Peruse over the general overall features of that Casella 620 series as well as the specific differences between the Casella 620, 621, and its variations.

Investigate the Casella 621 specifications. Listed are the standards, features, capabilities, and physical properties of the Casella 621 sound level meter.

Use AA batteries, a Mains 12 volt DC charger, or a USB cable for Casella 621 power supply when conducting a workplace, industrial or environmental noise survey.

Understand the Casella 621 Interface keys to operate the instrument as well as the color coded menus to signify what mode the sound level meter is in.

Properly set the Casella 621 Time and Date before your sound level meter survey to ensure accurate and organized measurement runs. Calibrate the time and date with these easy tutorial.

Understand procedures of Casella 621 Calibration to ensure the accuracy and creditability of your sound level meter survey. Calibration should be done before and after each measurement run.

The Casella 621 has four display views and six predefined Casella 621 Measurement views and two user defined measurement views. Learn how to navigate and pick/alter these views.

Want a sound level measurement run to last a specified time? Enter Casella 621 Run Duration menu and input a time duration from 1 second to 24 hours for your noise testing survey.

Navigate and view the Casella 621 memory result screens. In addition, learn to clear the Casella 621 sound meter memory or delete a single measurement run.

Open the Casella 621 connection's panel to access the instrument's three ports: a power input port, a Mini B USB Port, and the AC/DC output port. Learn about the importance and functions of each port.

Learn how to transfer Casella 621 data from the noise testing equipment to a computer via USB cable. Also, learn how to access the System Tools menu to write, recover, and delete the USB memory.