NF FRA5097, Instruction Manual

Page: 85 / 192

4.5 Oscillator setting
FRA5097 4-11
4.5 Oscillator setting
4.5.1 Oscillator basic setting
Use the menu [OSC] to set the parameters, states, etc. pertaining to the oscillator.
[FREQUENCY]
This is used to set the oscillator frequency. This is primarily used for measurements at
fixed frequencies (SINGLE measurement or REPEAT measurement).
[AMPLITUDE], [DC BIAS]
These are used to set the AC output voltage amplitude (Amplitude) and the DC output
voltage (DC Bias) of the oscillator. Press the
AC/DC ON
key by all means, even if the
AC and DC lamps are lit on at the time of setting operation.
！ CAUTION
The output voltage will not change even if you change the output voltage
settings, unless you press the AC/DC ON key.
[STOP MODE]
One of the following is selected in the oscillator stop mode, when you press the AC OFF
key:
[ZERO] : The oscillator stops with the AC output voltage becoming 0 V at the instant of
your pressing the key.
[HOLD] : The oscillator stops with the AC output phase being maintained at the instant
of your pressing the key.
[PHASE] : The oscillator stops at the time when the output phase becomes the same as
that set by [START/STOP PHASE] through time elapse.
Regardless of the setting mentioned above, the output voltage becomes 0 V when the AC/DC
OFF key is pressed.
The oscillator output voltages are shown in the figure as “Fig. 4-7 Oscillator stop
mode” , in which the AC OFF key is pressed first while the oscillator output is on, then
the AC/DC ON key is pressed.