Cisco Headend Digital Broadband Delivery System Installation Guide
Download Software to the GQAM Modulators
4022900 Rev C
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Download Software to the GQAM Modulators
Introduction
To download the new software to GQAMs, you must first reset (reboot) the
modulators using one of the following methods:
DNCS GUI
auditQam utility
Front panel of the GQAM
CAUTION:
All active sessions on the GQAM will be interrupted when the modulator is
All active sessions on the GQAM will be interrupted when the modulator is
reset. DHCTs downstream of the modulator will lose their ability to display
services until sessions are reestablished.
Important: Use the procedure for
Preparing to Monitor Remote GQAM Resets
(on page 30) when resetting GQAMs from the DNCS GUI or when using an
auditQam script to reset multiple GQAMs.
After the modulators reset, the software is downloaded from the DNCS to the
After the modulators reset, the software is downloaded from the DNCS to the
modulators and existing sessions are reestablished.
Important Note Regarding the auditQam Utility
If you are using the auditQam utility to reset your GQAMs, your system must be
operating SR 4.0 SP1 or later.
Choose a Reset Method
Choose one of the following methods to reset your GQAMs:
To reset modulators through the DNCS GUI, go to Preparing to Monitor Remote
GQAM Resets (on page 30).
To reset modulators using the auditQam utility, go to Preparing to Monitor
Remote GQAM Resets (on page 30).
To reset modulators through the front panel, go to Physically Resetting the
GQAM Modulator (on page 32).
Note: Resetting GQAMs from the DNCS GUI or from the front panel can be time-
consuming. If you have a number of modulators to reset, consider using the
auditQam utility.