CableTronix CT-DLM870D User Manual - page 8
In the single digital channel measurement mode, the channel number is shown “CHD”
instead of “CHV” that the analog channel number is shown. In the middle of the screen it
displays the digital average power.
Soft key function definition
Enter the spectrum analysis of current channel
QAM, enter QAM analysis mode
Channel setup
Change the Channel under Test
1. Press
keys to change the channel number in the sequence of channel plan.
2. Using the keypad directly input the desired channel to be measured, and press
.
Press
to enter spectrum analysis of current channel
mode, for detailed operation, please refer to 3.3 spectrum
measurement.
Press
to enter the QAM measurement, as shown in
Figure:
Enter the symbol rate using keypad and press
again to confirm and highlight next
parameter – MODE (modulation type).
Using
arrow key toggle the modulation type until
it shows the correct option and press
again to confirm.
Press
to fresh the measurement.
Press
or
to enter constellation analysis. To zoom
in the display, using arrow keys to highlight the quadrant you want to zoom in and press
or
.
Single Analog Channel Measurement
In the single analog channel measurement mode:
Soft keys definition: