NF WAVE FACTORY WF1967, Инструкция по эксплуатации

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4.4 Setting for Main Items
WF1967/WF1968
4-41
Vopen
Rload 50
Rload
Vload
×
+
=
4.4.13 To Set Load Impedance
By matching the setting value of the load impedance to an actual loading condition, the amplitude
and the DC offset (including the setting according to high level and low level) can be set with the
voltage that appears to the load end.
The value of the load impedance can
be set to a range of 1Ω-10kΩ, 50Ω or Hi-Z. However, if the
setting value of load impedance is changed, only the amplitude setting value and DC offset displayed
value are changed. The output voltage when the load is opened does not change.
a) Setting procedure
1.
When the load impedance field at the right of the
range field is selected and the ENTER key is
pressed, the selection list is displayed.
2.
Select the desired load impedance condition, and
then press the corresponding soft-key. When
[Vari] is selected, the load impedance can be set.
In this case, the input field of load impedance
value is displayed to the right of the load
impedance field.
If nothing is changed, press the CANCEL key.
b) Conversion formula
Converted by the following formula:
Load Impedance Setting Value: Rload (
Ω)
Output voltage when load is opened: Vopen
Output voltage setting value (load end voltage): Vload
Check
・
Output impedance is a constant 50Ω.
・
Neither the output impedance error nor the output voltage error is corrected.
The precision specification of the output voltage is the value when no load.
Selection list (soft-key)
Input filed of load
impedance is displayed