EQUIPMENT MANUAL:
MODELS DA118 and DA120 PPM 360 Meter
Document #: 1050-xxxx
Revision: B
CONFIDENTIAL AND PROPRIETARY INFORMATION
Copyright © 2015 The Nielsen Company. All rights reserved.
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The Models DA118 and DA120 PPM 360 Meter is a device that is worn or carried on a person,
usually by means of a belt clip. The PPM 360 Meter collects audio that is watermarked (also known
as “encoding”) with data information using Nielsen Audio’s patented Critical Band Encoding
Technology, and using cellular technology, forwards this information back to Nielsen Audio data
collection servers. The DA118 and DA120 also determines if the person wearing the PPM 360 Meter,
known as a “panelist”, is in his/her home or out of the home using an In-Home Beacon. The Models
DA118 and DA120 use a Headphone adapter accessory when the panelist is wearing headphones to
collect this data from MP3 or other audio devices that use headphones.
Charging of the Nielsen Audio Models DA118 and DA120 PPM 360 Meter is performed by a Class 2
power unit with USB type connector, or alternatively by use of a cradle system which interconnects
between this same power unit and the meter. The cradle system uses the same Class 2 power unit
with USB type connector; however, the cradle is a nest where the power from the class 2 power unit
USB type connector is transferred to a set of spring pins which contact with two charge contacts on
the side of the Models DA118 and DA120 meter when the meter is placed in the cradle nest, thereby
charging the meter. The cradle charging system is also an accessory of the Models DA118 and
DA120.
Figure 1 below illustrates the interactions of the Models DA118 and DA120 device with the outside
world as well as with other components of the system overall.
