Sagax fdm demux

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This document describes the setup and use of analog and digital signal processing equipment for frequency division multiplexing (FDM) and demultiplexing. The setup includes an FDM generator, FM demodulator, and FDM demultiplexer. Graphs of modulated and demodulated spectra are shown to illustrate the FDM and demultiplexing process. The document is authored by Dr. Bertalan Eged of Sagax Communication Ltd. in Hungary.

Analog-

and digital hw

Signal processing-

and operating sw

Equipment

FDM de-multiplexing
Dr. Bertalan Eged, MD
Sagax Communication Ltd., 1096 Budapest, Haller u. 11-13. Hungary

www.sagax.hu

System

Outline
• Measurement setup
–
–
–

FDM generator
FM demodulator
FDM de-multiplexer

• Modulated IF spectrum
• De-modulated video spectrum with FM
• De-modulated video spectrum with AM

www.sagax.hu

2

Measurement setup
IF signal

Video signal

SGR-2500

SID-500

SRM-3100
SRM-3100

FDM generator

FM demodulator

FDM de-multiplexer

CH1-16/32

SRS-3000
Spectrum analyzer/
Panorama receiver

www.sagax.hu

3

FDM generator control panel

www.sagax.hu

4

FM demodulator control panel
IF frequency
setup

IF bandwidth
setup

www.sagax.hu

IF inversion
setup

5

FDM de-multiplexer
CH frequency
setup

CH output
setup
(*.WAV file)

USB/LSB
setup

www.sagax.hu

6

FDM de-multiplexer
IF panorama
window

www.sagax.hu

7

Video spectrum (12-60KHz)

www.sagax.hu

13

Video spectrum (60-108KHz)

www.sagax.hu

14

Video spectrum (108-156KHz)

www.sagax.hu

15

Video spectrum (156-204KHz)

www.sagax.hu

16

Video spectrum (204-252KHz)

www.sagax.hu

17

FDM multiplexed channels with AM

www.sagax.hu

18

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Sagax fdm demux

1. Analog- and digital hw Signal processing- and operating sw Equipment FDM de-multiplexing Dr. Bertalan Eged, MD Sagax Communication Ltd., 1096 Budapest, Haller u. 11-13. Hungary www.sagax.hu System

2. Outline • Measurement setup – – – FDM generator FM demodulator FDM de-multiplexer • Modulated IF spectrum • De-modulated video spectrum with FM • De-modulated video spectrum with AM www.sagax.hu 2

3. Measurement setup IF signal Video signal SGR-2500 SID-500 SRM-3100 SRM-3100 FDM generator FM demodulator FDM de-multiplexer CH1-16/32 SRS-3000 Spectrum analyzer/ Panorama receiver www.sagax.hu 3

4. FDM generator control panel www.sagax.hu 4

5. FM demodulator control panel IF frequency setup IF bandwidth setup www.sagax.hu IF inversion setup 5

6. FDM de-multiplexer CH frequency setup CH output setup (*.WAV file) USB/LSB setup www.sagax.hu 6

7. FDM de-multiplexer IF panorama window www.sagax.hu 7

8. IF spectrum www.sagax.hu 8

9. IF spectrum www.sagax.hu 9

10. IF spectrum www.sagax.hu 10

11. IF spectrum www.sagax.hu 11

12. IF spectrum www.sagax.hu 12

13. Video spectrum (12-60KHz) www.sagax.hu 13

14. Video spectrum (60-108KHz) www.sagax.hu 14

15. Video spectrum (108-156KHz) www.sagax.hu 15