407355 Datasheet, PDF (9/17 Pages) Extech Instruments Corporation. – Noise Dosimeter with PC Interface

PC Interface Operational Modes
The PC Interface for the Model 407355 is used for both the Sound Level Meter (SLM) and the
Noise Exposures Survey modes of meter operation:
Sound Level Meter (SLM): There are 2 modes, Data Acquisition and Datalogging. In
‘Data Acquisition’ mode, the meter is connected to the PC and used as a Sound Level
Meter. The PC captures the SLM readings (0.2 to 60 sec. sampling time), displays them
in a variety of formats, and saves them to a file. In ‘Datalogging’ mode, the meter is used
to capture up to 8800 readings in its internal memory (0.1 to 6553 sec. sampling time).
The meter is disconnected from the PC while this function is performed. After the
readings are captured, the meter is connected to the PC and the data is transferred from
meter to PC.
Noise Exposure Survey mode: In this mode, the meter is used normally as a Noise
Survey Dosimeter. The meter is disconnected from the PC while the noise survey is
performed. After the survey, the meter is connected to the PC and survey data is
transferred from meter to PC.
Each mode is discussed below:
Sound Level Meter (SLM) Data Acquisition mode
1. Connect the meter to the PC using the supplied interface cable.
2. Run the DOSE software program.
3. Use the meter in the SLM mode as described previously.
4. Use the MAIN SOFTWARE and CONTROL PANEL windows to operate the meter,
view the readings, and save the data file. The MAIN and the CONTROL PANEL
windows are described in the Software Reference section.
Sound Level Meter (SLM) Datalogging mode
1. Perform a Datalogging operation as described previously.
2. After the test, connect the meter to the PC.
3. Run the DOSE software program.
4. Click the MEMORY tab in the MAIN software window. The MEMORY window will open
and the readings will be copied from the meter to the PC.
5. After the data is downloaded, the Recorded Sets will be listed. Click an individual set
and a detailed view of the data will appear.
Note: Datalogging sampling time can be set from 0.1 to 6553 seconds. Click in the Interval
window, enter a time, and press the Return Key to accept the sampling time.
Noise Exposure Survey Data transfer to PC
1. Perform a Noise Survey as described previously.
2. After the test, connect the meter to the PC.
3. Run the DOSE software program.
4. Click the EVENT tab in the MAIN software window. The EVENT window will open as
shown in the Software Reference section.
5. Click on the BANK tab in the EVENT window and select an individual bank (E1, E2,
E3, E4, or E5) or all of the banks (E1-E5). The data will appear in the relevant bank
column in the EVENT window. Alternatively, the user can click on the column of the
Bank in order to download the noise survey results for a particular memory bank (E1
through E5).
9
407355 Version 2.4 9/07