REED C-322 Bedienungsanleitung
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Model C-322
Datalogging
Sound Level Meter
Instruction
Manual
Tripod sold separately (Model BS-6)
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Table of Contents
Safety ............................................................................................ 3
Features......................................................................................... 4
Specications.............................................................................5-6
Instrument Description.............................................................7-10
Operating Instructions............................................................11-14
Getting Started .....................................................................................11
Datalogger Clock & Interval Setup ................................................. 12-13
Calibration Procedures.........................................................................13
Operating Precautions..........................................................................14
Setup of TestLink RS232 Interface Software..........................14-18
Tutorial/Quick Start.................................................................18-20
Frequently Asked Questions ....................................................... 20
For service on this or any other REED product or information on other
REED products, contact REED Instruments at [email protected].
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3
Safety
Read the following safety information carefully before attempting to oper-
ate or service this instrument.
Use the meter only as specied in this manual; otherwise, the protection
provided by the meter may be impaired.
Environment conditions
• Altitude up to 2000 meters
• Relatively humidity 90% max.
• Operation Ambient 0 to 40°C
Maintenance & Cleaning
• Repairs or servicing not covered in this manual should only be per-
formed by qualied personnel.*
• Periodically wipe the case with a dry cloth. Do not use abrasives or
solvents on this instrument.
Safety symbol
Complies with EMC standards
*When servicing this meter, use only specied replacement parts. For
service (repairs or calibration) on this or any other REED product or
information on other REED products, contact REED Instruments at info@
reedinstruments.com.
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Features
This datalogging sound level meter conforms to the IEC651 type2,
ANSI S1.4 Type2 for sound level meters. It’s internal memory can keep up
to 32,000 records. Every time you press “REC” button to start recording
data and press “REC” button again to stop recording, there will be a data
set in the memory, you can store as many data sets as you want until the
memory is full. The C-322 uses RS232 interface to perform bi-directional
communication with PC.
• 32-80, 50-100, 80-130 dB level ranges
• Auto-ranging from 30 to 130 dB
• Dynamic range of 50 dB
• 0.1 dB resolution
• Frequency Range: 31.5 Hz to 8 kHz
• Accuracy of ±1.5 dB (ref 94 dB @ 1 kHz)
• 32,000 record data logger
• 4-digit backlit display
• Clock and bar graph displays
• Auto power off
• AC and DC output
• Max/Min function
• IEC651 Type II
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Specifications:
Standards: IEC651 Type2, ANSI S1.4 Type2
Frequency Range: 31.5Hz to 8KHz
Measuring Level Range: 30 ~ 130dB
Frequency Weighting: A/C
Microphone: 1/2” electret condenser microphone
Display: LCD
Digital Display: 4 digits
Resolution: 0.1dB
Display Update: 0.5 seconds
Analog Display: 50 segment bargraph
Resolution: 1dB
Display Update: 50 mS
Time Weighting: FAST (125mS), SLOW (1 sec.)
Level Ranges: Lo : 30 – 80 dB
Med: 50 – 100 dB
Hi: 80 – 130 dB
Auto: 30 to 130 dB
Accuracy: ±1.5dB (under reference conditions
@ 94dB, 1KHz)
Dynamic range: 100 dB
Alarm function: “OVER” is when input is more than the
upper limit of range
“UNDER” is when input is less than the
lower limit of range
MAX/MIN Hold: Holds the Maximum & Minimum value readings
AC output: 1 Vrms at FS (full scale)
Output impedance: Approx. 100Ω
FS: means the upper limit of each level range
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DC output: 10mV/dB, output impedance approx. 1KΩ
Power Supply: 1 x 9V battery, 006P or IEC 6F22 or NEDA 1604
Battery Life: About 50 hours with alkaline battery
AC Adapter: Voltage 9 Vc.c. (8-10Vc.c. Max)
Supply Current: > 30mAc.c.
Socket : pin Ground
Casing Positive
External Diameter 3.5mm
Internal Diameter 1.35mm
Electromagnetic
Compatibility: RF eld = 3V/m
Total accuracy = specied accuracy + 0.5dB
Operation Temperature: 0 to 40°C ( 32 to 104°F)
Operation Humidity: 10 to 90%RH
Storage Temperature: -10 to 60°C (14 to 140°F)
Storage Humidity: 10 to 75%RH
Dimensions: 275 L ×64 W ×30mm H (10.8 ×2.5 ×1.2”)
Weight: 285g (including battery)
Includes: Battery, instruction manual, carrying case,
calibration screwdriver, windscreen,
RS232 cable, and Windows datalogging
software
Optional Accessory: Tripod (Model BS-6),
Windscreen (Model SB-01),
Sound Calibrator (Model SC-941),
AC Adapter (Model CFD00230V-09V00)
and USB Cable (Model JBUS300-1C000).
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Instrument Description
1- Windscreen
When taking outdoor measurements in windy weather or when measuring
air conditioning equipment, and such, the wind noise in the microphone
can cause measurement errors. Simply use the windscreen to reduce the
wind and therefore reduce it’s effects on your measurement.
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2- Display
Symbol Function
LCD 4 digits
MAX Maximum indication
MIN Minimum indication
Over range
Under range
FAST Fast response
SLOW Slow response
dBA A-Weighting
dBC C-Weighting
-Range indication
Low battery
Under range 20dB
AUTO Auto level range selective
REC Recording datalogger
FULL Memory is full
Auto Power OFF is active
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3- Power & Backlight Button
The power button turns the sound level meter ON and OFF, it also
turns the backlight ON and OFF.
Press it once to turn the sound level meter on.
Press it again for moment to turn the backlight ON and OFF.
Press and hold the power button for 3 seconds to turn the power OFF.
Note: When the meter is turned on, the LCD will show how much memory
is currently available.
4- MAX/MIN Hold Button
Press the MAX
MIN button to enter the maximum and minimum record-
ing mode. Select the proper level range before using MAX/MIN mode to
ensure that the reading value will not exceed the measurement range.
Press the button once to select MAX value. Press it again to select MIN
value, and press it once again to select current value with “MAX MIN”
annunciator blinking.
Press the MAX
MIN button and hold it down for 2 seconds to exit the
MAX/MIN mode.
Note: If the sound level range or change A-C weight are changed, the
MAX/MIN mode will be cleared.
5- Record Datalogger Button
When the REC button is pressed, the meter will start recording. The
“REC” annunciator is displayed. Press the button again to stop recording.
6- Frequency Weighting Select Button
A:A-Weighting is for general sound level measurements
C:C Weighting is for checking the low-frequency content of noise
Note: If the C-Weighted level is much higher than the A-weighted level,
then there is a large amount of low-frequency noise.
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7- Time Weighting Select Button
FAST is for normal measurements.
SLOW is for checking the average level of uctuating noise.
8- Level Range Control Button
Each time the LEVEL button is pressed, the level range will change
between “Lo” level, “Med” level, “Hi” level and “Auto” level.
9- Microphone
1/2” Electret condenser microphone.
10- CAL Potentiometer
Calibration control for level calibration adjustments.
11- RS232 Interface:
The RS232 signal output is a 9600 bps N 8 1 serial interface.
12- Signal Output Terminal
AC: 1 Vrms corresponding to each range step.
Output impedance
=
100Ω
Output signal by standard 3.5mm coaxial socket signal on pin.
Note: At “Auto” level range, output signal is
Auto select on “Lo” or “Med” or “Hi” level range.
DC: Output : 10mV/dB
Output impedance
=
1KΩ
Output signal by standard 3.5mm coaxial socket signal on middle.
13- External DC 9V Power Supply Terminal
For connection with AC adapter.
14- Tripod Mounting Screw
A tripod for this sound level meter can be purchased separately
(Model BS-6).
15- Battery Cover
AC Signal
DC Signal
Ground
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