vt100 test box ?

http://www.ebay.com/itm/DIGITAL-DEC-VT100-no-monitor-or-keyboard-VT-100-TES… That VT100 terminal box goes with a VS11/VSV11 raster graphics system for a PDP-11. In the VSV11 Interconnection Diagram on page 9 of this manual it is shown as a VT100-LA or LB (I think the only difference there is 115/220): http://www.bitsavers.org/pdf/dec/graphics/MP01102_VS11_Engineering_Drawings… In the VS11-FX/HX/JX Raster Graphics System Installation Manual EK-VSFHJ-IN-001 there are illustrations of this box being used in combination with a VRV02-AA/AB color monitor where the box is refered to as the "keyboard interface box" and the combination of the monitor and the "keyboard interface box" makes up the VRV02-FA/FB. The "keyboard interface box" video output feeds into the VS11 where the terminal video output is then fed back out along with the VS11 raster graphics output to the monitor. I can't find an online copy of the EK-VSFHJ-IN-001 manual anywhere. I have an original hard copy of the manual.