YOKOGAWA FG420, Руководство пользователя

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59 IM FG410-01EN
4.4.12 Setting the load impedance
When the load impedance setting value is made the same as the actual load condition, the amplitude
and DC offset (including setting with high level, low level) can be set with the voltage value that
appears at load end.
The load impedance value can be set in the range of 1 Ω to 10 k Ω, 50 Ω , or open (High-Z).
However, even if the load impedance setting value is changed, only the displayed amplitude setting
value and DC offset setting value change, and the load-open output voltage remains unchanged.
a) Setting method
1.
Select the load impedance icon on the
right of the range icon and then press
the
ENTER
ENTER key.
2.
The load impedance setting window
opens, so press the
ENTER
ENTER key
again.
The load impedance condition choice
list opens. Select the desired load
impedance and then press the
ENTER
ENTER key.
When [Variable] is selected, the load
impedance value can be set.
3.
Once the load impedance setting has
been completed, select [OK] in the
lower part of the window and then
press the
ENTER
ENTER key to apply
the load impedance setting change
and close the window.
To not change the load impedance
setting, select [Cancel] in the lower
part of the window and then press the
ENTER
ENTER key, or press the
CANCEL
CANCEL key.
b) Conversion formula
Conversion is done with the following formula.
Load impedance setting value: R
load
( Ω )
Load-open output voltage: V
open
Output voltage setting value (load-end voltage): V
load
V
load
R
load
50 R
load
+
----------------
V
Open
× =
Select the load
impedance icon
and then press the
ENTER key.
The load
impedance setting
window opens.
Set the load
impedance
condition.
Select [OK] and
then press the
ENTER key.
4.4 Setting Methods for Main Items