sound level meter Frequently Asked Questions

Printer connection and settings

Digital Printer DPU-414

The LA-1240/1250/1350/4350 can be connected to the separately sold digital printer DPU-414.
By connecting the sound level meter and the digital printer DPU-414 via the AX-5042 printer cable, it becomes possible to print out various measurement data and data stored in memory using the following two modes.

When using the digital printer DPU-414, please purchase the separately sold dedicated AC adapter as well.
Additionally, for handling the digital printer DPU-414, please refer to the instruction manual included with the DP-414 along with this document.

How to connect with the digital printer DPU-414

As shown in the diagram, please connect the sound level meter's RS-232C connector to the digital printer DPU-414 using the printer connection cable (AX-5042).

Procedure for Setting Communication Conditions

The communication conditions for LA-1240/1250/1350/4350 and DPU-414 are set at the factory default, allowing printing without changing the conditions on the printer side. However, if the communication conditions have been changed for any reason, please follow the steps below to reset the communication conditions.

1. When the panel switch [A/C/FLAT (RS232C)] is pressed while turning the power ON, the RS-232CON mark is displayed on the LCD screen, and the communication speed setting value displayed at the bottom of the LCD screen blinks.
2. Set the values in the order of communication speed, terminator, and flow control.
   Press the panel switch [LEVEL (▲・▼)] to toggle the value to be set.
   The setting items (flashing) can be switched by pressing the panel switch [FAST/SLOW (NEXT)].
3. After completing the settings, press the panel switch [START (ENTER)].
   The communication conditions with the printer will be reset and the sound level meter will start.

communication speed

Set the same baud rate as that of the DPU-414.

set value	01	02	03	04	05	06
Transfer speed (bps)	4800	9600	19200	38400	57600	115200

Terminator settings

When connecting to DPU-414, set it to '01'.

set value	01	02	03
Terminator	CR+LF	CR	LA-200

Flow control

When connecting to DPU-414, set it to '01'.

set value	01	02
flow control	on	off

Print of measurement data.

Measurement data, internal memory data, and various measurement data during timer measurement can be printed from an external printer connected to the sound level meters LA-1240/1250/1350/4350. During printing, an RS-232C ON mark indicating the transmission of print data will be displayed on the LCD screen.

Print of measurement data

Pressing the panel switch [PRINT] on the sound level meter LA-1240/1250/1350/4350 transfers the measurement data to the connected external printer (such as the DPU-414) and starts printing.

Print of memory data and timer measurement data.

For the sound level meters LA-1240/1250/1350/4350, when the panel switch [PRINT] is pressed for more than 0.5 seconds during memory recall or timer measurement (except for LA-1240), the RS-232CON mark will blink, and auto-printing will start.

• During manual memory recall, data will be printed continuously from the currently selected address to the address where the data is stored.
• During block memory recall, data will be printed continuously from the currently selected address to the last data of the block memory address that was measured under the same conditions.
• During timer measurement, the results of each measurement will be printed out every time a measurement is completed.
Notice

Automatic printing during timer measurement is possible when the measurement cycle setting is 10 seconds or more.

Print Example and Listed Items

The items to be printed are as follows.

Notice

The font used in the printed example is for explanatory purposes. Therefore, it may differ from the font that will actually be printed. Please be aware of this.

Example of instantaneous value display screen print.

Example of printed screen for cumulative value display.

Example print of manual memory recall.

Example print of block memory recall.