip to the desired channel for range setup, press TRIG/ENTER continuously to skip
the channel setting or press the mapping FUNC key to select the display window for
range setting.