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AirPlay
Information Sheet: Network Override Kit
Operation and Installation
Read Before Installing
Network Override Kit Contents
Theory of Operation
Part 0130-01171-01 Rev. A
MP
The Network Override Kit contains:
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An ST-LCR 2 Logic-Controlled Relay
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One spool of hook-up wire
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An Information Sheet
The ST-LCR 2 Logic-Controlled Relay is part of a contact closure cir-
cuit. In the AirPlay MP AFRTS conÞguration, the relay converts a
momentary closure from a Wegner tone decoder to a steady closure.
This circuit controls a Grass Valley Group Performer¨ switcher. The
circuit enables a central, remote network site to send Network Over-
ride and Return to Normal (return to local programming) commands
to the switcher. The override occurs at the most downstream point of
the Avid-supplied equipment.
When the Performer switcher receives a Network Override command,
the switcher output changes to a preselected Network input. The
switcher stays at this Network position until it receives a Return to
Normal command.
Network Override Kit Contents
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Summary of Contents for Avid Technology AirPlay MP
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Page 1: Theory Of Operation
Theory of Operation The ST-LCR 2 Logic-Controlled Relay is part of a contact closure cir- cuit. In the AirPlay MP AFRTS conÞguration, the relay converts a momentary closure from a Wegner tone decoder to a steady closure. This circuit controls a Grass Valley Group Performer¨ switcher. The... - Page 2 While the switcher plays the Network input, AirPlay MP continues to process its current playlist normally (including the use of arming win- dows), even though it is not playing on the air. AirPlay MP also con- tinues to send switcher commands to the Performer switcher. Because of the Override condition, the switcher does not execute these com- mands, but it keeps track of the latest one it receives.
- Page 3 Network Override Kit Installation Be sure the power supply is disconnected before you begin. To install the ST-LCR 2 relay: 1. Find a convenient place to locate the ST-LCR 2 Logic-Controlled Relay, illustrated in Figure 1. The relay should be near the termina- tion of the cable from the Performer Tally/Override connector, and it must be within 5 feet of an electrical outlet.
- Page 4 Network Override Kit Table 1 Input Position and Pin Indicators Input Position Pin Indicator Input Position Pin Indicator input 1 pin 1 input 6 pin 6 input 2 pin 2 input 7 pin 7 input 3 pin 3 input 8 pin 8 input 4 pin 4...
- Page 5 Network Override Kit 24VDC POWER SUPPLY ST-LCR 2 GVG TALLY/OVERRIDE PIN 4 (OR NET POS) + SUPPLY GVG TALLY/OVERRIDE PIN 14 (+5 VDC) WEGNER NET OVERRIDE CONTACTS LOGIC FLIP-FLOP WEGNER RTN TO LOCAL CONTACTS PIN 34 PIN 33 Figure 2 ST-LCR 2 Connection Diagram 11.
- Page 6 Product specifications are subject to change without notice and do not represent a commitment on the part of Avid Technology, Inc. The software described in this document is furnished under a license agreement. The software may not be reverse assembled and may be used or copied only in accor- dance with the terms of the license agreement.
- Page 7 1925 Andover Street, Tewksbury, MA 01876, USA. European Contact: Nearest Avid Sales and Ser- vice Office or Avid Technology Int’l B.V., Sandyford Business Center, Unit 3, Dublin 18, Ireland. Type of Equipment: Information Technology Equipment. Product Name: Avid Editing System, PCI Media Composer, MCXpress for Macintosh, Film Composer.
- Page 8 Network Override Kit Trademarks AirPlay MP, Avid, and the Avid logo are registered trademarks of Avid Technology, Inc. Performer is a registered trademark of Grass Valley Group. All other trademarks and registered trade- marks used herein are the property of their respective owners.
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