NF DF 1906, Инструкция по эксплуатации

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4.3 Special Menu
DF1906
4-7
4.3.2 Select Output at Power On
When the power of the
DF 1906
is turned on, the settings of almost all items are restor ed to the settings
at power off.
However, you can select the output on/off state at power on.
Press special menu key [ SPECIAL ] to enter the output selection mode at power on (" Poweron Out " is
displayed in the center of the lower line).
When you turn the [ MODIFY] dial in this state, the output at power on can be selected.
・
PREV
→ Restore to the output state when power was last turned off at power on.
・
OFF
→ Output is always turned off at power on.
Use this setting, for example, when there is danger if the output is automatically turned
on at power on.
・
ON
→ Output is always turned on at power on.
4.3.3 Select Load
The setting values of amplitude/DC offset or high level/low depend on which of the load options,
/OPEN
or
/
50 Ω
, is selected.
Press special menu key [
SPECIAL
] to enter the load selection mode ( "
Load
" is displayed in the cener
of the lower line).
When you turn the [
MODIFY]
dial in this state, the load can be selected.
・
NONE
→ Use the voltage value with open load. (
/OPEN
).
・
50Ω → Use the voltage value with 50 Ω termination.
（
/50 Ω
）
.
In other than the load setting mode, you can know which is selected by the display on the right of the
lower line.
The output impedance of the DF 1906
is 50 Ω, so the voltage with 50 Ω termination is half that with
open load.
If the load is other than 50 Ω and the load impedance is X[Ω], the voltage is
｛
X/(X+50)
｝
times the
voltage with open load.
Ｆ ５００．０００００００ｋＨｚ Ａ ８．０００Ｖｐ－ｐ Ｏ －１．０００Ｖ
＜ＣＯＮＴ＞ Ｐｏｗｅｒｏｎ Ｏｕｔ ＰＲＥＶ ／ＯＰＥＮ ＯＦＦ
Output on/off at power on is displayed/selected
Ｆ ５００．０００００００ｋＨｚ Ａ ８．０００Ｖｐ－ｐ Ｏ －１．０００Ｖ
＜ＣＯＮＴ＞ Ｌｏａｄ ＮＯＮＥ ／ＯＰＥＮ ＯＦＦ
Open load or 50 Ω termination is displayed/selected
Also displayed here
Ｆ ５００．０００００００ｋＨｚ Ａ ４．０００Ｖｐ－ｐ Ｏ －０．５００Ｖ
＜ＣＯＮＴ＞ Ｌｏａｄ ５０Ω ／５０Ω ＯＦＦ
When 50
Ω termination is selected, the result is displayed like this