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