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Extech Instruments 407768, User Manual

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Extech Instruments 407768 User Manual Download Page 5

407768   Version 2.0   06/06 

5 

PC Interface 

The optically isolated RS-232 PC Interface port is located in the output/calibration 
compartment situated on the lower right side of the meter. The supplied Data Acquisition 
Software package includes Windows

TM

 95 / 98 / NT / 2000 / XP compatible software and a 

meter-to-PC interface cable. Instructions for use can be found on the included software 
CD. 

 

Important Note on the Automatic Power OFF feature 

The 407768 Sound Level Meter has an AUTO POWER OFF feature that turns the meter 
off after approximately 10 minutes. This feature must be disabled before starting a 
datalogging session to avoid having the meter automatically shut off in the middle of a 
session. Disable it by pressing the REC MAX/MIN button to activate the Record mode. 
While the meter is in the Record mode, the AUTO POWER OFF feature is disabled.

 

Summary of Contents for 407768

Page 1: ...User s Manual Digital Sound Level Meter Model 407768 ...

Page 2: ...0 to 130dB Manual Ranges 30 to 80dB 50 to 100dB 80 to 130dB Frequency weighting A and C Programmable Applicable standards ANSI IEC Type 2 Resolution 0 1dB Maximum Minimum record Highest and lowest readings are stored for later recall Data Hold Displayed reading is held when HOLD key is pressed Max Hold Highest reading displayed only Response time Fast 125ms Slow 1s Programmable AC Analog output 0 ...

Page 3: ...play on the lower left hand area of the LCD Note With A weighting selected the meter responds like the human ear boosting and cutting the noise amplitude over the frequency spectrum see Appendix A weighting is used for environmental measurements OSHA regulatory testing law enforcement and workplace design Select C weighting for flat response measurements no boost or cut C weighting is suitable for...

Page 4: ...her reading is encountered the display will update 3 Press the MAX HOLD button again to de activate this feature The PH icon will extinguish 4 Note that Max Hold is not available while the meter is in the Max Min Record mode Max Min Data Recording The Max Min feature stores the maximum reading and minimum reading while the user takes measurements The Max and the Min readings can later be recalled ...

Page 5: ... Instructions for use can be found on the included software CD Important Note on the Automatic Power OFF feature The 407768 Sound Level Meter has an AUTO POWER OFF feature that turns the meter off after approximately 10 minutes This feature must be disabled before starting a datalogging session to avoid having the meter automatically shut off in the middle of a session Disable it by pressing the R...

Page 6: ... six month limited warranty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be...

Page 7: ... 50 HP Siren 100 Jet take off 200 Riveting machine Subway 20 Pneumatic drill 50 Vacuum cleaner 10 Large store Small office Residential area night Whisper 5 Threshold of hearing Chain saw Boiler room Freight train 100 Speech 1 Large Office Residence Sound studio more infor for Extech 407768 Phone 01235 838 555 Email cs airconcern co uk Web www airconcern co uk Air Concern Ltd Building 173 Curie Ave...

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