INSTALLATION GUIDE AXIS T81B22 DC 30W Midspan ENGLISH
About this Document interfaces are qualified as SELV (Safety Extra-Low Voltage) circuits according to IEC 60950. These interfaces can only be connected to SELV interfaces on other equipment. Electromagnetic Compatibility (EMC) WEEE Directive This document includes instructions for installing AXIS T81B22 on your network. Previous experience of networking will be beneficial when installing the product.
Safeguards Please read through this Installation Guide carefully before installing the product. Keep the Installation Guide for further reference. Caution! • • • Store the Axis product in a dry and ventilated environment. Use only accessories that comply with technical specification of the product. These can be provided by Axis or a third party. Do not attempt to repair the product by yourself, contact Axis or your Axis reseller for service matters.
Liability Every care has been taken in the preparation of this document. Please inform your local Axis office of any inaccuracies or omissions. Axis Communications AB cannot be held responsible for any technical or typographical errors and reserves the right to make changes to the product and documentation without prior notice.
AXIS T81B22 DC 30W Midspan Page 5 AXIS T81B22 DC 30W Midspan Package contents AXIS Midspan AXIS T81B22 DC 30W Midspan Power connections Terminal block Printed material Installation guide (this document) Warranty document ENGLISH The AXIS T81B22 DC 30W Midspan injects 51V DC power into the spare pairs of the Ethernet cabling. It complies with both IEEE802.3af and IEEE802.3at standards. These power levels allow a new range of Ethernet-based applications such as PTZ Cameras to use the Midspan.
Page 6 AXIS T81B22 DC 30W Midspan Installation 1. 2. 3. 4. Set the Power Selector to the correct setting (15/30W). Connect the AXIS T81B22 to a DC limited power source (LPS, 12/24V DC). Connect the unit Data In jack (In) to your remote Ethernet network switch using a shielded Ethernet cable. Connect the Data & Power Out jack (Out) to your Axis splitter or camera, using a shielded Ethernet cable.
AXIS T81B22 DC 30W Midspan Page 7 Power Selector Important! Before the unit is powered on, the power selector must be set in the correct position. PoE standard Power 30W IEEE802.3at 38W (12V DC source only) 15W IEEE802.3af 20W Indicators LED Port DC input Color Indication Unlit No camera connected Steady green Camera connected, normal behavior 802.3af (15W) Steady yellow Camera connected, normal behavior 802.
Page 8 AXIS T81B22 DC 30W Midspan Mounting instructions The AXIS T81B22 may be wall or bench mounted using the rear side holes. It can also be mounted on a DIN rail. Note the following before mounting the AXIS T81B22: • Do not cover the midspan or block the airflow to the product with any foreign object. Keep the midspan away from excessive heat and humidity, and free from vibration and dust.
AXIS T81B22 DC 30W Midspan Page 9 Specifications Environmental Temperature Humidity Operating -20 to 65°C -4 to 149°F max 95% (non-condensing) Storage -40 to 74°C -24 to 158°F ENGLISH Mode Electrical DC Input voltage 12VDC (10.2-14.4V DC), max. 38W 24VDC (20.4-28.8V DC), max. 20W Input current Max. 3.2A @ 12V DC Max. 1.6A @ 24V DC Maximum available output power 52V DC @ 12/24V DC in (max. 30/15W) Nominal output voltage 51V DC @ 12/24V DC Ethernet cable length 802.
Page 10 AXIS T81B22 DC 30W Midspan Troubleshooting Symptom Corrective steps Midspan does not power up 1. A port indicator is not lit and the PD (powered device) does not operate 1. 2. 2. 3. 4. 5. 6. 7. 8. Verify that the voltage at the power inlet is either 12V DC or 24V DC for Input voltage. Remove and re-apply power to the device and check the LED indicators during power up sequence. The Midspan did not detect a PD; and the port is not enabled. Verify that the PD is designed for PoE operation.
Installation Guide AXIS T81B22 DC 30W Midspan © Axis Communications AB, 2012 Ver.1.0 Printed: March 2012 Part No.
