Hioki FT3432 User manual

Printed on recycled paper Printed in Japan
Edited and published by Hioki E.E. Corporation
Technical Support Section
• All reasonable care has been taken in the production of this manual,
but if you find any points which are unclear or in error, please contact
your supplier or the International Sales and Marketing Department at
Hioki headquarters.
• In the interests of product development, the contents of this manual are
subject to revision without prior notice.
• The content of this manual is protected by copyright. No reproduction,
duplication or modification of the content is permitted without the
authorization of Hioki E.E. Corporation.
HEAD OFFICE
81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] FAX [phone]
E-mail: [email protected] URL http://www.hioki.com/
(International Sales and Marketing Department)
HIOKI USA CORPORATION
6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] FAX [phone]
FT3432
SOUND LEVEL METER
Instruction Manual
October 2009 Revised edition 1 FT3432A981-01 09-10H
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

i
Conrming Package Contents
•When you receive the instrument, inspect it carefully
to ensure that no damage occurred during shipping. If
da mage is evident, or if it fails to operate according to the
specications, contact your dealer or Hioki representa-
tive.
Conrm that these contents are provided.
• FT3432 Sound Level Meter (1)
• WS-14 Windscreen (1)
• NL-27-026 Silicon cover (1)
• VM-63-017 Hand strap (1)
• NL-27-014 Windscreen fall out
prevention rubber (1)
• 9757 Carrying case (1)
• Size AAA alkaline batteries
(IEC LR03) (2)
• Instruction Manual (1)

ii
FOR SAFETY
In this manual, important safety instructions are specially marked
as shown below. To prevent the risk of death or injury to persons
and severe damage to the unit or peripheral equipment, make sure
that all instructions are fully understood and observed.
Important
Note
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.)
WEEE marking:
This symbol indicates that the electr ical a nd electronic
appliance is put on the EU market after August 13,
2005, and producers of the Member States are required
to display it on the appliance under Article 11.2 of
Directive 2002/96/EC (WEEE).
This symbol indicates that the product conforms to
safety regulations set out by the EC Directive.
Chinese RoHS:
The mark for the Directive on the restriction of the
use of certain hazardous substances in electrical and
electronic equipment (only for China)

iii
Contents
Precautions......................................................................................... iv
Outline ................................................................................................ 1
Controls and Functions........................................................................ 2
Batteries .............................................................................................. 4
Attachments ........................................................................................ 6
Windscreen .................................................................................... 6
Windscreen fall out prevention rubber........................................... 6
Silicon cover................................................................................... 7
Hand strap ...................................................................................... 8
Connecting external equipment ..................................................... 9
State transition diagram (functions and operation keys) ................... 10
Measurement screen and processing screen...................................... 12
Power on and off ............................................................................... 14
Measurement ..................................................................................... 14
Calibration......................................................................................... 15
Menu settings .................................................................................... 16
Sleep mode ........................................................................................ 18
Recalling stored data......................................................................... 19
Initializing......................................................................................... 20
Specications .................................................................................... 21
Description for IEC 61672-1.............................................................. 26
IEC61672-1 (JIS C 1509-1) Frequency Response......................... 37
Reference incidence direction and reference point position......... 39
Frequency Response .................................................................... 39
Effect of Windscreen WS-14 ....................................................... 40
The greatest susceptibility conguration for radio frequency elds . 42
Statement of conforming to the basic statement ......................... 43
Adjustment data for sound calibrator ........................................... 43
The lower and upper limits of the linear operating range ............ 43
Directional Characteristics .......................................................... 44
Random incidence response......................................................... 46

iv
Precautions
•Operate the unit only as described in this manual.
•Do not touch any parts of the unit other than necessary for
operation.
•
Do not drop the unit. Protect it from shocks and vibration.
•The permissible environmental temperature range for operation
of the unit is -10 to +50°C. Relative humidity must be between
10% and 90%RH.
•Do not use or store the unit in locations which may be subject
to water, direct sunlight, high temperatures or humidity. Also
protect the unit from air with high salt or sulphur content, gases
or the inuence of chemicals.
•Do not forget to turn the unit off after use. Remove the batteries
if the unit is not to be used for some time.
•When disconnecting cables, always hold the plug and do not
pull the cable.
•To clean the unit, use only a dry cloth or a cloth lightly moistened
with water. Do not use chemical cleaning cloths, solvents or
alcohol-based cleaners to prevent the possibility of deformation
and discoloring.
•Do not insert any objects such as pins, metal scraps, conducting
plastic etc. into any opening on the unit.
•Do not disassemble the unit or attempt internal alterations.
•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 or the batteries, follow national and
local regulations regarding waste disposal.

1
Outline
This unit is a sound level meter that complies with the Japan
measurement law, JIS, and IEC. The microphone is a 1/2-inch
electret condenser (UC-52). It has a wide 107-dB linearity range,
measuring sound levels between 30 and 130 dB, with no need
to select the range. The unit has an LCD panel, operation keys,
an AC monitor output connector and a DC out connector. It is
able to measure the following items.
• Soundlevel Lp
• Equivalentcontinuoussoundlevel Leq
• Maximumsoundlevel Lmax
• Soundexposurelevel LE
• Cweightedpeaksoundlevel LCpeak
It is powered by two size AAA(IEC R03, LR03) batteries. The
main unit and preamplier are a single unit so it is not possible
to extend the microphone.
This unit has the following two level ranges.
Wide range: This measures the range between 30 and 137 dB
and allows simultaneous measurement of Lp, Leq,
Lmax, and LE.
Peak range: Along with the processing results for wide range,
this range also measures LCpeak, but the lower limit
for measurement becomes 65 dB.
Resume function
The following items maintain the same settings they had when
you turn the unit off the next time you turn the unit on.
• Measurementtime
• Timeweightingcharacteristics
• Levelrange
• Addressindication
The following items have predened settings upon startup.
• Frequencyweightingcharacteristic A
• Displayprocessingvaluetype Lp

2
Controls and Functions
Front Panel
Microphone/preamplier
Microphone and preamplier are integrated in a single enclosure.
An extension cable cannot be used.
START/STOP key
Press to sta rt or stop processing. Also used to change setting values
in the calibration screen, menu screen, and recall screen.
MODE key
Changes the processing result display in the measurement screen
and processing screen. Also used to change setting values in the
calibration screen, menu screen, and recall screen.
A/C/CAL key
This key selects the frequency weighting characteristics, calibra-
tion screen and recall screen. Pressing and holding this key in
the measurement screen changes it to the menu screen.
POWER key
Turns the unit on and off.
FT3432 SOUND LEVEL METER
START/STOP MODE A/C/CAL
POWER
MENU
START/STOP key
MODE key
A/C/CAL key
POWER key
Microphone
Preamplier

3
Side View
External connector
This connector is composed of a DC out connector and an AC
monitor output connector. (The connector can only be used for
one purpose at a time.)
DC out connector
A DC signal corresponding to the sound level can be output from
here. The signal after frequency weighting, time weighting, and
logarithmic compression is output here (constant output when a
DC output cable is con nected). Connect t he unit with the optional
DC output cable to external equipment.
AC monitor output connector
An AC signal weighted with frequency weighting characteristic Z
is output here (constant output when a n AC monitor output cable
is connected).
Connect the unit with the optional AC monitor
output cable to external equipment.
When 110 dB is displayed, output is 1 Vrms
+600 mVrms
- 400 mVrms
(The upper limit of the output voltage is 1.8 Vrms )
Strap mount
Attach the hand strap here (see page 8). Pass your wrist through
this strap when holding the unit for measuring.
DC out connector
AC monitor output connector
Strap mount
External connector

4
Tripod mounting thread
Mount the unit on a camera tripod with this thread.
Battery compartment
Insert two size AAA (IEC R03, LR03) batteries here.
Batteries
Inserting the Batteries
Important
Make sure the unit is turn off before inserting
the batteries.
1. Remove the battery compartment cover on the rear of the unit.
2. Insert two size AAA (IEC R03, LR03) batteries into the
battery compartment. Insert correctly as indicated in the
compartment.
3. Replace the battery compartment cover.
Rear View
Tripod mounting thread
Battery compartment
Battery
contact
Battery
contact
Press and pull in the arrow direction
Insert two size AAA
(IEC R03, LR03) batteries
Remove the battery
compartment cover

5
Important
Take care not to reverse the (+) and (-) polar-
ity when inserting the batteries. If batteries
are inserted with wrong polarity, the unit will
not operate.
Always use two identical batteries, and replace
batteries only as a set. Mixing bat ter y types or
old and new batteries can lead to damage.
Remove the batteries from the unit when it
is not used.
Do not subject the battery connectors to strong
force or stress. Damaged springs can lead to
loss of proper battery contact.
Battery life (at 23°C, using wide range)
Manganese batteries: approx. 3 hours
Alkaline batteries: approx. 9 hours
Battery life will be reduced by 20% when a DC output cable
is connected.
Battery indication
Indicates battery charge. When the indicator starts to ash,
correct measurement is no longer possible. Replace the batter-
ies with fresh ones.
Full charge Indicator flashing
(replace the batteries)
Important
If the indicator starts ashing during process-
ing, processing will end at that point.
You cannot start processing with the START/
STOP key when the bat tery indication is ash-
ing.

6
Attachments
Windscreen
We recommend attaching the windscreen to reduce wind
noise.
Windscreen fall out prevention rubber (hereafter called
“fall out prevention rubber”)
Prevents the windscreen from dropping off the microphone.
This is attached to the unit at the time of shipment.
Important
The windscreen can easily drop off the unit,
so we recommend attaching the fall out pre-
vention rubber.
Be sure to follow the instructions in the fol-
lowing diagram when attaching or detaching
the fall out prevention rubber. Turning it in the
opposite direction may loosen the microphone
and cause it to fall off.
FT3432 SOUND LEVEL METER
Turn the fall out
prevention rubber
only in this
direction.
SOUND LEVEL METER NL-27
START/STOP MODE A/C/CAL
POWER
MENU
Windscreen
Fall out prevention
rubber

7
Silicon cover
The silicon cover protects the unit from shocks and also makes
it easier to grip when held.
Fit it to the unit with the windscreen removed, as shown in the
following diagram.
Note
You cannot use external connector when the silicon
cover is tted.
You can attach the hand strap to the silicon cover
strap mount.
FT3432 SOUND LEVEL METER
START/STOP MODE A/C/CAL
POWER
MENU
SOUND LEVEL METER
NL-27
START/STOP MODE A/C/CAL
POWER
MENU
FT3432 SOUND LEVEL METER
START/STOP MODE A/C/CAL
POWER
MENU
Silicon cover
strap mount

8
Hand strap
To help prevent dropping of the unit, pass your wrist through
this strap when holding the unit for measuring.
Attach the hand strap as shown below.
Note
Attach the hand strap to the silicon cover if you
have tted the unit with the silicon cover.
Strap mount Hand strap
When you have not fitted the silicon cover
POWER
When you have fitted the silicon cover
Silicon cover strap mount

9
Connecting external equipment
You can connect external equipment, such as a HIOKI Memory
HiCorder to the external connector.
Connect as shown in the following diagram.
Note
The connector has the ability to act as a DC out
connector and an AC monitor output connector,
but it can perform only one of these functions at
a time.
FT3432 SOUND LEVEL METER
START/STOP MODE A/C/CAL
POWER
MENU
External connector
DC output
cable
CC-98D
Memory HiCorder, DMM etc.
Memory HiCorder etc.
AC monitor
output cable
CC-98A
FT3432

10
START/STOP key
START/STOP key, or
after the measurement
time has elapsed
Processing
screen
Measurement
screen
Calibration
screen
Reduce volume with
the START/STOP key
Move the address
down with the
START/STOP key
Move the address up
with the MODE key
Raise volume with
the MODE key
A/C/CAL key
A/C/CAL key
A/C/CAL key
A/C/CAL key
Frequency
weighting
characteristic A
Frequency
weighting
characteristic C
External calibration
Internal calibration
Recall screen
Startup Power on
A/C/CAL key
Pressing the MODE key in the measurement screen or processing
screen changes the display in the following order.
LpLeq Lmax LE( LCpeak) Lp
LCpeak only appears when peak range is selected.
Press and
hold the
A/C/CAL
key
Press and
hold the
A/C/CAL
key
Menu screen
Range setting
A/C/CAL key
A/C/CAL key
A/C/CAL key
Setting time
weighting
characteristics
Setting
measurement
time
Change the setting with the
START/STOP key or MODE key
Wide Peak
Change the setting with the
START/STOP key or MODE key
F S
Change the setting with the
START/STOP key or MODE key
1 m 5 m 10 m 1 h 1 m
State transition diagram (functions and operation
keys)

11
START/STOP key
START/STOP key, or
after the measurement
time has elapsed
Processing
screen
Measurement
screen
Calibration
screen
Reduce volume with
the START/STOP key
Move the address
down with the
START/STOP key
Move the address up
with the MODE key
Raise volume with
the MODE key
A/C/CAL key
A/C/CAL key
A/C/CAL key
A/C/CAL key
Frequency
weighting
characteristic A
Frequency
weighting
characteristic C
External calibration
Internal calibration
Recall screen
Startup Power on
A/C/CAL key
Pressing the MODE key in the measurement screen or processing
screen changes the display in the following order.
LpLeq Lmax LE( LCpeak) Lp
LCpeak only appears when peak range is selected.
Press and
hold the
A/C/CAL
key
Press and
hold the
A/C/CAL
key
Menu screen
Range setting
A/C/CAL key
A/C/CAL key
A/C/CAL key
Setting time
weighting
characteristics
Setting
measurement
time
Change the setting with the
START/STOP key or MODE key
Wide Peak
Change the setting with the
START/STOP key or MODE key
F S
Change the setting with the
START/STOP key or MODE key
1 m 5 m 10 m 1 h 1 m

12
Measurement screen and processing screen
Processing
mark
Processing re-
sult under range
indication
Sound level
under range
indication
Frequency weighting
characteristics
Processing re-
sult symbol
Time weighting
characteristics
Level indication
Bar graph, lev-
el range scale
Processing re-
sult overload
indication
Sound level
overload indi-
cation
Battery indica-
tion
Address number
Elapsed time
Measurement time
Measurement time
The measurement time set in the menu screen (see state transi-
tion diagram, page 11).
Elapsed time
The amount of time elapsed since processing started.
Address number
The address where the processing result (the next process result
in the measurement screen) is stored.
Battery indication
Indicates battery charge. (see page 5)
Bar graph, level range scale
Shows the sound level in a bar graph.
Sound level overload indication
Shows that the sound level has exceeded the measurement
range.

13
Processing result overload indication
Appears during processing when the sound level exceeds the
measurement range, and remains until the next process starts
(when a processing result is shown).
Level indication
Shows the sound level (Lp) and each processing result (Leq, Lmax, LE,
and LCpeak) as digits. Switch the display with the MODE key.
LCpeak is processed and shown only when peak range (see page
16) is selected.
Time weighting characteristics
Shows the time weighting characteristics selected in the menu
screen.
Processing result symbol
Shows the relevant symbol for the displayed processing result
(Leq, Lmax, LE, or LCpeak).
Frequency weighting characteristics
Change with the A/C/CAL key. See the state transition diagram
(page 10).
Processing result under range indication
If the sound level falls below the measurable limit (-0.6 dB) dur-
ing processing, this appears until the next process starts (when
a processing result is shown).
Sound level under range indication
Appears when the sound level falls below the measurable limit
(-0.6 dB).
Processing mark
Flashes during processing.

14
Power on and off
Press the POWER key for 0.5 seconds or more to t urn the power
on or off.
Measurement
Selecting frequency weighting characteristics
In the measurement screen, press the A/C/CAL key to select
either frequency weighting characteristic A or C. (See the state
transition diagram on page 10)
Processing (measurement)
Press the START/STOP key to start the processing.
The processing mark ashes during processing. Additionally,
pressing the MODE key switches the display to show processing
results (Lp, Leq, Lmax, LE, or LCpeak) made up to that point.
Processing stops when the measurement time elapses or you
press the START/STOP key.
Storing processing data
When processing stops, the Leq, Lmax, LE, or LCpeak process-
ing results are automatically stored, and the address number
increases by one.