3M SE, DL Communications, Digital outputs and SPL,  Managing SPL digital outputs See -13 above

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Communications

Digital outputs and SPL

Digital outputs and SPL

The instrument can also be configured to use a digital output to signal if the current SPL measurements exceeds a specified level.

Managing SPL digital outputs (See Figure 4-13 above)

1.Open the Digital-Outscreen, by selecting Setup from the start screen.

(Press arrows to select Setup and press .

2. Press to select Output 2 or Output 3, then press to move the cursor to the data field at the right. You have two options for each output.

•OFF - Disables SPL tracking for that output.

•dB level - Enables and shows the current setpoint for that output.

3.Press to toggle between these options. If you select “Off,” press

to exit the data field, then skip to the last step of this procedure. If you enable the trigger, continue below.

4.	Press	if you wish, to change the setpoint.
5.	Press	to exit the data field.

6.If satisfied with the trigger logic, skip to the last step of this procedure. To toggle the logic setting, continue below.

7.	Press	to select Logic 123, then press	to enter the first data
	field. The third and fourth data fields are for Output 1 and Output 2,
	respectively.
8.	Press	to select the appropriate data field.
9.	Press	to toggle the logic state. The displayed logic state is for SPL

that equals or exceeds the setpoint.

10.Press to exit the Logic 123 data fields.

11.If finished working in the Ext-Trigger screen, press to exit the screen.

Communications

The SoundPro has both USB and RS-232 communication channels. The majority of users should only require USB communications, which is vastly faster than the RS-232 channel which is intended for low speed modems GPS applications, and/or log-to-port applications but may be used to communicate to a PC as well. The optional 053-729 Serial Cable is required for RS-232 communications.

The SoundPro has two USB communications modes “QSP/Serial and “Mass Storage.

Models SE and DL