Lenovo ThinkVision L171 Manual page 3

The main advantage of DDC/CI is its bi-directional communication structure between the PC and
monitor, which does not require a separate cable. All data is transmitted in both directions via the
video graphics card and the standard VGA or DVI signal cable. This capability allows for
functions like monitor control, adjustments, and diagnostics to be conducted via software using
the mouse and keyboard. In an enterprise or firm, this capability also allows the potential of
remote diagnostics and asset management by a technician via the LAN. Customer-supplied
software is needed to implement these functions.
International Organization for Standardization (ISO)/DIS 13406 Part 2
ISO/DIS 13406 Part 2 ensures ergonomic requirements are met when the Lenovo ThinkVision
L171 LCD monitor forms part of an ISO-compliant system. ISO/DIS 13406 Part 2 is an
international standard addressing ergonomic factors for flat-panel displays.
ISO-capable elements do not necessarily make an ISO-compliant system when put together. To
satisfy the requirements of ISO 13406 Part 2, a complete platform must be tested and must
comply with all applicable elements of ISO 13406 Part 2. The platform includes:
•
System unit
•
Operating system
•
Fonts
•
Video subsystem
•
Monitor
•
Keyboard
•
Mouse
When all contributing platform components satisfy their portion of the requirements, as verified
by the required total system testing, the platform is ISO 13406 Part 2-compliant.
Low-frequency electromagnetic emissions
The Lenovo ThinkVision L171 LCD monitor meets the Swedish Board for Technical Accreditation
(SWEDAC) MPR-2 requirements and those of MPR-3. MPR-2 is a guideline developed by the
SWEDAC to limit the electromagnetic emissions and electrostatic fields generated by
workstations. MPR-3 is the colloquial name for the Swedish Standard SS 43614 90:1995.
Electric and magnetic fields with frequencies between 5 Hz and 2 kHz are called extremely
low-frequency (ELF) fields. Those with frequencies between 2 kHz and 400 kHz are called very
low-frequency (VLF) fields.
The Swedish MPR-3 Standard is intended to limit these fields. Sources of these fields include
the power cord supplying 50 or 60 Hz power to the monitor.
TCO'99 compliance
•
Environment
•
Ergonomics
•
Usability
•
Reduction of electric and magnetic fields
•
Energy consumption
•
Electrical safety
VESA Display Power Management Signaling (DPMS)
The Lenovo ThinkVision L171 LCD monitor meets ENERGY STAR power consumption
requirements through implementation of the DPMS protocol. For effective power management,
the attaching system unit must also be hardware- and software-enabled for DPMS operation.
HelpWare®
HelpWare is a comprehensive set of service and support offerings for a more productive and
enjoyable computing experience. Many HelpWare services are included with the purchase of
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