Thank you very much!

At least I know the basic specs, and it is a very fine piece of equipment, as I suspected. I couldn't find drifting figures, though.
What year is that catalog?
The equipment is coming from Japan, I still don't have it here with me. From the photos of the actual unit, it is loaded with 1x TR 61604, 1x TR61603 and 2x TR61601 or TR61602.
All I am in need now are the GPIB command instructions, I believe, and calibration instructions.