NF FRA51602, Instruction Manual

Page: 45 / 286

3.1 Function and use of each part of the panels
3
-
7
FRA 51602
● Measurement controls
•
DOWN UP : Pressing either of these buttons begins a sweep measurement. DOWN indicates that the
sweep direction is from the upper limit of the sweep frequency to the lower limit; UP
indicates that the sweep direction is from the lower limit to the upper limit.
•
SPOT : Pressing this button begins a spot measurement at the frequency that is currently set.
•
STOP : Pressing this button stops a sweep or spot measurement.
•
REPEAT
: Pressing this button toggles the
REPEAT
lamp that is above the key on and off.
If a sweep or spot measurement is started while the
REPEAT
lamp is lit, the measurement
is repeated. Spot measurements are repeated at the same frequency and sweep
measurements are repeated by repeating the sweep after the sweep ends. Pressing the
STOP key ends the measurements.
If a spot measurement is begun while the
REPEAT
lamp is not lit, the measurement is
performed one time at the current frequency. If a sweep measurement is begun, the sweep
is made one time.
● Oscillator controls
•
AC/DC OFF
: Turns the output voltages off. Neither the
AC
lamp or the
DC
lamp is lit.
•
AC OFF
: Turns only the AC output voltage off. Only the
AC
lamp is not lit.
•
AC/DC ON
: Turns the output voltages on. Both the
AC
lamp and the
DC
lamp are lit.
When the setting is changed, the actual output voltages do not change until this key is
pressed, even if the
AC
lamp and
DC
lamp are lit.
● Local key
Pressing this key changes the panel control mode from remote state to local state. However, if remote
with lockout state is in effect (GPIB and USBTMC only), this key is disabled.