Cisco Model D9479 Gigabit QAM Modulator Installation Guide
Download Software to the QAM Modulators
78-740242-01 Rev B
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2 Reset the QAM by turning off and then back on the power switch located on the
back panel.
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 QAM that is used for video-on-demand (VOD).
If yes, go to Verifying the Functionality of QAM Modulators That Carry
Broadcast Sessions (on page 27). 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 QAM Modulators That Carry xOD or
VOD Sessions (on page 29).
If no, go to Verifying the Functionality of QAM Modulators That Carry xOD
or VOD Sessions (on page 29).
Verifying the Functionality of QAM Modulators That Carry Broadcast Sessions
1 Access a DHCT that is connected downstream to one QAM.
2 Refer to the Channels, Sources & Sessions Report that you generated and saved
2 Refer to the Channels, Sources & Sessions Report that you generated and saved
in Broadcast Sessions (on page 21) to verify restored QAM channels and
sessions.
3 Tune the DHCT to each channel listed in the report for each QAM that you reset
and upgraded.
4 Are all channels listed for the QAMs that you reset accessible from the DHCT?
If yes, go to step 5.
If no, do not attempt to upgrade the software for any additional QAM. Call
Cisco Services.
5 For those QAMs that carry content inappropriate for children, Cisco
recommends that you verify encryption using one of the following methods:
Using a set-top that is authorized for all services, tune one by one to each
service and check the PowerKEY Information diagnostic screen (page 6). If
the Prog Stat and Prog Entitle fields are zero (0x00), then the program is in
the clear. If these fields are non-zero, then the program is encrypted.
Verify that the program count is correct on the QAMs that carry
inappropriate content is correct before and after the reset.
Using a QAM tuner television, tune to the respective channels and verify that
inappropriate content is not viewable.