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SL355-en-GB_V1.8 8/17
6. Preparation
6.1 Getting Started
1. Power the instrument by momentarily pressing the power/menu button at the upper left side of
the keypad.
2. When the unit is turned on, the model number (355) appears briefly on the left side of the LCD
and the firmware version (1.1, for example) appears on the right side.
3. The meter defaults to the SLM mode (
SLM
icon is shown) where the main display indicates the
sound pressure level (SPL) in db, the A/C frequency weighting setting, the F/S response time
setting, and the battery status icon (an up or down arrow will be
visible if the current reading is above or below the selected range
respectively). See screen shot diagram.
4. If the meter will not switch on, check that the batteries are installed
and are fresh.
5. To turn the meter OFF, press and hold the power/menu button for
three (3) seconds.
6. The SL355 can be used as a Sound Level Meter or a Dosimeter/Datalogger.
7. Note that the four arrow buttons are ‘smart’ navigation keys. For any given meter mode only the
active
arrow buttons appear on the LCD.
6.2 Battery Installation, Replacement, and Disposal
1. Slide the rear battery cover off of the meter.
2. Remove the old batteries (if applicable) and insert three (3) ‘AAA’ 1.5V
batteries. Ensure that the battery orientation and polarity are correct. Do
not mix fresh and partially used batteries.
3. Carefully re-assemble the meter before use.
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate
collection sites, the retail store where the batteries were purchased, or wherever
batteries are sold.
Disposal:
Do not dispose of this instrument in household waste. The user is
obligated to take end-of-life devices to a designated collection point for the disposal
of electrical and electronic equipment.
6.3 Battery Status
The battery status icon appears as empty when the battery is depleted. The battery symbol
indicates the remaining capacity in numbers of bars or segments, as follows:
6.4 Microphone installation
Insert the microphone plug into the connector on the top of the meter as shown in
accompanying diagram. Turn clockwise to secure in place; be careful not to over-
tighten.
