High Performance Spectrum analyzer

RA4333

RA4333 - Spectrum analyzer

Logarithm or linearity amplitude corresponding to Y-axis’s single grid Reference level display.
Resolution bandwidth (RBW ).
Video bandwidth (VBW ).
Center frequency or start frequency.
Span or stop frequency.
Marker-value readout.
Marker.
Value input box.
Trace.
Softkey menu.
Battery charge-level indicator.
Sweep mode: continuous or single Temperature.
Time.
Date.
Video average open/close
Detector mode

Frequency
Press “Freq” to set frequency according to center, start and stop frequency, and then set frequency Step. After setting step frequency, if you want to change other frequency parameters, you can modulate rotary knob and the cursor to the frequency you expected.

Span
The span menu is used to set the frequency range over which the instrument will sweep, the span can be set from 10 kHz to 3GHz. Press [zero span] softkey to set the span to 0Hz.

Amplitude Parameters
Press Ampt to set reference level, whichis the top graticule line on the display,and canbe set from +20dBm to -50dBm. The default unit is dBm and dBV, dBmV, dBuV are optional units. You can point the default unit by softkey [amplitude unit].
Scale decides resolution of Y-axis. The unit of Sacle is dB. Default scale value is 10dB, also can be set to 5dB,2dB,1dB,0.5dB,0.2dB and 0.1dB.

Bandwidth
RBW(resolution bandwidth)
RBW decides the minimum frequency interval between two equip-amplitude signals. Resolution bandwidth of the AV4022 spectrum analyzer steps from 100Hz to 1MHz with step 1, 3 and 10. The default RBW is automatically adjusted and relative to span. RBW automatically reduces when span get small.

Video bandwidth can decrease noise floor and smooth trace, IF signal after filtering and envelope demodulation becomes video signal and envelope signal Video bandwidth of the AV4022 spectrum analyzer steps from 10Hz to 3MHz with 1, 3 and 10 step. The default video bandwidth is automatical relative to resolution bandwidth.

Marker
Press Marker key to open the Marker menu.The AV4022 spectrum analyzer is equipped with five markers.

Delta marker set
Input frequency difference value on numerical area and press GHz, MHz, kHz or Hz. It displays frequency difference between Mark 2 and Mark 1 on the right of the grid window. Amplitude unit is the same with reference level.
Marker auto-locating function
Mark 1 has auto-locating function for easy operation, including peak value, sub-peak value, and left neighbor and right neighbor peak value.

Harmonic Measurement
Since a spectrum analyzer can measure many different signals in frequency domain,it is ideal for measuring harmonic level and harmonic rate. A signal generator with 100MHz output frequency and 0 dBm output level is used in the following measurement example.

Save measure data
The AV4022 spectrum analyzer can save the measure marker and measure state, and it is connected to PC with a series communication cable for downloading. The instrument can save up to 100 traces and 10 instrument states that are available for any load.
Download measure data
You can connect one port of a series communication cable to the serial port of the spectrum analyzer and the other port of the cable to PC. Then the stored tracescan be downloaded to your computer by the specific software provided with the instrument.

Upgrade via PC.
The firm ware of AV4022 can be upgraded via PC when the meter is linked by communication cable. You can get the upgrading software from service center of download it from the Internet.