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51 Communications
Digital outputs and SPL
Models SE and DL
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-Out screen, 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.