Manual Encoding of Calibration Factors

 

SCOPE:

 

This procedure applies to all DTM-151-S units with software version 7.0 and above and where calibration info has been corrupted or erased.

 

Note:

 

This procedure is not applicable if any physical/parts modification was made or the original Analogue board serial number was changed on the DTM unit. Likewise, if unit was subjected to extreme pressure, sparks, or mishandling, unit must be sent back to Group3 for total re-calibration.

 

STEPS:

 

  1. Make the original Calibration Certificate handy. The calibration info is listed on it.

  2. Attach a working 4-range, Group 3 probe (LPT-141, MPT -141, LPT-231, MPT-231).

  3. On the DTM serial board, set switches 2 and 3 to ON on DIP switch SW2.

  4. Attach fibre optic cable to port (if FTR is used) or the RS-232 serial cable connector from the terminal to DTM unit (if RS-232 is used). Refer to pages 3-4 to 3-8 of the user’s manual on how to set up the communication. Additional set-up information provided on pages 3-9 to 3-12.

  5. Power on the DTM. The terminal emulator should display the DTM model and software version. It also shows that the DTM unit is communicating with the emulator.

  6. Press “CTRL+X” in succession to “Reset” the unit. Parentheses are omitted when typing the commands.

  7. Type “*CALIBRATE” to set DTM on calibrate mode.

  8. Press “D” on keyboard to display the current calibration info of DTM.

  9. Type “ERASE” to erase the old calibration factors of the unit.

  10. Type “D” to verify that the calibration factors are erased. See example below.

 

Example:

Below is sample calibration info of a corrupted/erased EEPROM chip that would come out on display.

                              Range 0           Range 1           Range 2           Range 3           Temperature

Mfg Zero (G)           0.000               0.00                  0.00                  0.00                     0.00

Mfg Cal               1.000000          1.000000           1.000000         1.000000            1.000000

 

Modifying a Mfg Zero Info of a Specific Range

*This is done while still on calibrate mode.

Let’s assume the following calibration factors for R0:

Mfg Zero= 1.653

Mfg Cal= 1.009150

 

  1. To manually change the calibration info of Zero reading at Range 0 from 0.000 G to 1.653 G, do the following:

 

  1. Type “R0” to select the range. The range indicator LED is shown on the display window.

 

From the keyboard, type in “SZ1.653” and press ENTER.

 

Press “D” to show the calibration info and it must show a new value of 1.653 on Range 0.

 

                              Range 0           Range 1           Range 2           Range 3           Temperature

Mfg Zero (G)          1.653                 0.00                  0.00                  0.00                    0.00

Mfg Cal               1.000000          1.000000           1.000000         1.000000            1.000000

 

*** Do the same for other ranges.

 

 

Modifying a Mfg Cal Info of a Specific Range

  1. To change the calibration info of Cal reading of “Range 0” from 1.000000 to 1.009150, do the following:

 

  1. Type “R0” to select the range. The range indicator LED is shown on the display window.

 

From the keyboard, type in “SC1.009150” and press ENTER.

 

Press “D” to show the calibration info and it must show a new value of 1.009150 on Range 0.

 

                              Range 0           Range 1           Range 2           Range 3           Temperature

Mfg Zero (G)        1.653               0.00                 0.00                 0.00                 0.00

Mfg Cal                 1.009150         1.000000         1.000000         1.000000         1.000000

 

*** Do the same steps for other ranges.

 

 

 

 

Modifying a Mfg Zero Info of Temperature

*This is done while still on calibrate mode.

Let’s assume the following calibration factors for the Temperature:

Mfg Zero= -2.2

Mfg Cal= 1.022155

 

  1. To change the calibration info of Zero reading of “Temperature” from 0.00 to -2.20, do the following:

 

From the keyboard, type in “STZ-2.20” and press ENTER.

 

Press “D” to show the calibration info and it must show a new value of -2.20 on Temperature column.

 

                              Range 0           Range 1           Range 2           Range 3           Temperature

Mfg Zero (G)          1.653                 0.00                 0.00                   0.00                  -2.20

Mfg Cal               1.009150          1.000000          1.000000          1.000000           1.000000

 

Modifying a Mfg Cal Info of Temperature

 

 

  1. To change the calibration info of Mfg Cal reading of “Temperature” from 1.000000 to 1.022155, do the following:

 

 

From the keyboard, type in “STC1.022155” and press ENTER.

 

Press “D” to show the calibration info and it must show a new value of 1.022155 on Temperature column.

 

                              Range 0           Range 1           Range 2           Range 3           Temperature

Mfg Zero (G)          1.653                0.00                   0.00                  0.00                  -2.20

Mfg Cal               1.009150          1.000000         1.000000          1.000000            1.022155

 

 

11. To exit calibrate mode, type “Q”.

  • Facebook Social Icon
  • Twitter Social Icon
  • YouTube Social  Icon

NEW RELEASES

Want to find out the latest in Group3 products, subscribe now.

© 2018 by Joey Aguas for Group3 Technology Limited, Auckland, New Zealand