Cisco Headend System Release 2.7 Guida All'Installazione
Chapter 1 SR 2.8.1/3.8.1/4.3.1
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4036043 Rev B
Be aware that there are FCC regulatory requirements to provide PSIP and EAS to
these devices.
If the DNCS is used for PSIP and inband EAS messages that are targeted to hosts,
such as QAM tuner TVs, the PSIP_INSERT_RATE variable should not be
present in the .profile. If it is present in the .profile file, it should not be set to 0.
SI_REGENERATION_TIME
The SI_REGENERATION_TIME variable in the .profile file needs to be set to 1200
(20 minutes) so that SI updates happen, at most, once every 20 minutes.
Complete the following steps to check the PSIP_INSERT_RATE and
SI_REGENERATION_TIME variables in the .profile file.
1 If necessary, open an xterm window on the DNCS.
2 Type the following command and press Enter:
The SI_REGENERATION_TIME variable in the .profile file needs to be set to 1200
(20 minutes) so that SI updates happen, at most, once every 20 minutes.
Complete the following steps to check the PSIP_INSERT_RATE and
SI_REGENERATION_TIME variables in the .profile file.
1 If necessary, open an xterm window on the DNCS.
2 Type the following command and press Enter:
grep PSIP_INSERT_RATE /export/home/dncs/.profile
3 Do the results from step 2 reveal that the PSIP variable already exists in the
.profile file?
If yes, and if the DNCS is NOT used for PSIP and inband EAS targeted to
hosts, continue with step 4.
hosts, continue with step 4.
If no, and if the DNCS is NOT used for PSIP and inband EAS targeted to
hosts, skip to step 5.
hosts, skip to step 5.
If no, and if the DNCS is used for PSIP and inband EAS targeted to hosts, go
to step 8; no .profile changes for the PSIP_INSERT_RATE are required.
to step 8; no .profile changes for the PSIP_INSERT_RATE are required.
4 Is the PSIP_INSERT_RATE variable already set to 0?
If yes, go to step 8; no .profile changes for the PSIP_INSERT_RATE are
required.
required.
If no, continue with step 5.
5 Open the .profile file with a text editor.
6 Is the PSIP_INSERT_RATE variable already in the file?
6 Is the PSIP_INSERT_RATE variable already in the file?
If yes, set the value of this variable to 0.
If no, add the following entries to the bottom of the file:
PSIP_INSERT_RATE=0
export PSIP_INSERT_RATE
7 Save and close the file.
8 From the xterm window on the DNCS, type the following command and press
8 From the xterm window on the DNCS, type the following command and press
Enter:
grep SI_REGENERATION_TIME /export/home/dncs/.profile