mindtouch Biamp Tesira Quick Start Manual

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Specifying PoE switches for Biamp Tesira devices

Many Biamp products are powered using PoE (Power over Ethernet) from a network switch. When powering many

devices from one switch, it's important to ensure that the switch has enough power to supply all connected devices. This

article is designed to aid AV network designers in PoE budget calculations for Tesira systems.

Initial considerations

In addition to ensuring network switches can handle the traffic that is intended to be transmitted through them, it is

important to make sure the switches can power all the connected PoE devices.

PoE (Power Over Ethernet) is a set of standards developed by the IEEE under the 802.3 publication that

describes power provision over Ethernet.

PoE Budget is a specification of network switches and multi-port PoE injectors. This power budget is a shared

resource available as needed to all ports. Each PoE device negotiates power needs with the switch or PoE

injector based on the class of the device. The device is then provided with power from the PoE budget

accordingly.

PoE budget may be exceeded during system operation if a network switch is not properly specified. This will cause the

switch to turn off PoE on one and possibly all the ports. The communication with endpoint devices will be interrupted and

Tesira performance could be temporarily or even permanently compromised.

The terms PoE and PoE+ have some overlap in meaning. For this reason, PoE and PoE+ equipment will be generically

referred to as "PoE equipment" throughout this article.

Calculating PoE device counts

Calculating how many devices a single network switch can power will help identify how many switches are required to

power all the PoE devices in the system.

Please follow these steps:

1. Check the total PoE budget of the switch in the manufacturer's specification.

2. Check the Biamp endpoint device's PoE class using the provided technical documentation or this

devices

reference chart.

https://support.biamp.com/Tesira/Miscellaneous/Specifying_PoE_switches_for_Biamp_Tesira_devices

Tesira PoE

Updated: Sun, 03 Oct 2021 23:43:23 GMT

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Summary of Contents for mindtouch Biamp Tesira

Page 1 Specifying PoE switches for Biamp Tesira devices Many Biamp products are powered using PoE (Power over Ethernet) from a network switch. When powering many devices from one switch, it's important to ensure that the switch has enough power to supply all connected devices. This article is designed to aid AV network designers in PoE budget calculations for Tesira systems.
Page 2 Tesira PoE Power Budget Calculator may be used. Tesira PoE devices Use the chart below for reference information on PoE classes and the maximum power draw of Biamp Tesira devices (listed in alphabetical order): https://support.biamp.com/Tesira/Miscellaneous/Specifying_PoE_switches_for_Biamp_Tesira_devices Updated: Sun, 03 Oct 2021 23:43:23 GMT...
Page 3 Model IEEE Standard PoE Class Max Consumption Max Power From Switch PoE Amplifiers AMP-450P 802.3at Type 2 Class 4 25.5W AMP-450BP 802.3at Type 2 Class 4 25.5W Remote Expanders EX-AEC 802.3at Type 2 Class 4 25.5W EX-IN 802.3at Type 2 Class 4 25.5W EX-IO...
Page 4 The algorithm for determining the correct PoE injectors is similar to selecting PoE network switches: • If using single-port PoE injectors, check that each injector supports the PoE class of the selected device and thereby provides the "Max Power From Switch" for the device. •...
Page 5 TCM-X and TCM-XA network boxes have the ability to connect up to two microphones on one switch port. However, the PoE class of the device remains the same, regardless of the number of connected microphones. • TCM-X network box is considered as a single IEEE 802.3af Class 3 device regardless of the number of connected TCM-XEX microphones.
Page 6 802.3at Class 4 device may require up to 34.20W from the switch instead of the 30W defined by the standard. Best practice is to verify capabilities of the switch and observe actual PoE loads and performance when a system is commissioned.
Page 7 EEE - Energy-Efficient Ethernet (IEEE 802.3az) This standard is intended to reduce power consumption by a PoE endpoint device. However, many of the Tesira and Dante PoE devices require constant power. It is recommended that EEE be disabled accordingly for guaranteed power provision and device performance.
Page 8 Link speed Link speed Model 100 Mbit/s 1000 Mbit/s PoE Amplifiers TCM-1A TCM-1EX N/A (connects directly to TCM-1 or TCM-1A) TCM-X TCM-XA TCM-XEX N/A (connects directly to TCM-X or TCM-XA) TTM-X TTM-XEX N/A (connects directly to TTM-X) A 100 Mbit/s PoE injector can still be used with Tesira AMP-450P, EX-UBT, TCM-1 and TCM-1A if connected via an AVB network switch that supports 100/1000 Mbit/s link speed because the above-mentioned devices are capable of downgrading to 100 Mbit/s speed: You still need to check the maximum power that the PoE injector can provide and make sure it is sufficient for the...