PDM Operator's Manual Version 2.4a • September 2019
PDM
VENTILATION WARNING
This equipment requires the free flow of air for adequate cooling. Do not block the
ventilation openings in the sides or rear of the unit. Failure to allow proper ventilation
could damage the unit or create a fire hazard. Do not place the units on a carpet, bedding, or
other materials that could interfere with any panel ventilation openings.
Trademarks and Licenses
Voltair and 25-Seven are trademarks of TLS Corp. Arbitron, Nielsen, Arbitron PPM, Portable
People Meter, PPM, Nielsen Audio and related trademark are the property of the Nielsen
Company. All other trademarks are the property of their respective holders.
All versions, claims of compatibility, trademarks, etc. of hardware and software products
not made by 25-Seven which are mentioned in this manual or accompanying material are
informational only. 25-Seven makes no endorsement of any particular product for any
purpose, nor claims any responsibility for operation or accuracy. We reserve the right to
make improvements or changes in the products described in this manual which may affect
the product specifications, or to revise the manual without notice.
This document and its content are copyrighted by 25-Seven and TLS Corporation and
may not be copied, reproduced, or distributed in any form without expressed written
permission.
Certain libraries are licensed to You under the terms of the GNU General Public License,
Version 2 (“GNU GPL”). Telos is not allowed to sub-license these libraries to You as You are
deemed to have Your own direct license from the original licensee. Telos does not modify
these libraries in any way. Telos hereby offers to You, upon Your request and for the actual
costs of materials and shipping, all source code and object code files for all such GNU
libraries contained in the Software. Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. Everyone is permitted to copy and
distribute verbatim copies of this license document, but changing it is not allowed.
Updates
Features and operations of Voltair are determined largely by software. 25-Seven Systems
strives to provide the most stable and feature-rich software available. We encourage you to
check for software updates from time to time by visiting our website or by contacting us
directly.
Feedback
We welcome feedback on any aspect of our products or this manual. In the past, many
good ideas from users have made their way into software revisions or new products. Please
contact us with your comments or suggestions.
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