Tektrionix VAXBI board and DC100 training tapes?

[Al Kossow]

On 9/19/19 12:45 PM, Mattis Lind via cctalk wrote:
> An ex DEC engineer offloaded some stuff that he had found in his attic.
> 
> https://i.imgur.com/413NSSL.jpg?1
> 
> It came together with a tektronix 1241 Logic Analyzer.
> 
> Someone that can tell more about it?
> 

A Tek BI-Bus preprocessor for the 1241?

> Then there were some DC100 tapes in a huge heap of TU58 diagnostic tapes

> They were marked "BI-SYNC TRAINING TAPE" and "ASYNC TRAINING TAPE
> TAP-895-103-1.0 3.04"
> 
> 
> Anyone recognize what that could be?
> 

Tek logic analyzers and protocol analyzers of the era used those tapes
It may be sample data for those protocols