3M SE-400 user manual Turning on, Softkeys, Screen indicators

5

Turning on

Softkeys

Turning on

To turn on the SE-400 Series, press the	key until the start screen appears. Note: the warm-up is 10 seconds.
Softkeys

The softkey menus provide additional/extension menus on the display and may be available in the measurement, setup, and calibration screens. See Table 2-1 for details.

Softkeys Explanation

	Setup icon – The setup icon is used to access the main menu options including: unit information, settings,
	calibration, memory, time-date, communications, and security (for secure run and secure setup modes).
FS	Fast or Slow Response Time - The response time setting determines how quickly the unit responds to fluctuating
	noise. Typically, noise is not constant. If you were to try to read the sound level without a response time, the readings
	would fluctuate so much that determining the actual level would be extremely difficult. While the terms slow and fast
	have very specific meanings (time constraints), they work very much as you would expect. The fast response would
	result in a more fluctuating sound level reading than would the slow response.
ACZ	A, C, or Z Frequency Weighting - These are frequency filters that approximate the equal loudness response of
	human hearing at low, medium, and high SPL’s. A frequency weighting is the most commonly used filter defined in
	the international standard IEC 61672:2003. Common applications of A weighting include industrial noise applications
	and community noise regulations. The A frequency weighted filter makes the sound level meter respond closer to the
	way the human ear responds to noise at lower levels. It attenuates the low frequency noise below several hundred
	Hertz as well as the high frequency above six thousand Hertz. C frequency weighting is intended to represent how
	the ear responds to very high levels. Z weighting is a type of flat response.

Printer icon - is used for an add-on feature, referred to as the SoundPatrol (available on SE-400 Non-IS models only.) This feature enables one to print to a hand-held printer while measuring or after a run (or session). Note: this may be used for noise enforcement situations.

CAL	CAL – Cal, or Calibration screen, is used for calibrating the SE-400 Series.
LOCK	TLOCK – Shortcut to the secure modes screen. Enables and disables secure and setup modes.
	Up Arrow indicator: Used in the calibration screen to increase the calibration value.
	Down arrow indicator: Used in the calibration screen to decrease the calibration value.

Table 2-1: Softkeys explained

Screen indicators

The screen indicators, located at the top of the display, are a notification tool to alert the user of operational functions. See Table 2-2 for details.

Indicators			Explanation
			Secure/Lock indicator - appears if security for run or setup is enabled.
		OL	Overload indicator – appears whenever the level measurement exceeds the range of the instrument.
		UR	UnderRange indicator– appears whenever a level measurement is below the range of the instrument.
			Run indicator- appears when a session is running (measuring integrating measurements.)
			Stop indicator- appears when the current session is stopped.
	00:00:00
			Run Time: displays the current elapsed logged session run time in hours, minutes, and seconds.
		/
			Battery charge status- blinks when the battery is low and needs charging. The battery icon shows the
			status/level of the internal battery. A full battery indicates the SE-400 Series is fully charged where as a non-
			shaded battery icon indicates the battery power is low. When charging, the battery icon will appear as a
			scrolling, shaded battery charge icon.

Table 2-2: Screen indicators

Sound Examiner SE-400 Series