On 26 Oct 2006 10:54:23 -0700, "Telstar Electronics"
wrote:

Mike W wrote:
Hi Folks, I have a need for the circuit diagram of the crystal
timebase oscillator for the DSI 5600A frequency counter. I have
diagrams of the main board and the display board but, as Murphys law
states, the fault is in the bit I don't have the diagrams for. Any
help appreciated.
Thanks, Mike G8NXD

Can we assume you've contacted the manufacturer?

www.telstar-electronics.com

Not Yet. I did'nt know who was the owner of the design these days,
Thankyou