Rion UN-14 User manual

3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan
http://www.rion.co.jp/english/
INSTRUCTION MANUAL
SOUND LEVEL METER UNIT
UN-14

i
Organization of this manual
This manual describes the features, operation, and other aspects of the Sound Level
Meter Unit UN-14. If the unit is used together with other equipment to congure a
measurement system, consult the documentation of all other components as well.
The section starting on page iii contains important information about safety. Be sure
to read and observe these precautions in full.
This manual contains the following sections.
Outline
Gives basic information about the unit and contains a block diagram.
Names of Parts and Functions
Briey identies and explains the front panel display and controls, rear
panel connectors and all other parts of the unit.
Linking
Explains how to congure multiple units as a system.
Power Supply Connection
Explains how to make connections for powering the unit.
Microphone Connection
Lists the types of microphones that can be used, and describes how to
connect them.
Output Connections
Explains how to use the connectors on the rear panel.
Operation Modes
Explains the operation modes necessary for measurement, including input
setup mode, measurement mode, and calibration mode.

ii
* Company names and product names mentioned in this manual are
usually trademarks or registered trademarks of their respective owners.
Performance Characteristics
Contains charts that show the frequency weighting characteristics,
characteristics of the high-pass filter and low-pass filter as well as the
influence of extension cables.
Specications
Lists the technical specications of the unit.
Reference Material
Provides an explanation of group delay, microphone measurement range,
user lters, and maintenance parts.

iii
FOR SAFETY
In this manual, important safety instructions are specially marked as shown
below. To prevent the risk of severe damage to the unit or peripheral equipment,
make sure that all instructions are fully understood and observed.
Caution
Important
Disregarding instructions
printed here incurs the risk of
injury to persons and/or damage
to peripheral equipment.
Disregarding instructions
printed here incurs the risk of
damage to the product.
Mentioned about the tips to
use this unit properly. (This
messages do not have to do
with safety.)
Note

iv
To conform to the EU requirement of the Directive
on Waste Electrical and Electronic Equipment,
the symbol mark on the right is shown on the
instrument.
The product described in this manual is in conformity with the
following standards;
Electrical equipment for measurement control and laboratory use.
RION Co., Ltd.
3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan
This product can be used in any areas including residential areas.

v
Precautions
•Operate the unit only as described in this manual.
• Do not disassemble the unit or attempt internal alterations.
• Observe the following precautions before using the unit:
- Make sure that all connections are properly and safely established.
- Make sure that the unit is operating normally.
• The permissible ambient temperature range for operation and storage of
the unit is −10 to +50°C. Relative humidity must be 90% or below.
• Do not use or store the unit in locations which
- may be subject to strong magnetic elds or strong radiation, or
- may be subject to high levels of dust or splashes of water, or
- may be subject to gases or air with high salt or sulphur content, or
are in the vicinity of stored chemicals, or
- may be subject to high temperature, humidity, or to direct sunlight,
or
- may be subject vibrations or shock.
• Always switch off the power after using the unit.
• When disconnecting cables, always hold the plug or connector and do not
pull the cable.
• Use only the specied AC adapter or other specied power source.
• This is a precision device. Take care not to drop the unit and protect it
from shocks.
• The LCD panel of the unit can easily become scratched. Do not tap the
panel with a pointed object such as a pencil, screwdriver, etc.
• In case of malfunction, do not attempt any repairs. Note the condition of
the unit clearly and contact the supplier.
• When disposing of the unit, follow national and local regulations regarding
waste disposal.

vi
Contents
FOR SAFETY............................................................................... iii
Precautions......................................................................................v
Outline............................................................................................1
Names of Parts and Functions ........................................................4
Front panel ................................................................................4
Rear panel .................................................................................6
LCD panel ................................................................................7
Operation panel ........................................................................9
Top panel ................................................................................ 11
Bottom panel ..........................................................................11
Linking ........................................................................................12
Linking procedure ..................................................................12
Removing the cable from the link connector ........................... 17
Linking with Battery Unit BP-17 ............................................ 18
Using a single UN-14 unit .......................................................19
Linking with Interface Unit UV-22 .........................................20
Power Supply Connection .............................................................21
Using an AC adapter ...............................................................22
Using the Battery Unit BP-17 ..................................................23
Microphone Connection ...............................................................26
Selecting and installing a microphone ....................................26
Possible microphone/preamplier/extension cable combinations ..28
Output Connections ......................................................................30

vii
Operation Modes ..........................................................................31
Input setup mode ....................................................................31
Sensitivity setting ..............................................................32
1) Direct input of sensitivity setting ...................................32
2)
Calibration with Sound Calibrator NC-75/NC-74
or Pistonphone NC-72A ................................................... 36
3) TEDS communication mode .........................................41
Setting the ID number ............................................................42
Measurement setup mode ........................................................44
Calibration mode (OUTPUT CAL) .........................................46
Measurement mode .................................................................47
Overload indicator LED ....................................................48
Bar graph indication ..........................................................48
Relationship between AC OUT signal voltage
and sound pressure level ....................................................49
DC OUT signal .................................................................50
Check mode ............................................................................51
Using the Interface Unit UV-22 (option) .................................52
Factory default settings ...........................................................54
Performance Characteristics .........................................................55
Frequency response characteristics .........................................55
Inuence of extension cable EC-04 series ...............................56
Specications ...............................................................................57
Reference Material .......................................................................62
Delay of output signal..............................................................62
Measurement Range ...............................................................63
User Filter ...............................................................................64
Maintenance parts ...................................................................66

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