[time-nuts] The HP 58503A

[R.Phillips]

Gentlemen
I have recently acquired an HP 58503A which is working perfectly, it is a late model with front panel display, and the later 8 channel receiver. I have not yet ‘opened it up’ to check the interior. This model has the telecoms specification with the 1 pps output BNC re-labelled as ESEC, I would rather have the 1 pps output – what is required to achieve this facility. 
Thank you.