U
uAP/ųAP
See MicroAP (uAP) Module.
UART
See universal asynchronous receiver / transmitter (UART).
UCE
See Universal Calculation Engine (UCE).
UDP
See User Datagram Protocol (UDP).
UID
See utility ID (UID).
UIQ
Trademarked term for UtilityIQ software. Not used as a product abbreviation.
ultracapacitor
An energy-storage component used in devices that require relatively little current and low voltage. This component is used in cellular smart meters, enabling them to send last-gasp power outage notifications, even in very low temperatures (where conventional batteries may fail).
Also known as a supercapacitor.
UMTS
See Universal Mobile Telecommunications System (UMTS).
unassociated
With HAN Communications Manager (HCM), the unassociated state is established by importing a new device through device import or by removing a device from an ESI.
UNC
See Universal Naming Convention or Uniform Naming Convention (UNC).
Underground AP and Relay
An Access Point (AP) and optimized for use in subterranean utility vaults in dense urban areas where pole top or pad mount infrastructure is not available.
unfillable gap
An instance of discontiguous meter data that cannot be filled. Unfillable G5RMs can occur for several reasons: the meter never recorded the data, the meter was reprogrammed, the meter’s flash memory was corrupted, time shifts, physical damage, and so on.
See also end gap.
unicast
The sending of packets over a network to a single device. The bulk of packets in Advanced Metering Manager (AMM) application.
uniform resource identifier (URI)
A string of characters used to identify a network resource, such as an electronic document, or image. A URI can be further classified as a uniform resource locator (URL), uniform resource name (URN), or both.
Unimag+
A domestic single jet meter that combines the turbine single jet technology with the proven reliability of the extra dry register.
Unimag+ PE
A single jet water meter especially designed for use in apartments. Its modular registar enables it to be transformed anytime into a communicating device and integrated into the Itron data collection solution.
unit under test (UUT)
A manufactured item undergoing testing to determine whether it will function adequately. Also called device under test (DUT). Used in the IMU Accuracy Tester software to refer to the gas IMU being tested.
universal asynchronous receiver / transmitter (UART)
An interface for serial communication between devices. Itron Communications Tester UART commands set and show serial communication information.
Universal Calculation Engine (UCE)
UCE performs logical and mathematical operations on data from interval streams. UCE returns either a vector representing a new stream of interval data, or a scalar, depending on the calculation. The UCE is also the means through which all internal Itron Enterprise Edition (IEE) Meter Data Management (MDM) and external applications request interval stream data through an XML API.
Universal Mobile Telecommunications System (UMTS)
The Global System for Mobile Communications (GSM) implementation of the 3G wireless phone system. Part of the IMT-2000 standards for mobile telecommunications services, UMTS provides service in the 2 GHz band and offers global roaming and personalized features. Also called 3GSM.
Universal Naming Convention or Uniform Naming Convention (UNC)
A standard system for identifying servers, files, folders, printers, and other resources on a local area network (LAN). The basic UNC format is \\servername\sharename, where servername is the host name or IP address of a network file server and sharename is the name of a shared directory on the server.
Universal Transverse Mercator (UTM)
A system that divides the globe into 60 North-South zones, each measuring six degrees wide in longitude. Zones are numbered consecutively from West to East.
Positions on the globe are given by zone coordinates, then the number of meters East (easting) or West (westing) from the center of the zone, and finally by the number of meters North (northing) or South (southing) from the center of the zone. UTM coordinates for the Golden Gate Bridge are zone 10 S, 545980m E. 4185742m N.
unjoin
To remove or separate an Itron NIC from its meter as part of a troubleshooting operation. Gas Interface Management Unit (IMU) that are to be retrofitted in the field to their corresponding gas and water meters are said to be unjoined up until the time they are joined.
With HAN Communications Manager (HCM), unjoin means to move a device from the join to the associated state. Also known as deprovision.
See also join.
unreachable meter
A meter transitions to this state if a route exists but if the device has not been read for a configurable period. See also reachable.
unread meter
Schedules attempt to read meters in two passes. Each pass consists of several read attempts. After the first round of attempts, the schedule places the meter in a requeue list and makes another, later pass. After the second set of retries, the meter is flagged for inclusion in the recovery schedule. Depending on the context, it may appear in the UI as an unread meter. See also remote terminal unit (RTU).
unsigned data
Data included in an authentication token, in addition to a digital signature.
UPN
See user principal name (UPN).
Uptime
A metric that represents the percentage of time that hardware, a network, or a device is operational and available. It refers to when a system is working, opposed to downtime, which refers to when a system is not working.
URI
See uniform resource identifier (URI).
use case
A list of actions or steps that define the interactions between a role and a system to achieve a goal. In the Unified Modeling Language (UML), a role is known as an actor. The actor or role can be a human, an external system, external hardware, or other similar subjects.
user account type
Either of two categories of users of Itron’s Field Deployment Management (FDM) software in a business unit—server user accounts and mobile user accounts. Server user accounts only have access to the FDM server software. Mobile user accounts only have access to the FDM mobile application software. User accounts may also be designated as both server and user account types, which have access to both the server and the mobile software.
User Datagram Protocol (UDP)
A protocol that allows computer applications to send messages (datagrams) to other hosts on an Internet Protocol network without previously setting up transmission channels or data paths.
user principal name (UPN)
In the context of Tenant Management, the part of a user account that precedes a domain within the Itron Identity Service. The UPN format generally has the user's first name initial and the last name (elric@eastcitypower.com). Do not enter an email address for the UPN. An email address generally has both the first and last name of the user (edward.elric@eastcitypower.com).
UTC
See Coordinated Universal Time (UTC).
utility enrollment group
Defined groups within HAN Communications Manager (HCM) that can be selected to participate in demand reduction programs a utility provides.
utility ID (UID)
A utility-specific, one byte, numerical identifier from 0 to 255, that is programmed by Itron into all Encoder/Receiver/Transmitter (ERT) modules, meters, and cell relays that it manufactures for a specific utility. The utility ID functions as a security code that prevents another utility and other unauthorized persons from performing certain functions on the ERT module, meter, or cell relay, and prevents two or more utilities with adjoining service areas from accessing each other's ERT modules, meters, or cell relays.
UtilityIQ software
A head end software suite that includes applications designed to help utility operators collect and manage AMI meter consumption data. These applications, which include Advanced Metering Manager (AMM) application, Meter Program Configurator (MPC), Firmware Upgrader (FWU), and Meter Plugins, are secure and scalable solutions which support meter reading, management, and analysis for power quality, meter status, peak pricing and more.
UtilOS firmware
The open standards-based network operating system for devices equipped with Itron NICs. UtilOS provides a suite of utility networking services, including network discovery, addressing, routing and switching, health, network time, security, and encryption.
UtilOS includes a metering interface that provides load profile functionality for electricity meters and water and gas IMUs. It records usage data and allocates it to the appropriate intervals so that it can be processed by back end systems.
UTM
See Universal Transverse Mercator (UTM).