Checkline TI-25DL-MMX User Manual download pdf (Page 14)

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4. Press the transducer against the sample piece, at the first/second

calibration point, making sure that the transducer sits flat against the

surface of the sample. The display should show some (probably incorrect)

thickness value, and the Stability Indicator should have nearly all its bars

on.

5. Having achieved a stable reading, remove the transducer. If the displayed

thickness changes from the value shown while the transducer was

coupled, repeat step 4.

6. Press the CAL key. The IN (or MM) symbol should begin flashing.

7. Use the UP and DOWN arrow keys to adjust the displayed thickness

up or down, until it matches the thickness of the sample piece.

8. Press the PROBE key. The display will flash 1OF2. Repeat steps 3

through 7 on the second calibration point. The TI-25DL-MMX will now

display the sound velocity value it has calculated based on the thickness

values that were entered in step 7.

The TI-25DL-MMX is now ready to perform measurements within

this range.

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12.0 RS232 SERIAL PORT

The TI-25DL-MMX is equipped with an RS232 serial port. Using the accessory

cable (part# N-306-0010), the TI-25DL-MMX has the ability to

connect to a computer, or external storage device. The following section outlines

the procedure for connecting the TI-25DL-MMX to a computer, and how to col-

lect data using any standard communications program:

12.1 Connecting To a Computer

1. Connect the accessory cable (part# N-306-0010) to the 2-pin jack located

on the bottom of the TI-25DL-MMX, and the 9-pin connector to a serial

port on the computer.

2. Start the communications software that will be used to collect the

measurements (i.e. Microsoft Windows 3.1 -Terminal, or 95, 98,Me,

XP— HyperTerminal).

3. Setup the communications software using the following parameters:

Data Bits -8, Parity -None, Stop Bits -1, Baud Rate 1200 (to print

a report), or 9600 to transfer data file.

Note: A report can be printed to a communications program (i.e.

HyperTerminal), or printed to a serial printer using 8.5” x 11” paper.

4. Set the communications software COMM port to the port number that

the TI-25DL-MMX is connected — direct comm1, comm 2, etc.

5. Proceed to the section 13.0 Data Logger.

Note: Communications software packages generally have the ability to

capture the screen data to a common text file. This text file, containing the

measurements, can then be imported into any common spreadsheet program

(i.e. Excel, Quattro Pro, Lotus123) for further reporting requirements.

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