Frequency analyzer

 Procedures of card frequency test:

1.     Connectthe BNC port behind cardtest probe to the BNC port of spectrum instrument panel;

2.     Set each button according tothe picture, “SCANWIDTH” tune to 5 referring to the below case of left andright arrows;

3.     Adjust “CENTER FREQ” button tomake the highest point stop horizontal center point of display panel;

4.     Put the card to the test probebox;

5.     Adjust “MARKER” button to makethe sweep-frequency point stop the right highest area of center line;

6.     Then the number showed by LEDis the resonance frequency of the card;

Naturesof spectrum analyzer:

Features:

l  Frequency range: 0.15MHz-500MHz

l  Sweep-analysis range: 0.15MHz-500MHz

l  Four and half digital display (center frequency, 0.1MHz resolution)

l  -100dBm-13dBm range, 20kHz and 400kHz intermediate frequencybandwidth, 4kHz video filter

l  Tracking generator

l  Output amplitude: -50 dBm-0dBm (50Ω)

Specifications:

l  Frequency range: 0.15 MHz-500 MHz

l  Display precision of the center frequency: ±2%*spectrumwidth+5*10-3*center frequency + 100 KHZ

l  Marking accuracy: ±0.1% bandwidth+ 100KHZ

l  Frequency display resolution: 100KHZ (four and half LED)

l  Sweep-frequency width: 100KHZ/frame 125 block and 0HZ/frame(0 scan),accuracy±10%

l  Frequency stability: better than 150Khz/hour

l  Intermediate frequency bandwidth(-3dB): 20KHZ(±50%),400KHZ+(0,-40%), video filter(pass): 40KHZ

l  Scan rate: 43Hz