Rockland 5100 u3

[@williamballad1291]

We used a pair of Rocklands at the Auditory Research Lab at Northwestern University. They were under computer control from a PDP-12. I recall that they had a problem with dropped bits which showed up as steps on the sine wave. These were early production models and used wire wrapped connections on the main board. Rockland replaced the boards with printed circuit boards and the problem went away.

[@bap8guy]

This unit has a very large circuit board, but still uses wire wrap to interconnect various (perhaps a dozen) points on the board. Thanks for your comment.

[@ErrorDoesGaming]

nice vids i do reccomend using ur phone camera its still better

[@radio655]

Nice generator! Could you also measure its distortion? What does it use as a clock source?

[@bap8guy]

It is an 8Mhz ovenized Crystal Oscillator for the clock (expensive option 01). The distortion is identified as -50db spurious components 0-2Mhz, and -45db 0-2Mhz harmonic components.

[@bap8guy]

I think that is saying .00001 spurious and .00005 harmonic.

[@bap8guy]

@@jim9930 I looked up the conversion of percent harmonic distortion vs db harmonic distortion and found it. It appears -55db Harmonic distortion converts to .178 (rounded up) % distortion.