NF FRA5014, Instruction Manual

Page: 41 / 107

3.5 Basic Operations
FRA5014 3-11
3.5 Basic Operations
3.5.1 Sweep measurements
During a sweep measurement, a frequency sweep is performed and the gain and phase are measured
between CH2 & CH1, CH3 & CH1 and CH4 & CH1, based on CH1.
The main sweep settings are listed below.
•
AC amplitude
•
DC bias
•
Measurement frequency upper limit
•
Measurement frequency lower limit
•
No. of sweep measurement points
•
Sweep measurement frequency axis
•
Measurement delay time
•
Integration time
•
Integration cycle
Setting example
*RST

Initializes
VOLT 1

Sets AC amplitude as 1 Vrms
VOLT:OFFS 0

Sets DC offset as 0 V
SWE:MAX 100 kHz

Sets measurement frequency upper limit as 100 kHz
SWE:MIN 10 Hz

Sets measurement frequency lower limit as 10 kHz
SWE:SPAC:POIN 100

Sets number of sweep measurement points as 100 points
SWE:SPAC LOG

Sets sweep frequency axis as logarithmic axis
MEAS:DEL 0

Sets time between changing oscillation frequency and starting
measurement as 0 seconds
MEAS:INT:TIME 0.1

Sets integration time as 0.1 second
MEAS:INT:CYC 10

Sets integration cycles as 10 cycles
(The actual integration time (cycle) is the larger between the set integration time and the
integration cycle, and is set as an integer cycle period.)
VOLT:OUTP 2

Sets oscillator output as on
* When oscillator output is on, the oscillator’s output setting is reflected in the actual output
voltage. When the oscillator’s voltage setting is changed, enter the remote command to turn
oscillator output on so that it will be reflected in the actual output voltage.
Measurement example
SWE:MEAS DOWN

Sets the sweep measurement down, from the measurement
frequency upper limit toward the measurement frequency lower
limit
SENS:DATA:SWE?

Reads measurement data
(The MEASURE lamp is on during measurement. When the measurement is completed and
the MEASURE lamp goes off, read out the measurement data.)
After entering a remote command, set the unit to Talker.
For details, see “
5.4 Command Descriptions
”