4.2.4 M easurement of digital channels
4.2.4.1 P ower measurement of digital channels
P R O M AX -6
directly provides the power measurement for QAM digital channels
with a bandwidth of 7 or 8 MHz as described below:
-
Select digital channel measurement mode in accordance with section 4.2.2.
-
Select the desired tuning mode and tune the desired signal in accordance with
section 4.2.1.
-
Wait for the measured value to stabilise. Read the vale displayed. Units will be
expressed in dBµ V (dBmV using option OPT-006-61 or by means of the
personalisation program RM-006).
-
The direct reading range covers from 34 up to 129 dBµ V and all measurements
within this range are entirely automatic. The microprocessor calculate the
attenuation value for the suitable measurement range. When the signal level to
be measured is lower/equal to the sensitivity or is higher/equal to the
equipment's saturation level, the signs "<" or ">" appear, respectively.
E xample 10.
Measurement of power level of a digital channel (D25)
D25
