Extech Instruments 407355-NIST 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, dBA (SLM) 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)
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