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Checkout my recently acquired Hayes Stack Chronograph. Why? "He& #39;s gotta have it!"
I didn& #39;t have a power supply for the chronograph, so waited a week for a Hayes SmartModem 1200 I bought to be delivered to rob it of it& #39;s power cube. I actually bought a second modem for a spare wall wart.
It works except that result codes and data reads are returned. I can set the date and time and change the display. I& #39;ve replaced the three AA batteries.
Might put it on the bench today after breakfast.
Might put it on the bench today after breakfast.
I put up a wiki page for my Hayes Stack Chronograph https://wiki.theretrowagon.com/wiki/Hayes_Stack_Chronograph">https://wiki.theretrowagon.com/wiki/Haye...
This is my previous Telephonic modulator demodulator Chronographicaly enhanced stack. // @paulrickards @BillLange1968
I& #39;ve got the Chronograph on bench now. I know it& #39;s responding to received data, so I& #39;ll be looking at xmit data to repair. To be sure I have my instrumentation working to my understanding I setup my Rigol on pin 1 of U9 MC1489 to decode RS232. It works! ;-) Next it& #39;s U10 MC1488
O.K. I& #39;ve got signal coming from the PIC into U10 1488 but no -10vdc on VCC- Checking that part of the power supply now.
ACK! Not like acknowledge, like DOH but I already used DOH in this thread.
I blew the fuse :-(
Break time.
I blew the fuse :-(
Break time.
