From: Lyke James Civ AFRL/VSSE ([email protected])
Date: Fri Nov 10 2000 - 05:13:37 PST
I am involved with a painful situation in which we have to mix high-speed
digital with sensitive instrumentation in an infrared sensor and mirror
control servos. In instrumentation, there is a very strong emphasis on
single point grounds, but for the nearly 100 processors and 16,
1-gigabit/second links inside the same system, a different set of
philosophies emerge, in which in order to make the transmission line
structures function correctly, etc. we must deal with keeping the ground
impedances low through a multiplicity of ground contacts. This violates the
first idea about a single point ground.
How can these philosophies be reconciled within a single system?
jim
JIM LYKE, AFRL/VSSE
[email protected], 505-846-5812/5815
WARNING-WARNING-WARNING
For best results, DO NOT reply to this e-mail. Instead, use
[email protected]. The [email protected] is totally
unreliable, and it may not work right for another 100 years.
**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected]. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****
This archive was generated by hypermail 2b29 : Tue May 08 2001 - 14:30:06 PDT