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Summary of Contents for Campbell Norsonic 140
- Page 1 Norsonic 140 Set-up Guide & Features...
- Page 2 Front/Standby Screen Explained Current Measurement Duration Display Range Values. Adjusted using inc & dec keys. Note this Does not alter the measurement Current Date Range Current Time Time Constant & Function Graphical dB reading (Currently Fast Sound Pressure Level). Adjusted using keys 8 for Time Constant and 3 to change display function A-weighted and 2...
- Page 3 Screen Shots – Storing Method Automatic – Automatic saving, Repeat – Repeat measurement duration and save until stopped, Syncro – Synchronise with the clock, Manual – Waits for Store/Record key to be pressed before saving.
- Page 4 Screen Shots - Handswitch Light Activation To make sure the handswitch light comes on go into 1) Instrument menu – 2) IO/Print and then press button 1 for the Dig IO ports. Make sure DO-1 is set to REC using the inc or dec keys at the top of the meter.
- Page 5 Screen Shots - Clock Make sure ‘set clock’ is highlighted before pressing enter.
- Page 6 Screen Shots – 2 Network...
- Page 7 Screen Shots – Input & Corrections For most assessments the input type should be standard with the Pol. Volts set to On. If very low levels are measured on the front screen then it is likely that the voltage to the microphone is turned off. Active corrections are displayed by letters at the base of every screen.
- Page 8 Screen Shots – Reference Tone The reference tone is used to help calibrate the volume that audio recordings are played back in order to create a ‘real life’ situation when listening. This is activated using the Cal button when a measurement is taking place.
- Page 9 Screen Shots – Measurement Durations To move between boxes – type the number, press enter, use arrow keys to move to next box. Resolution reduced using ‘inc’ and ‘dec’ keys.
- Page 10 Screen Shots – L(t) Parameters Press button 5 to scroll through screens (there are 3 in the advanced Lt option) 1 = will be stored every second (can plot level vs time graph) 0 = will only appear in the global file...
- Page 11 Screen Shots – Frequency Mode 1/3 = 6.3Hz – 20kHz (standard microphone measurement capabilities) 1/3w = 0.4Hz – 20kHz (for use with accelorometer)
- Page 12 Screen Shots - Trigger Manual – Start key starts measurement, Clock (press 1 when highlighted) – measurement starts at specified time and runs for measurement duration, External – Link to bluetooth, 3G etc, Level Above - (press 1 when highlighted) set dB level to exceed before measurement starts.
- Page 13 Screen Shots - Trigger External is the handswitch audio trigger. Level gives you a level above trigger. Press 1 to access settings. Delay is the pre-trigger that can be up to -99seconds.
- Page 14 Screen Shots – Level Trigger To activate audio recordings without the handswitch you can use the level trigger option. This is in set-up 6) Trigger – 2) Record Trigger and then change the external to off (handswitch) and the level to on. Press button 1 with the Level ‘On’...
- Page 15 Screen Shots – Recording Settings...
- Page 16 Saving Settings & Recalling When in the main standby screen press the Store/Record key and a set-up number will appear at the top of the screen with a ‘S’ to indicate it has been saved. To load the set-up press the ‘Recall’ key and make sure the letters In the top right say ‘INT’...
- Page 17 Button 0 – Battery Indicator V indicates the current voltage. This will be around 5 for batteries and around 12 for mains supply. T indicates the time the meter has been on batteries for. This is reset when new batteries are installed.
- Page 18 Notes...
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