Kathrein MSK 33 - Manual (Page 84)

Broadband Cable Analysis Measuring System MSK 33 /
MVG
84
Broadband Cable Analysis Measuring System MSK 33 / MVG
The broadband cable analysis system consists of the antenna
measuring instrument MSK 33 (including return path option) and the
signal generator MVG 10.
Both units function in the frequency range from 4.0 MHz to 860 MHz.
It allows the measurement of cable systems in CATV range (down-
stream) and in the return path range (upstream).
The measurement can also be carried out in the supplied cable.
The signal generator MVG 10 can wobbulate in many segment
ranges, which means that ranges which are occupied can be locked
by the generator, thus allowing TV reception not to be disturbed.
Therefore, before the measurement, make a frequency and level plan!
The MVG 10 requires a bandwidth of ca. 500 kHz for transmitting the
telemetric data, which means, that the set frequency points must have
at least a distance of 250 kHz from the used signal on the cable sys-
tem, provided the amplitudes of the used signal and MVG 10 signal
are the same.
Before each frequency change, the MVG 10 transmits the next recep-
tion frequency to the MSK 33 via a telemetric signal. In occupied
ranges, which must not be swept, the MSK 33 can carry on the meas-
urements in the same raster with maximum scanning speed. During
this time, the MVG 10 pauses. The MSK 33 measures the transmitted
level and represents in the spectrum. the measurement can be printed
out via the built-in printer.
Measuring principle
MVG10 MSK33
Report FRQa+1
FRQa FRQa
Transmitting
range Recording
Report FRQy
FRQx FRQx
Transmitting-free fast
range sweep
Report FRQz
FRQy FRQy
Transmitting
range Recording
Report FRQa
FRQz FRQz
CATV system
upstream
or
downstream
MVG10
MSK33