Connecting To The Contact Closure Interface - Cisco D9054 Installation And Operation Manual

Connecting to the Contact Closure Interface

Contact Closure Connector
The D9054 encoder has a contact closure interface which can be used to trigger
digital program insertion (DPI). The contact closure interface has 8 inputs.
Pin Allocation
The connector labeled CONTACT CLOSURE is a 9-pin Sub-D connector (female).
The following table shows the connector and the pin allocation for the Contact
Closure connector.
Connector
Drawing
9
Note: Contact open = not connected (internal pull-up).
Contact closed = connected to ground.
To Connect to the Contact Closure Interface
Connect the external contact closure equipment to the contact closure interface.
Configuring Open-collector outputs for the Advanced D98xx Series Receivers
The Advanced D98xx series receivers (for example, Cisco D9854 Advanced
Program Receiver and Cisco D9858 Advanced Receiver Transcoder) supports
decoding of SCTE-35 messages with DTMF descriptor.
The receiver outputs tones or sets the open collector contacts according to the
content of the DTMF descriptor. For more information on the open-collector output
settings, see Setting Up the DPI, page 5-87.
4038938 Rev A
Pin Description
Number
1 Input 1
1
2 Input 2
3 Input 3
4 Input 4
5 Input 5
6 Input 6
7 Input 7
8 Input 8
9 Ground
D9054 HDTV Encoder Intstallation and Operation Guide 3-9