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10

Calibration Software

When the microphone or the replacement microphone cause an offset in 
the reading measurement, the software needs to be calibrated, To begin 
this process click on this “ ” icon. The following window will appear:

 

The “Ajustment Value” is a single calibration value,  ranging from -12.5 to 
12.5, the value 1.0 is equivalent to 1dB.
Assuming that the reading is 0.5dB higher than the standard value, the 
“Ajustment Value” should be set to -0.5.

Press “OK”. The following window will appear:

Summary of Contents for ST-173

Page 1: ...reedinstruments www com Model ST 173 Sound Level Datalogger Instruction Manual...

Page 2: ...r ate or service the meter Use the meter only as specified in this manual Environment conditions Altitude lower than 2000 meters Relatively humidity 90 RH Operation Ambient 0 40 C Maintenance Cleaning...

Page 3: ...c start Notes In NORM Normal mode 20 readings will be picked one reading per 50ms and the average value of the 20 readings will be stored At the same time a peak max a peak min will be picked wihtin a...

Page 4: ...y Full Indication Yellow LED flash Data Output USB data traffic Power One 3 6V battery specs 14250 or 1 2AAA Electric Current Normal working is approximately 6mA Battery Life Approximately 200 hours O...

Page 5: ...l working indication cycle time can be setup from the software Mixed Flash Red Green Yellow DataLogger is starting to measure automatic mode Green LED Datalogger start to measure in manual mode will f...

Page 6: ...ates it s working by flashing with the frequency setup in the software 5 When the DataLogger s memory is full the yellow LED will flash 10s time 6 As a measurement is being taken if the measured value...

Page 7: ...e using it Software Installation Operation 1 Start windows 2 Insert the CD into the CD ROM 3 Run SETUP EXE installation program in file DISK1 install it to the directory of C Program Files Sound Datal...

Page 8: ...D Flash for Hi and Low Alarm High and low alarm indicates whether you need the LED Flash or not LED Flash Cycle Setup The flash frequency of the indicating LED Manual Automatic Manual or Automatic mod...

Page 9: ...0 sampling data PEAK MAX PEAK MIN means the MAX or MIN degree of all the measuring values not the average value PEAK MODE Sound MAX Sound MIN means the MAX degree or MIN degree of the 20 sampling data...

Page 10: ...eeds to be calibrated To begin this process click on this icon The following window will appear The Ajustment Value is a single calibration value ranging from 12 5 to 12 5 the value 1 0 is equivalent...

Page 11: ...will not be able to store data until the battery has been replaced and the stored data has been downloaded to a PC Only use 3 6V lithium batteries Before replacing the battery unplug the unit from th...

Page 12: ..._______________ ________________________________________________ ________________________________________________ ________________________________________________ _____________________________________...

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