TTMER5: Equalization of a digital line section
Devices used at the measuring place
Measuring equipments:
- Impulse generator /HT TR-0360/ - we can excite the connection with a periodic
measuring signal with the help of the impulse generator
- PCM analyzer ELEKTRONIKA EP2
- Interface tester Wandel&Goltermann DT10
With the help of the DT-10 type signal interface tester we can excite the connection
with pseudo-random signal, and we can measure the bit error rate.
- HP 54600A oscilloscope
Objects, tools
- Low-pass filter with a linear phase procession /1200 Hz/
/TTT/ - The 1.2 kHz "ideal" low-pass filter corresponds to the transmitter filter.
- Butterworth low-pass filter /600 Hz/6dB/ /TTT/
It models the transmission route
- Transversal filter /TTT/
It models the equalizing and the receiver filter function (a filter realized on an "ELF"
signal processing card accessible to a PC).
- Noise generator
/TTT/ - Using a noise generator we can inject a disturbing signal to the baseband
connection model.
- Adapter box /TTT/
(for connecting the tools and the model)