Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide
Modify a QPSK Demodulator
Quick Path: DNCS Administrative Console > DNCS tab > Network Element Provisioning tab >
QPSK/CMTS > [Modulator Name] > File > Demodulators > [Demodulator] > File > Open Demod
QPSK/CMTS > [Modulator Name] > File > Demodulators > [Demodulator] > File > Open Demod
After a QPSK demodulator has been saved in the DNCS, you can modify only the node set and RF output
frequency assigned to that demodulator. To change any other parameters, you must delete the QPSK
demodulator and then re-add it to the DNCS, using the new information.
frequency assigned to that demodulator. To change any other parameters, you must delete the QPSK
demodulator and then re-add it to the DNCS, using the new information.
Important: We recommend that you assign each demodulator to a unique node set. In addition, set all
demodulators associated with the same modulator to the same frequency as the service channel for that
modulator.
demodulators associated with the same modulator to the same frequency as the service channel for that
modulator.
You Need to Know
Before you begin, you must know which QPSK modulator is associated with the QPSK demodulator you want to
modify. In addition, you must have your network map available.
modify. In addition, you must have your network map available.
Modifying a QPSK Demodulator
1.
On the DNCS Administrative Console, click the DNCS tab.
2.
Click the Network Element Provisioning tab.
3.
Click QPSK/CMTS. The QPSK/CMTS List window opens.
4.
Click once on the row containing the QPSK modulator associated with the demodulator you want to
modify.
5.
Click File > Demodulators. The QPSK Modem window opens for the QPSK modulator you selected.
This window shows the demodulator(s) associated with this QPSK modulator.
6.
Click on the picture of the demodulator you want to modify, and then click File > Open Demod. The
Set Up QPSK Demodulator window opens for the demodulator you selected.
Note: You could also open this window by clicking the right mouse button on the demodulator picture on
the QPSK Modem window, and then selecting Open from the menu that appears.
the QPSK Modem window, and then selecting Open from the menu that appears.
7.
.
Use the following fields when you manage a QPSK demodulator in the DNCS.
Field
Description
Port
The port on the QPSK modulator from which this
demodulator receives data.
demodulator receives data.
Note: This field is not editable. The only time you can
change this field is when creating a QPSK demodulator.
change this field is when creating a QPSK demodulator.
Node Set Name
The node set that you want to associate with this
demodulator.
demodulator.
Important: We recommend that you assign each
demodulator to a unique node set.
demodulator to a unique node set.
Frequency
The RF input frequency assigned to this modulator. You
can enter a value from 8 to 26.5 MHz, based on your
can enter a value from 8 to 26.5 MHz, based on your
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