This is a modified version of Z38XX brought to you by the late Ulrich Bangert. (it's very clear that many time-nuts hold Ulrich in high regard and I wanted to make sure and mention his work here)  His website is no longer available so I thought I would host the modified version on my web server: http://www.nc7j.com/downloads/NG7M/Time-Nuts/Z38XX-Modified-for-Lucent-Z3811A-Z3812A/

The zip file in this directory contains simple mod to the original version to allow it to talk to the Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO. The original exe is also included in the zip file.

The mod is simple, via a hex editor (as reported by Götz Romahn) is to change the strings used for comparison at start up when Z38XX asks for the version. i.e. just modify the strings in the exe binary without disrupting the string table space.

In a hex editor you search for Z3805 and replace it with Z3811 for the RFTG-u REF 1 box.  Since I'm lazy and I really couldn't tell a difference if you use the Z3805 or the Z3815 command set in Z38XX, I also did a search and replace on Z3815 and changed it to Z3812.  This allows you to use the same Z38XX version for either the Z3812A RFTG-u REF 0 box or the Z3811A RFTG-u REF 1 box.  When connected to either J8-DIAGNOSTIC port.

On another note, I couldn't get a PCI-Express 4 port serial card to work with the simple RS-422 to RS-232 cable hack.  However, I had success with a good FTDI based USB serial adapter.  In this case, it's a real FTDI chipset.  Your mileage may vary as I have seen others scratch their head over problems getting the 422 / 232 cable hack to work.

Anyway, I hope someone can find the 'pre hacked' version of Z38XX useful.

Enjoy!

de Max NG7M