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COM 3000Troubleshooting

Date: Jan 2024 Version 1

EAS Emergency Alert Systems can be interfaced with the COM3000 to stream emergency

notifications to all QAM channels. Similar to this a local message can be created and

played via a PC and VLC or a ZyCast Media Server.

https://www.fcc.gov/encyclopedia/emergency-alert-system-eas

Edge QAM In a typical installation, the COM51 cards will be configured to stream to a QAM20 /

QAM4 modulator.

GIGe

Gigabit Ethernet High speed Ethernet standard for transmitting data at one gigabit per

second. All switches in the GIGe (video) network must be rated to pass this level of

traffic.

IGMP Internet Group Management Protocol. Used by Ethernet Switches and end devices to

manage multicast video on IP networks.

HD High Definition

Hot-swappable The unit or device this term describes may be added to, removed from, or replaced

within the system it is a part of without powering anything down.

MPEG Moving Pictures Experts Group - A working group of ISO/IEC with the mission to

develop standards for coded representation of digital audio and video and related

data.

Most commercial and some residential TVs support MPEG4 standards. All DIRECTV HD

signals are MPEG4 contained in an MPEG2 transport stream. Many residential and some

older commercial TVs will only support MPEG2 signals.

http://mpeg.chiariglione.org/

PC/VLC The COM3000 can accept streaming video from a networked PC running VLC, an open-

source video software.

http://www.videolan.org/vlc/index.html

PID Packet Identification. A 13-bit field in the header of every 188-byte MPEG2 transport

packet.

Pro:Idiom Pro:Idiom is an industry accepted digital rights management encryption technology for

video signals broadcast in commercial establishments such as hotels, dormitories, and

hospitals. All major programmers have accepted Pro:Idiom as an encryption method to

secure programming. Only televisions or set-back boxes with built in Pro:Idiom

encryption system decoders will be able to decrypt the signal.

http://www.zenith.com/wp-content/uploads/2013/05/ProIdiom_Overview_2010-

10-08.pdf

Pro:Idiom Mobile A version of Pro:Idiom which is software based and can be decrypted using an

approved and licenses software player.

vantiva COM3000 Troubleshooting Manual

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