Cisco D9040 User And Service Manual page 44

Control and Management Interfaces,
Alarm Relay Interface
During operation the condition of the D9040 Encoder can be monitored by three
relay contact outputs, accessible from the Alarm connector on the rear panel of the
D9040 Encoder. Furthermore, the alarm status is signalled by Alarm LEDs on the
front of the D9040 Encoder and by messages sent via the PNC control system. Refer
to Connecting an External Alarm System, page 3-14 for more information.
DPI and Cue Trigger Interfaces
The contact closure and cue trigger interfaces are used to signal cue triggers and
trigger Digital Program Insertion (DPI). DPI allows for the insertion of
advertisements into program content in the digital domain. The DPI messages are
in accordance with the SCTE 35 specification.
Redundancy
Encoder redundancy is controlled by the PNC.
2-12
Continued
Introduction
4020024 Rev C