Reed C-322 User Manual

Model

Datalogging
Sound Level Meter

C-322

Instruction
Manual

Tripod sold separately (Model BS-6)

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Table of Contents

Safety ............................................................................................3

Features ......................................................................................... 4

Specications .............................................................................5-6

Instrument Description .............................................................7-10

Operating Instructions ............................................................11-14

Getting Started .....................................................................................11

Datalogger Clock & Interval Setup .................................................

Calibration Procedures .........................................................................13

Operating Precautions ..........................................................................14

Setup of TestLink RS232 Interface Software..........................14-18

Tutorial/Quick Start .................................................................18-20

Frequently Asked Questions ....................................................... 20

12-13

For service on this or any other REED product or information on other
REED products, contact REED Instruments at [e-mail].

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2

Safety

Read the following safety information carefully before attempting to oper­ate or service this instrument.

Use the meter only as specied 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 per­formed by qualied 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 specied 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

continued ...

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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 = specied 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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