Extech Instruments 407355 User Manual page 4

Meter Description
1. Microphone (lapel clip not shown)
2. Microphone cable
3. Microphone connector
4. LCD display
5. Push-buttons:
ON-OFF Press to turn the meter ON; Press and hold
to turn the meter OFF.
RESET This button has a variety of uses including
clearing stored data and accessing the Programming
mode as described in the manual.
RUN Press to begin a noise survey test in Dosimeter
mode or datalogging in SLM mode. Also used as the
Left Arrow in the Programming mode
CLOCK Press to view the Date and Time. Also used
as the Right Arrow in Programming mode
MODE Press to select ELAPSED TIMER, SLM (dBA)
mode, or noise survey (%DOSE) mode. Also used as
the Down Arrow in the Programming mode
EVENT Press to select a memory bank (E1 through
E5). Also used as the Up Arrow in the Programming
mode
6. RS-232 PC Interface plug
7. RS-232 PC Interface jack
8. Calibration potentiometer
9. Battery compartment screw
10. Belt clip / Battery compartment cover
11. Battery compartment
12. Microphone jack
13. Housing screws (service personnel only)
4
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407355 Version 2.4 9/07