Cisco Headend Digital Broadband Delivery System Guia Da Instalação
Chapter 2 Upgrading the Software
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4023372 Rev B
Physically Resetting the MQAM Modulator
1 Record the Session Count and the Program Count for your MQAMs by
completing the following steps:
Note: Skip this step for any MQAM that is used for video-on-demand (VOD).
a Press the Options button on the front panel until the Session Count total
Note: Skip this step for any MQAM that is used for video-on-demand (VOD).
a Press the Options button on the front panel until the Session Count total
appears.
b Record the Session Count on a piece of paper.
Note: Press the RF Select button to access each component of the MQAM.
c Press the Options button on the front panel until the Program Count total
appears.
d Record the Program Count on a piece of paper.
Note: Press the RF Select button to access each component of the MQAM.
e Repeat steps a) through d) for each MQAM in your system.
2 Reset the MQAM by turning off and then back on the power switch located on
the back panel.
Note: If it is difficult to reach the power switch, you can reset the modulators by
Note: If it is difficult to reach the power switch, you can reset the modulators by
pressing the Options button on the front panel until the Reset option appears.
3 Repeat steps 1 and 2 for up to three additional modulators.
Important: Never reset more than four modulators at once, or you may overload
the DNCS.
4 Repeat step 1 to record the current Session and Program Count totals for each
modulator that you reset. Then, go to step 5.
5 Does the Session Count and Program Count recorded in step 1 and step 4 match?
Note: Skip this step for any MQAM that is used for video-on-demand (VOD).
If yes, go to Verifying the Functionality of MQAM Modulators That Carry
Broadcast Sessions (on page 29). Then, go to step 6 of this procedure.
If no, contact Cisco Services.
6 Do you have additional modulators to reset?
If yes, repeat steps 2 through 5 until each modulator has been reset, and then
go to Verifying the Functionality of MQAM Modulators That Carry xOD or
VOD Sessions (on page 30).
If no, go to Verifying the Functionality of MQAM Modulators That Carry
xOD or VOD Sessions (on page 30).