I can't, however, find a datasheet for this one - probably because it became obsolete long ago. The 220/330 must be referring to R pairs - right? The black dot is pin 1 - right?

Here is what I read on an MM

1 to 2 or 3 4 or 5 or 6 or 7 - 165.6 Ohms

1 to 8 - 93.4 Ohms

2 or 3 or 4 or 5 or 6 or 7 to 8 - 147.8 Ohms.

All other pin pairs are open.

What is the configuration?