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Checkout my recently acquired Hayes Stack Chronograph. Why? "He's gotta have it!"
I didn'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'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'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
This is my previous Telephonic modulator demodulator Chronographicaly enhanced stack. // @paulrickards @BillLange1968
I've got the Chronograph on bench now. I know it's responding to received data, so I'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's U10 MC1488
O.K. I'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.
