I have an Arduino in a circuit producing 1 KHz sine wave and a way to
control when the signal is high or low to meet the IRIG-B levels. Has
anyone produced code for Arduino to take the time read from a GPS receiver
setup to produce IRIG-B127. I need to basically amplitude modulate the 1
KHz to
Well lately I have been disappointed with the quality of writing of the
manuals. Not just HP, but I do expect better from them. Typos, poor grammar,
occasionally poor content. Very little said about errors that appear on
screen, for instance.
Sometimes I wonder if the circuits and software
Before I worked for HP, I used to read HP manuals like they were
textbooks. I was like Hugh in that I thought everything HP
did must be great. So I decided to reverse engineer a 200 to
300 MHz VCO used in a 0 to 100 MHz spectrum analyzer plug in.
The manual only gave an - number for the
Great story and like all things as you get to know them realities sink in.
The great thing is getting past what you thought and appreciating that
things work and have long lives.
Have to say I always enjoyed reading the HP and Tek manuals because as an
outsider you did learn. Granted I normally
The schematics are so good - easy to read, lots of context. Even some
off-board parts shown so you can see where the signal ends up. Notes about
the function and adjustment. You can learn a lot from them. Manuals were
worth having.
So many of today's schematics are little more than a netlist : a
Hugh,
I notice your design, like all other HP designs I have seen from
that era, operates with a very high margin for low mains voltage.
Do you happen to remember what HP's design criteria were for this ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP
