27 Aug
2015
27 Aug
'15
3:38 a.m.
If I recall correctly; weren't the "preferred" versions of the 33ASR
for use where the reader was controlled by the computer the 3-position
manual reader control models? Since the reader won't run unless the
computer is asserting the reader control lines anyway, and with such
hardware flow control XON/XOFF automatic control become redundant.
Over here most ASR33s were used as locally-connected (current loop) computer
terminals. Every one I've seen has been manual control (3 position reader control)
and had a reader control relay fitted. So it certainly can be done.
I agree that if you have the reader relay there is no need for the XON/XOFF control
too. I don't think it matters if you have it, but no worries if you don't.
In any case the reader control is electrical, in fact the reader is the only part of the
ASR33 not to have a mechanical connection to any other unit. Reader control means
energising (or not) the trip magnet at the rear right of the typing unit. So if you have
the XON/XOFF control and find it gets in the way, it should be trivial to bypass it.
-tony
Regards,
Christian
--
Christian M. Gauger-Cosgrove
STCKON08DS0
Contact information available upon request.