Casella CEL CEL-593 User Manual

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Page 1

Getting Started With

CEL-553, CEL-573 & CEL-593

Sound Level Analysers

“Series 3”

1. Introduction

Issue: 6

Series 3 of the CEL-500 analysers introduces a new instrument: the CEL-553 which is available ONLY as a real-time third-octave sound level meter, with user initiated storage of screen data.

Instruments in Series 3 can measure noise levels, calculate the commonly required time averaged parameters and save the results.

The standard memory is capable of storing about 200 000 data points, which is equivalent to 6 000 data screens while the optional extended memory can store approximately 1 000 000 data points, equivalent to 30 000 data screens.

Depending on model they can also analyse and store noise data in broadband and octave bands.

With the exception of the CEL-553 which has only SLM mode, the standard versions of these instruments can be operated in three different ways (measurement modes) as follows.

Real time sound level meter with user

initiated storage of screen data.

Event sound level meter with manual,

remote or threshold triggering

(CEL-593 only).

Environmental sound level meter with

user selected sampling periods

(CEL-573 and CEL-593). The measurement parameters available on standard versions vary from model to

model and from mode to mode as shown in Table 1 on page 73.

To simplify measurement procedures, pre-programmed setups are stored by the instrument. There is a separate directory for each application, mode and bandwidth, each of which contains one initial setup provided by the factory, and up to six more defined by the user. Similarly, stored data can be accessed via separate directories for each bandwidth, or via an additional directory that includes ALL data.

The following additional measurement applications can be installed.

Fastore capability that samples and

saves data at very short time intervals.

Building Acoustics.

Loudness Determination. Each instrument in the series can be up- (or down-) graded to any other model, to include more (or fewer) features. Consult your local agency or CEL for details.

Series 3 instruments with Version 7 and later firmware feature a revised startup sequence where Application, Acquisition Mode and Bandwidth are selected via separate menu screens, plus the option of measuring sound exposure level (SEL) in broadband SLM and a revised keypad appearance.

For a description of all CEL-500 series instruments, also refer to the Reference Handbook.

Getting Started - CEL-553/573/593 - Page 59

Page 2

2. Menus & Controls

Menus and results are shown on a high definition screen in both alphanumeric and graphical formats, while operator commands are exercised via the keypad in association with menu options shown on the instrument display. The earlier and later keypads are shown here for easy series identification. The keys have exactly the same functions despite a different appearance.

Figure 1 (opposite) shows a typical screen display with the currently selected option indicated by the reverse video cursor field. Options in the four lowest boxes on the screen are mirrored by the four areas on the lowest part of the keypad which allow the respective option to be implemented.

On most screens, the shallow boxes immediately above the four option boxes indicate the current instrument bandwidth, measurement or recall mode, or real time measurement status.

ON/OFF

980007e

Series 3 Keypad

Earlier Series 1 and 2 Keypad

3. Installing Microphone, Preamplifier, Interface Module & Batteries

Warnings !

To prevent DAMAGING the microphone, the 200 V polarizing supply must be OFF when a CEL-250 or MK 250 Electret Microphone is used. DO NOT remove the protective grid from Type 1 microphones as this will expose the diaphragm to possible damage. DO NOT fit microphones or preamplifiers to the instrument with the power ON. Screw microphones and adaptors only finger tight. Do not use pliers or other tools. Repairs of damage caused by a failure to observe the warnings in this book will not be covered by the normal warranty conditions.

If a CEL-250 or MK 250 microphone is supplied and you dont know whether the polarizing voltage is OFF,

anything else

Chapter 4.

When the polarizing voltage is

to be OFF

supplied, install microphone, preamplifier, interface and batteries as follows.

1. With the power OFF, locate the preamplifier in the guides (Figure 2) and push firmly into place.

2. Screw the CEL-192 Type 1 Microphone on to a CEL-527 or CEL-525 Type 1 Preamplifier.

Or:

already OFF, screw the CEL-250 (or MK 250) Type 1 Microphone on to a CEL-527 or CEL-525 Preamplifier.

Or:

Microphone on to a CEL-530 Type 2 Preamplifier.

, check it as described in

, or some other microphone is

ONLY when polarizing voltage is

Screw the CEL-292 Type 2

before doing

Esc

EXIT

known

Page 60 - Getting Started - CEL-553/573/593

Page 3

Indicates set up loaded by

C a i

default when switched ON

Non-deletable set up provided by factory

Reverse video cursor shows selected item

Current retrieve mode/ status/record number will be shown here

Current status/screen title/narrow band cursor status/message icons

Battery condition, icon empties as power is drained. When empty at 6.4 V, icon blinks

Overload has occurred: is removed from SLM screens after 2 s, remains on EVT, ENV and FST screens

Pause has occurred during measurement or PAUSE key pressed

Event capture is following an event

Fastore is following an event

SETUP 1:

INITIALSETUP

22-JUN-98

25-JUN-98

26-JUN-98

EMPTY

LOAD

ursor keys to

ccess next screen

n same level or run

STORE DELETE REVIEW

Cursor keys to access next level or run

SLM

Lights display backlight for 30 s

STOP

Esc

DisplayIconsandScreenOptions

Timer is active

Current application, bandwidth, or mode:

-/1/1 1/3 SLM EVT ENV FST RTC RT TMS RCS LOU

Current measurement status: STOP WAIT SYNC RUN PAUSE RECALL

Current box options

Escape from current screen

Keys that implement current box options

Broadband Octave band Third octave Real time sound level meter Event (CEL-593 only) Environmental (Not CEL-553) Fastore operations Rev. time- continuous Rev. time- Impulse

Transmit side measurement Receive side measurement Loudness determination

Measurement but no storage Waiting for timer Synchronising with clock time Measurement plus storage Run paused Recalling stored data

Figure1: Series 3

Thisscreenisobtained (after checking

themicrophonetype) bypressing

,USEMODE& SETUPxxxx

980006e

Cursor keys to select options within screen

Getting Started - CEL-553/573/593 - Page 61

Page 4

Or:

Screw the MK 301 Microphone on to the A67 Adaptor supplied with it, then screw the adaptor on to a CEL-527 or CEL-525 Preamplifier. Although Types 1 and 2 preamplifiers have a similar microphone thread, other physical limitations prevent operation with an incorrect pairing.

3. Locate the interface module in the guides (Figure 2) and push firmly into place.

4. When an active interface is to be used, install it before switching ON otherwise it will not be recognised by the firmware.

Warning !

LOAD BATTERIES in the correct orientations shown inside the battery compartment.

940028

One or two cells installed with the wrong polarity can still allow the instrument to function, but will provoke overheating severe enough to rupture a cell, with consequent risk to the operator and damage to the instrument.

5. Insert 8 standard AA size batteries in the orientations shown inside the battery compartment (and Figure 2). It is recommened that alkaline IEC Type LR6 be used.

6. Proceed to Chapter 5 to try simple measurements, or to Chapter 6 for acoustic calibration.

Figure 2: Installing batteries,

preamplifier and interface

4. Checking Polarizing Voltage & Microphone Type

When a CEL-250* (or MK 250) Electret Microphone is fitted and you do not know whether the polarizing voltage is OFF,

before doing anything else

as follows.

Note*:Microphones are identified by a name

engraved on the side of the sleeve.

1. If the microphone is a CEL-250 (or an MK 250) carefully unscrew it from the preamplifier.

2. Locate the preamplifier in the guides (Figure 2) and push firmly into place.

3. Observing the battery warning in Chapter 3, insert eight standard AA batteries in the orientations shown

Page 62 - Getting Started - CEL-553/573/593

, check it

980008e

PreviousMode

Screen

Backlight

"Series3 & 2"

NextMode

Setup/Review - ScreenOptions

inside the battery compartment (and in Figure 2). It is recommened that alkaline IEC Type LR6 be used.

Select Screen Entries

Next Screen

Next/ Previous Value

Page 5

4. Press the power key to switch the instrument ON.

5. Wait for the self test screens to clear and show the Configuration screen.

CONFIGURATION

CEL-593.C1M

Type 1

Time 16-Jun-98 Ø9:33:31 INSTRUMENT ID (DPB) = NNNNNN CURRENT MODE = SLM SELECT CHOICE FROM BELOW SET

CLOCK

APPLICATION

IEC 651 IEC 8Ø4Type 1

USE MODE

:1979 :1985

CAL

GS-01

M suffix indicates that Fastore,

Building Acoustics, Loudness

Determination and Standard

Application (SLM) are available.

R suffix indicates that Fastore,

Building Acoustics and Standard

Application (SLM) are available.

L suffix indicates that Fastore,

Loudness Determination and

Standard Application (SLM) are

available.

T suffix indicates that Fastore

and Standard Application (SLM) are

available.

No suffix indicates that only

Standard Application (SLM) is

available.

and bandwidth, which indicates the current battery voltage.

7. If the voltage shown for a NEW SET of batteries is only 9-10 V, check battery orientation.

8. Press OPTION to obtain the Options screen.

OPTIONS DELETE MEMORY CALIBRATE SET CLOCK MIC. RESPONSE CONFIGURATION

SET PRINTER LCD CONTRAST SET UP RS 232 POL. VOLTS SET RUN I. D.

STOPSLM

SELECT

GS-03

POL. VOLTS option is not available

while a Type 2 preamplifier is fitted

9. Use or to move the cursor to the POL.VOLTS option.

10. Press SELECT key to display the Select Polarizing Voltage screen which shows the current status.

SELECT POLARIZING VOLTAGE

200 VOLT POL. VOLTAGE FOR

AIR CONDENSER MICROPHONES

6. Press the USE MODE key to display the Status screen for the (last used) mode

STATUS : STOP 16-JUN-98 BATTERY MEMORY RUN START TIME RUN ELAPSE TIME APP: SOUND ANALYSER MODE: BROADBAND SLM

SLM

RECALL

OPTION SETUP REAL

Ø9 : 35 : 15

1Ø.8Ø VOLTS

Ø% FULLØRUNS

SLM

TIME

GS-02

CHANGE

GS-04

11. If the polarizing voltage is OFF, go to step 12, if it is ON, press the CHANGE key to switch it OFF.

Battery Voltage

Ø Runs with N% Full indicates

memory in use by another

Application

Getting Started - CEL-553/573/593 - Page 63

Page 6

Also use this screen to switch the polarizing voltage ON for condenser microphones.

12. Press power to switch the instrument OFF before re-installing the microphone.

Note: The FORMAT option on the last System

Test screen should be treated with great respect ! It purges all stored data and set ups, except for the initial set ups provided by the factory.

5. Trying Simple Octave Band Measurements

980009e

Screen

(Same Setup)

Backlight

"Series3 & 2"

PreviousData

StoredinThisRun

(WhenAvailable)

NextData

StoredinThisRun

(WhenAvailable)

Change Frequency

Next Screen (Same Setup)

Commands

Measurement- ScreenOptions

Observe the Warnings in Chapter 3.

With microphone type identified and polarizing voltage checked (Chapter 4), with batteries, preamplifier, microphone and interface installed (Chapter 3), try some simple measurements with a B or C version instrument.

1. Press the power key to switch ON.

2. Wait for the Start up screens to clear

and display the Configuration screen.

3. When the Current Mode is shown as

⁄1SLM, press the USE MODE key to

display the Status screen for this bandwidth and proceed to step 8.

4. When the Current Mode is not shown as

⁄1SLM, press the APPLICATION key

to display the Select Application screen. (The L suffix example also shows Fastore and Loudness.)

SELECT APPLICATION

1 SOUND ANALYSER 23FASTORE

BUILDING ACOUSTICS

LOUDNESS

Use to select

CEL-593.C1L

STOP

LOAD

5. Use and to move the reverse video cursor to SOUND ANALYSER, then press the LOAD key to load this Application and display a similar Select Acquisition Mode screen.

SELECT ACQUISITION MODE

SOUND LEVEL METER

ENVIRONMENTAL

EVENT

Use to select

CEL-593.C1L

STOP

LOAD

6. Use and to move the reverse video cursor to SOUND LEVEL METER, then press the LOAD key to

GS-05

SLM ENV EVT

GS-06

Page 64 - Getting Started - CEL-553/573/593

Page 7

SELECT BANDWIDTH

CEL-553.C1T

1BROADBAND 23OCTAVE BAND

THIRD OCTAVE BAND

SLM

Use to select

STOP

LOAD

GS-07

load this Application and display a similar Select Bandwidth screen. This identifies bandwidths as

/1octave band and1/3third

band,

/-broad-

octave band.

7. Use and to move the reverse video cursor to OCTAVE BAND

⁄1SLM, and press the LOAD key to

load the indicated bandwidth for use and display the Status screen while using the Initial Set Up that will have been loaded automatically.

8. If the voltage shown for a NEW SET of batteries is only 9-10 V, check battery orientation.

9. Press the REAL TIME key to display the octave band measurement screen.

250Hz

SLM

56.4

STOP

RUN

GS-08

RANGE

SPLF

RANGE

Within an Application,

Acquisition Mode and Bandwidth

can also be changed by using

& to change the identity

shown in the Application Box

Frequency and level of marked

band shown here

Measurement commences with the settings Lin plus A-weighted and SPL Fast for narrowband. Data storage is not possible without further action.

10. If necessary, use RANGE keys to give the correct dynamic range for the measurement.

11. Place the instrument near a noise source and observe the movement of the real time octave band columns.

12. Use and keys to obtain a readout of the octave band levels.

13. Press RUN key to enable data storage.

250Hz

11:16:31

STOP

SPLF

RECORD

SLM

DATA

56.4

RUN

RESET

GS-09

14. Press RECORD key to store a snapshot of the spectrum.

15. Observe that a DATA box has been added to indicate that stored data is available.

16. Change the noise or the instrument position and store further spectra.

17. Press DATA key to see the first stored spectrum.

18. Press to see the next stored spectrum.

19. Press STOP key to leave Run status.

20. Press ESC to return to the Stop Status screen.

STATUS : STOP 16 - APR - 98 BATTERY MEMORY

1Ø : 14 : 13

1Ø.8Ø VOLTS

1% FULL1RUNS RUN START TIME RUN ELAPSE TIME APP: SOUND ANALYSER MODE: BROADBAND SLM

RECALL

SLM

OPTION SETUP REAL

SLM

TIME

GS-10

21. Press to move to the recall side of the display. With Version 7 or later firmware, the cursor will already be on the recall side of the display.

Getting Started - CEL-553/573/593 - Page 65

Page 8

22. Press until1⁄1SLM is indicated in the left hand cursor field.

23. Press RECALL key to display the

⁄1SLM store Directory.

24. Use to select the date and time of the record just stored.

25. Press to display the Header screen for the run.

26. Press to display the Recall data screen 1 for the first spectrum.

27. Press to display the Recall data screen for the second spectrum.

28. Press ESC to return to the Status screen.

29. Press power to switch the analyser OFF.

You have now operated the instrument, using all of the steps required to store and recall data.

These are the steps required to

perform a simple noise survey.

Easy wasnt it ?

6. Field Accuracy Check (Acoustic Calibration)

Setting the clock and performing a calibration can be carried out in any Application and will be valid for all Applications.

With batteries, preamplifier, microphone and interface installed according to Chapter 3 above, proceed as follows.

1. Press the power key to switch the

instrument ON.

2. Wait for the self test screens to clear

and show the Configuration screen.

3. When the date and time are correct, go

to step 8.

4. When the date and time are incorrect

use the SET CLOCK option to display

the Set Clock screen.

5. Set the date and time using cursor and

value keys.

6. Press the SET key.

7. Press ESC key to return to the

Configuration screen.

8. Use the CAL option to display the first

Calibrate screen.

Page 66 - Getting Started - CEL-553/573/593

The Calibration screen can also be reached via the CAL option on the Options screen, see Chapter 10.

9. When the previous calibration is acceptable, use the ABORT option and go directly to step 14. When the previous calibration is not acceptable, use the CAL option to produce the second Calibrate screen.

10. Fit a CEL-284/2 Calibrator over a Type 1 microphone and either a CEL-282 or a CEL-284/2 Calibrator over a Type 2 microphone, making sure the microphone is correctly seated against the shoulder in the cavity (Figure 3).

11. Switch the calibrator ON. These calibrators generate a nominal level of 114.0 dB at 1 kHz.

12. For the CEL-192, CEL-250 and MK 250, if necessary use the LEVEL keys to adjust the sensitivity until 114.0 dB is indicated. For the MK 301, adjust the indicated level to 94.0 dB.

Page 9

CALIBRATION

LIN LEVEL FIT CALIBRATOR AND USE

PRESS SAVE-CAL TO SAVE AND

USE NEW SETTING OR PRESS

ABORT TO USE LAST SETTING

STANDARD CALIBRATION

ABORT

SAVE

CAL

DIRECTION

65.Ø dB

TO SET LEVEL

LEVEL LEVEL

GS-11

For the CEL-292 (due to differences in cavity volume), adjust the indicated level to 113.7 dB.

13. Once the correct level is indicated, use the SAVE CAL option to store the calibration for future use.

14. Press ESC key to display the current Status screen to start measurement and logging, then follow the instructions in Chapter 7.

Calibrator

Shoulder

'O' Ring

Microphone & Preamplifier

900049

Figure 3: Fitting acoustic calibrator

7. Practical Measurement, Logging & Printout

980009e

Screen

(Same Setup)

Backlight

"Series3 & 2"

Measurement- ScreenOptions

Observe the Warnings in Chapter 3.

With batteries, preamplifier, microphone and interface installed as detailed in

PreviousData

StoredinThisRun

(WhenAvailable)

NextData

StoredinThisRun

(WhenAvailable)

Change Frequency

Next Screen (Same Setup)

Commands

Chapter 3, a field accuracy check performed according to Chapter 6, and the Configuration screen displayed, proceed as follows.

1. When the Application, mode and bandwidth shown in the status field are suitable for the proposed measurement task, press the USE MODE key to display the Status screen for the mode and bandwidth, then proceed to step 6.

2. When the Application and bandwidth shown in the status field, are not those required for the proposed SLM measurement task, press the APPLICATION key to display the Select Application screen.

Getting Started - CEL-553/573/593 - Page 67

Page 10

3. Use and to move the reverse video cursor to SOUND ANALYSER, then press the LOAD key to load this Application and display a similar Select Acquisition Mode screen (shown in Chapter 5).

SELECT APPLICATION

1 SOUND ANALYSER 23FASTORE

BUILDING ACOUSTICS

LOUDNESS

Use to select

CEL-593.C1L

STOP

LOAD

GS-05

4. Use and to move the reverse video cursor to highlight the required Mode. then press the LOAD key to load the Mode and display a similar Select Bandwidth screen (see Chapter 5).

5. Use and to move the reverse video cursor to highlight the required bandwidth, then press LOAD to load the default setup for the indicated bandwidth and display the relevant Status screen.

6. If the voltage shown for a NEW SET of batteries is only 9-10 V, check battery orientation.

7. When the instrument is switched ON, once the self test is completed, the default setup ( in Figure 1) for each mode and bandwidth is loaded automatically for immediate use.

8. When the default setup is known to be suitable for the current task, go directly to step14.

9. When it is not known if the default setup is suitable, use the SETUP option to display the current Set Up screen and directory (see Figure 1).

10. When none of the listed setups are suitable, use the REVIEW option on the Set Up screen, edit an existing setup as described in Chapter 11 before using it, then go to step 13.

SLM SETTINGS

LIN

'A'

BARGRAPH(S) FAST RECORD TIMER= OFF

Q=3 Q=

PEAK= LINPEAK

REVIEW

PREV VALUE

FAST SLOW

STOPSLM 1

NEXT VALUE

GS-12

Indicates further parameters on

other screens accessed by

and

11. When the default setup which has been loaded for the mode (indicated by

), is found to be suitable, go directly

to step 13.

12. When one of the other listed setups for the bandwidth is suitable, use or keys to select it followed by the LOAD option to load it for use.

13. Press ESC key to display the current Status screen

14. Press the REAL TIME key to display the real time Stop screen.

250Hz

SLM

56.4

STOP

RUN

GS-08

RANGE

SPLF

RANGE

15. If necessary, press RANGE keys one or more times to obtain the correct range for the task.

16. Press the RUN key to start calculation and logging. All data from the run is stored in a file that is identified by its start date and time. This file is held in the directory of results for the current mode and bandwidth.

Page 68 - Getting Started - CEL-553/573/593

Page 11

Sound Level Meter

modes offer the option of storing a record with preset duration or an instantaneous snapshot of the values by means of a RECORD key, and will also store a snapshot automatically at the end of a run if the RECORD key has not been used.

250Hz

11:16:31

STOP

Event

SPLF

RECORD

modes, data is stored only

SLM

DATA

56.4

RUN

RESET

GS-09

after the threshold conditions have been met, or event storage has been initiated manually, or by remote signal via a CEL-503.

Environmental

modes store data automatically at the end of each set measurement period and run. Any snapshot or other timed data taken during a run will be stored with the run data file and identified 1, 2, 3, etc in sequence.

17. In SLM mode, press the RESET key to reset the parameters on display so that new accumulated totals or maxima can be determined.

18. In SLM mode, press the RECORD key to store a snapshot or timed record. (The key may be used again to store further snapshots or timed records.)

19. In any mode, inspect stored data from the current run by pressing the DATA key which is displayed ONLY when stored data is available.

20. In any mode, when a CEL-501 is fitted and connected to a Centronics printer

using a C6623/2 Cable (with the printer on-line), print the current screen by pressing the PRINT key.

250Hz

11:16:31

STOP

SPLF

RECORD

SLM

REAL TIME

56.4

RUN

GS-13

21. After inspecting and printing data as it is collected, press REAL TIME to return to the Real Time Run screen.

22. When the measurement run is complete or the required logging period has elapsed, press the STOP key to terminate the run.

23. When a further run with the same setup is required, start it by pressing the RUN key again and following the instructions from step 17.

24. When operation with the same mode and bandwidth but another setup is required, use SETUP and REVIEW options (step 7 and Chapter 11) to obtain a different setup, then follow the instructions from step 13.

25. When operation with a different mode or bandwidth is required, press ESC key to return to the Status screen, use

or to change the mode and bandwidth, use SETUP and REVIEW options (step 3 and Chapter 11) to obtain the required setup, then follow the instructions from step 13.

26. When data retrieval operations are required, press Esc key and go to step 4 in Chapter 8.

27. When no further operations are required, press power key to switch the instrument OFF.

Getting Started - CEL-553/573/593 - Page 69

Page 12

8. Retrieving Stored Data

980010e

Screen

(Same

Record)

Backlight

"Series3 & 2"

PreviousRecord

(SameScreen)

NextRecord

(SameScreen)

Change Frequency

Next Screen (Same Record)

Next/Previous Run

Recall-ScreenOptions

To retrieve stored data, it is not necessary to have the preamplifier, microphone and interface installed.

However, when data is to be downloaded, the relevant interface must be attached (see Chapter 3).

1. Switch the instrument ON.

2. Wait for the self test screens to clear

and the relevant Configuration screen

to be displayed.

3. When the cursor is on the Measure

(right side) Application Box, use to

move it to the Recall (left side)

Application Box.

4. When the required data was stored

using a different Application from that

currently loaded, change the Appli-

cation as described in Chapters 5 or 7.

5. When the required data was stored

using the current Application, press

the USE MODE key to obtain the

Status screen for the (last used) mode

and bandwidth for this Application.

Version 7 and later firmware will

highlight the recall field.

6. Press or keys sufficient times to

display the required recall mode and

bandwidth in the cursor field.

7. Use the RECALL option to display the

Directory screen for the bandwidth.

8. Press or to move the cursor to the

required entry, identified by date and

time.

9. Press to display the Header screen

for the identified run showing a

summary of data stored.

HEADER

START END LENGTH TIMED RECS

MIC=FF 2ØØV=ON TYPE=1 F, S L, A Q 3

LAST CAL 16-APR-98 16-APR-98 1Ø:13:23 16-APR-98 1Ø:44:38

Ø DAYS Ø:31:16

RECALL

SLM

PREV NEXT RUN RUN

GS-14

10. Press PRINT to obtain a printout of the Header screen on a Centronics printer connected via a CEL-501 and C6623/2 Cable.

Note: The PRINT option becomes available

only when the CEL-501 was fitted before the instrument was switched ON and the printer is on-line.

11. Press (or ) to display the first (or last) data screen from the identified run, and press PRINT to obtain a printout of the screen.

12. Continue to press (or ) to display the remaining data screens from the run, pressing PRINT to obtain printouts of the screens if required.

13. Press (or ) to display the equivalent screens from the next (or previous) timed record in the same run, pressing PRINT to obtain printouts of the screens when required.

250Hz

SLM

PREV NEXT RUN RUN

56.4

RECALL

GS-15

SPLF

111:16:31

14. When all data from this run has been displayed and printed, use the PREV RUN or NEXT RUN options to obtain the header for the previous or next run

Page 70 - Getting Started - CEL-553/573/593

Page 13

in this store directory, then resume the instructions from step 8.

15. When all required data from this directory has been displayed and printed, press ESC key to return to the Status screen.

16. When data from another bandwidth is to be displayed, use or keys

sufficient times to display the required store directory and follow the instructions from step 8.

17. When further measurement and logging are required, refer to Chapter 7.

18. When no further operations are required, press power to switch the instrument OFF.

9. Performing Full Data Download

A full download of all data stored in the instrument is possible only when a CEL-502 RS232 Interface is fitted to the instrument and connected via C6621/2 or C6622/2 Cables to a PC running application software.

The following Windows programs are

available for Series 3.

dB1 (CEL-6694) Download and Control Software for ALL Applications, including Loudness. This program has no graphing capabilites but can export data to other standard software packages for graphing and printing if required.

dB2 (CEL-6695) Software for Sound Analyser Application with comprehensive graphing and data manipulation fqcilities.

dB3 (CEL-6696) Software for Fastore Application with comprehensive graphing and data manipulation fqcilities.

dB4 (CEL-6697) Software for Building Acoustics Application with comprehensive graphing and data manipulation fqcilities.

Downloading takes place under the control of the relevant software, and the

10. Setting Instrument Options

SETUP RS 232

BAUD RATE 192ØØ

PREV VALUE

only operations to be performed on the analyser are to switch it ON and let it pass the Self test and Calibration screens.

The baud rate is set via the SET UP RS232 screen accessed from the SET UP RS232 option on the Options screen. This screen becomes available only when the CEL-502 was fitted before the instrument was switched ON.

Make sure the baud rate settings on the instrument and the communication port options in the software are the same to achieve reliable transfer of data.

NEXT VALUE

GS-16

The following instrument options can be set from the Options screen, which is obtained by using the OPTION key available on any Status screen.

Most of these options can be selected ONLY while in STOP status to avoid corrupting any measurement in progress.

DELETE MEMORY Allows blocks of stored data to be deleted. It may take a considerable time to delete large data blocks.

CALIBRATE Allows a field accuracy check (acoustic calibration) to be performed, see Chapter 6.

Getting Started - CEL-553/573/593 - Page 71

Page 14

SET CLOCK

Allows time and date to be set.

MIC. RESPONSE Allows microphone response to be changed between free field to meet IEC standards and random incidence that meets ANSI standards.

CONFIGURATION Displays the instrument configuration.

LCD CONTRAST Allows the display contrast to be changed.

SET PRINTER Allows the printer output format to be specified as Epson dot matrix or Laserjet compatible so data displayed on the screen can be printed via a CEL-501 Parallel (Centronics) Interface (Chapter 8).

SETUP RS232 Allows the RS232 baud rate to be speci- fied so that stored data can be transferred over a CEL-502 RS232 Interface.

11. Editing Stored Set Ups

OPTIONS DELETE MEMORY CALIBRATE SET CLOCK MIC. RESPONSE CONFIGURATION

SET PRINTER LCD CONTRAST SET UP RS 232 POL. VOLTS SET RUN I. D.

STOPSLM

SELECT

GS-03

POL. VOLTS Allows the 200 V polarising voltage required for condenser microphones to be switched OFF to permit electret microphones to be used (Chapter 4).

RUN I.D. Allows an identity code consisting of a single letter and three numbers to be assigned to each run by means of NEXT VALUE and PREV. VALUE keys.

When switched ON, the set ups marked

will be loaded for each measurement

mode and bandwidth, for immediate use.

Up to seven set ups can be stored for each available bandwidth and mode, giving the following maximum numbers for an instrument without additional applications.

CEL-553: 7 x 3 x 1 = 21,

CEL-573: 7 x 3 x 2 = 42,

CEL-593: 7 x 3 x 3 = 63. Table 1 on page 15 lists the bandwidths, operating modes and measurement parameters available for all instruments in the CEL-500 series.

Each bandwidth has its own directory, where the first entry is an INITIAL SET UP provided by the factory (Figure 1) which can neither be deleted nor overwritten.

Any stored set up can be edited and the changed version used with or without saving. However, if an edited version of the initial set up is to be saved, it must be given a new identity. Set ups other than the initial set up may be overwritten.

Page 72 - Getting Started - CEL-553/573/593

980008e

Screen

Backlight

"Series3 & 2"

PreviousMode

NextMode

Select Screen Entries

Next Screen

Next/ Previous Value

Setup/Review - ScreenOptions

When a set up has been modified for use with no intent to save it, do not press the LOAD key as this will reload the un-modified version.

With the instrument in Stop mode (i.e. not logging data), starting from a Status screen, edit and store a set up as follows.

1. Press or keys sufficient times to display the required mode and bandwidth in the Application Box.

Page 15

Table 1: Bandwidths

Operating Modes &

Measurement Parameters

CEL-5X3.C1/C2 (

CEL-5X3.A1/A2 (

Broad Band Octave & Third Octave

−

⁄

)

−

Real Time Sound Level Meter

Freq Weightings

Time Weightings Exch Rate Q Parameters

2 (from Lin, A & C)

2 (from Slow, Fast & Impulse) 2 (from Q=3, 4, 5 & 6) SPL Max & Min

& IL

eq avg

(with Q=3)

epd

Tm3<m5

L LinPeak/C Peak L TWA (with Q=5 & Slow wtg) SEL L

Environmental Mode (Not CEL-553)

Freq Weightings

Time Weightings Exch Rate Q Parameters

Meas Period Durations

Auto Start/Stop Times Ln values Profiles

2 (from Lin, A & C)

1 (from Slow, Fast & Impulse) 1 (from Q=3, 4, 5 & 6) SPL not stored Max & Min SEL of period

& IL

eq avg

Tm3<m5

or 1 sec L

L LinPeak/C Peak L

0.5, 1, 5, 10, 15, 30 sec 1, 5, 10, 15, 20, 30, 60 min

24 sets 5 1 SecMax

A cumulative result set and set of histograms are ALWAYS stored

Event Mode (CEL-593 Only)

Freq Weightings Time Weightings Exch Rate Q Parameters

Profiles Triggering

Threshold Triggering Delays

1 (from Lin, A & C) 1 (from Slow, Fast & Impulse) Fixed at Q=3 Max Level Time of Max SEL Duration Event L

LinPeak/C Peak 1 SecMax

Manual or Threshold + Delay 40 to 139 dB 1 to 30 sec

⁄

) B1/B2 (

−

1 x Broad & Narrow Band 1 x Optional Broad Band (from Lin, A & C) 1 (from Slow, Fast & Impulse) Fixed at Q=3 SPL Max L

1 x Broad & Narrow Band 1 x Optional Broad Band (from Lin, A & C) 1 (from Slow, Fast & Impulse) Fixed at Q=3 SPL not stored Max L

0.5, 1, 5, 10, 15, 30 sec 1, 5, 10, 15, 20, 30, 60 min

24 sets 5

1 (from Lin, A & C) 1 (from Slow, Fast & Impulse) Fixed at Q=3 Max Level Time of Max SEL Duration Event L

LinPeak/C Peak 1 SecMax Spectrum Profiles Manual or Threshold + Delay 40 to 139 dB 1 to 30 sec

−

⁄

−

)

Note 1: With Series 3 & 2" instruments, period Ln values are calculated when a run is≥1 minute

in length. (Series 1" instruments need at least 4 minutes for broadband and 8 minutes for narrow band.) Cumulative Ln values will be available for display as soon as a broad band run≥5 seconds duration or a narrow band run≥10 seconds duration is complete.

Note 2: Available only with periods of 5 minutes or longer.

Getting Started - CEL-553/573/593 - Page 73

Page 16

2. Press the SETUP key to display the relevant Setup screen (Figure 1) that offers the following options. LOAD: Loads the highlighted set up for use and sets against the entry for default loading next time the instrument is switched ON. STORE: Stores the current set up in the highlighted space and sets . DELETE: Deletes the highlighted entry. If it is in current use, it remains active until another is selected. REVIEW: Displays the current set up.

3. Use or to select an entry.

4. Press REVIEW to access a setup for editing. Table 2 suggests settings for some typical measurement tasks.

5. Use cursor keys to select entries and VALUE keys to edit them.

6. When the more legend is shown, access further relevant screens by pressing or .

Table 2: Typical Measurement Tasks

Task Suggested Settings

Determine Noise Exposure of Employees Working Near an Impact Press

Measurements to Aid Selection of Hearing Protection Suitable for the Employees Above

Reduce Noise Levels in Location Adjacent to a Noise Source

Perform Annual Octave Band Noise Survey in Factory at 102 Locations

Investigate Intermittent Industrial Noise Disturbing a Quiet Neighbourhood

Police Cumulative Noise Limits Set for a Quarry

Determine the Effect of Running New Trains Through Quiet Countryside

Use broad band ENV with 1 second period and EVT enabled, Measure Leq and LinPeak, Inspect period profiles, Check events.

Use Store SPLmax spectra followed by L Apply data to protector selection chart.

Use Compare stored SPL spectra from source with SPL spectra from location, Check for noise leaks/improvements.

Use Store L

Use enabled, Measure L background noise, Check for events.

Use broad band ENV with 60 minute period, Measure L L

Use enabled, Measure L as L Check event frequency profiles, Use data to find projected daily L

SLM

LIN FAST

(2nd BARGRAPH ONLY)

'A'

RECORD TIMER OFF

REVIEW

Q=3

PREV VALUE

SETTINGS

7. Select and edit entries as in 5 and 6 above.

8. When all entries have been made, press ESC key to recall the Set Up Directory.

9. Select a store location (This must be done).

10. Press STORE key to save the edited version.

⁄

octave band real time SLM,

⁄

octave band real time SLM,

⁄

octave band real time SLM,

spectra snapshots at each location.

⁄

octave band ENV with 10 minute period and EVT

and determine Ln spectra values such as L

, SPLmax and determine Ln values such as

background noise.

⁄

octave band ENV with 10 minute period and EVT

, SEL and determine Ln spectra values such

background noise,

spectra,

from train frequency.

STOPSLM 1

NEXT VALUE

GS-17

Page 74 - Getting Started - CEL-553/573/593