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_posts/2022-05-11-TTI1906-Repair.md

@@ -186,3 +186,18 @@ Before venture yourself to buy stuff to repair from eBay, performed some researc
 
     * [THE RS-232 STANDARD](https://mil.ufl.edu/4744/docs/RS232_standard_files/RS232_standard.html)
     * [FUNDAMENTALS OF RS-232 SERIAL COMMUNICATIONS](https://www.maximintegrated.com/en/design/technical-documents/tutorials/8/83.html)
+
+[^0323]: My multimeter is the first TTI1906 version with blue enclosure. The new version that's also obsolete, has a white enclosure.
+
+    ![]({{ site.url }}{% link images/tti1906/1906_white.png %} "TTI1906 with white enclosure"){: height="300"}
+    _TTI1906 with white enclosure_
+
+[^f9a6]: The eevblog forum has a very good message thread ([HERE](https://www.eevblog.com/forum/buysellwanted/(wanted)-tti-arc-windows-software/)) about this software and additional TTI1906 multimeter information.
+
+[^2360]: The GPIB interface, sometimes called the General Purpose Interface Bus (GPIB), is a general purpose digital interface system that can be used to transfer data between two or more devices. It is particularly well suited for interconnecting computers and test instruments.
+
+    ![]({{ site.url }}{% link images/tti1906/gpib_ex.png %} "Example of GPIB command format"){: height="200"}
+    _Example of GPIB command format_
+
+[^906a]: The instrument can be calibrated via serial communication as described on the [service manual]({{ site.url }}{% link files/tti1906sm.pdf %}). Some very basic information about the multimeter calibration process can be found [HERE]({{ site.url }}{% link files/tti1906_dc_cal.doc %}).
+    For precision work I recommend send the instrument to a calibration house to be properly precision calibrated.