background image

 
 

The DISPLAY button displays the parameters that are being measured. Repeated 
pressing of the 

DISPLAY

 button scrolls round the parameters listed in the table below.        

  

The display will also show the following message when appropriate: 

 

          ** UR **  

when the instrument is Under-range 

          ** OR **  

when the instrument is Over-range. 

               (Except GA256 since no range change facility present.) 

 

The display will flash when the instrument is Under-range, Over-range or when the Crest 

factor is being exceeded, indicated by OVERLOAD.  

You may leave the display menu by pressing any other button. 

  

The table shown below lists the display parameters available on each of the  Popular 
Range units as they appear by repeated pressing of the 

DISPLAY

 button. 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

 

 

The table on the following page is a breakdown of the display parameters and is 

accompanied by an explanation of each one. 

DISPLAYING PARAMETERS 

 

All 

GA213 

GA215 

GA256 

Lp (SPL) 

Lp (SPL) 

Lex 

Lmx 

Leq 

Plx 

Pmx 

Elapsed Time 

DO % 

Elapsed Time 

Lmx 

Pr % 

Overload (if triggered)  Pmx 

Mr % 

 

Lex  

Elapsed Time

 

 

Le 

Pmx 

 

Overload (if triggered)  Psq

 

 

 

Overload (if triggered)

 

 
 
 

 
 

The Criterion and Exchange level can be changed  by the use of the 

MENU 

button. 

 
Press 

MENU 

repeatedly until                     CRIT/EXC                   is displayed.   

 

 
Press 

OK 

and the instrument will display the options available for  CRIT/EXC  

SETUP. 

 

To change the CRIT/EXC use either the up arrow or down arrow button.  Pressing 

either of these two buttons allows you to scroll through the four available criterion 

and exchange choices, 90/3, 85/3, 90/5, or 85/5.  

 

Note:  

The symbol 

>

 indicates the current selection as you move around the 

criterion/exchange options. 

CRITERION/ EXCHANGE 

 GA256 

11 

Summary of Contents for GA213

Page 1: ...Notes ...

Page 2: ... Service Castle Group Ltd design and manufacture precision instruments which if treated with reasonable care and attention should provide many years of trouble free service In the event of a fault occurring during the warranty period the instrument should be returned to Castle Group Ltd in its original packaging or to an authorised agent Please enclose a clear description of the fault or symptom D...

Page 3: ...r the operation of the unit are as follows Temperature 10 C to 50 C Relative Humidity 30 to 90 Protect the unit from dust water extremes of temperature and humidity direct sunlight and air with a high salt or sulphur content Always turn the unit off after use Remove the battery from the instrument if it is not to be used for an extended period several days Do not use any solvents or cleaning agent...

Page 4: ...r GA601 GA607 and microphone Corrected level Actual level 0 05 t 20 Where t is the temperature in C Effects of Humidity Less than 0 5 dB over the range 25 to 90 relative humidity provided there is no Condensation relative to the value at 50 relative humidity and 40 C Storage range 0 to 90 relative humidity in the absence of condensation Vibration Effect From 20Hz to 1kHz at 1ms 2 no noticeable eff...

Page 5: ...essure 94 0 dB at 1kHz nominal reference level 55 120dB reference range Reference direction of incidence for all microphones perpendicular to the front face diaphragm surface of the microphone Detector Characteristics RMS and Peak Warm up time 10 minutes Operating range 10 C to 50 C Warning DO NOT subject the instrument to temperatures greater than 70 C or less than 20 C for any length of time 16 ...

Page 6: ...s press that button E g OK means press the OK button Since this manual covers the operating instructions for three instruments the shaded areas of the title serves to inform the user which functions are present on your instrument E g The following title informs you that this function is only applicable to the GA213 215 2 CHANGING RANGE GA213 215 Linear Operating Range GA213 GA215 65dB GA256 67dB R...

Page 7: ...ment for use a heavy duty alkaline battery type 6LR61 should be fitted such as a Procell Duracell MN1604 Ever Ready 6LF22 Gold Seal or equivalent The battery door is located on the bottom left hand side of the instrument Open the battery door cover by sliding the cover downward towards the bottom of the instrument The cover will now swing open exposing the battery compartment Insert the battery ob...

Page 8: ...configurations Press STATUS BAT 80 Battery status Press STATUS dBA SLOW Frequency Time weighting selected Press STATUS VER 1 0 Firmware version number Press STATUS WWW Cast website scrolling Press STATUS RUNNING SWITCHING ON AND OFF All 4 ACTIVATING BUTTONS All 13 The individual characteristic applies to each instrument unless specifically worded otherwise Instrument Standards GA213 IEC 61672 1 20...

Page 9: ...04dB relative to 20µPa pressure at a frequency of 1kHz Turn the instrument on by pressing the POWER button Press STATUS to check the battery condition Replace the battery if the indication is low Press MENU CAL OK Press OK and the instrument will now display the previous calibration level e g 94 0 The calibration will be performed at the selected level e g 94 0dB but may be changed in 0 1 dB steps...

Page 10: ...PLAY button The table on the following page is a breakdown of the display parameters and is accompanied by an explanation of each one DISPLAYING PARAMETERS All GA213 GA215 GA256 Lp SPL Lp SPL Lex Lmx Leq Plx Pmx Elapsed Time DO Elapsed Time Lmx Pr Overload if triggered Pmx Mr Lex Elapsed Time Le Pmx Overload if triggered Psq Overload if triggered 6 The Criterion and Exchange level can be changed b...

Page 11: ...ailable weighting choices A SLOW A FAST C SLOW or C FAST Note The symbol indicates the current selection as you move around the weighting options CHANGING RANGE GA213 215 10 FREQUENCY TIME WEIGHTING GA213 215 DISPLAY DESCRIPTION INSTRUMENT 93 7dBC Level Pressure Lp GA213 215 LEQ 93 7 Displays the LEQ GA215 00 01 33 Run time duration All Lmx 97 3 Maximum Lp GA215 Pmx 98 8 Maximum Peak GA213 256 DO ...

Page 12: ... button to return to LP mode Press PAUSE PLAY once PAUSED All functions can be held so that they do not update by pressing the PAUSE button Once PAUSED the display may be read as normal allowing the user to take note of any required readings For normal operation of the instrument to continue press the PAUSE PLAY button once more and the instrument will briefly show PAUSED before returning to the c...

Reviews: