Conference 49.910::kav30

27.0. "break or not break" by SORGEN::HERMANN () Tue Oct 01 1991 10:33

there are (at least) 3 different ways to connect the console line to a
terminal : 

1. video-terminal directly
2. terminal-server : set host/lat service-name
3. workstation (comm-port or printer port) : set host/dte device:

if connected to a workstation, you need to setup the characteristics as follows:
(thanks to alfons grammer)

$! setup_tta.com	22-MAY-1991 ag
$ set protection= wo:rw /device tta2:
$ set Terminal  TTA2: /permanent  -
	/speed= 19200 /Tab /Eightbit /noBroadcast /Form /noAutobaud /noline -
	/Numeric_Keypad /ANSI_CRT /NoEdit_mode  
$ set protection= wo:rw /device tta3:
$ set Terminal  TTA3: /permanent  -
	/speed= 9600 /Tab /Eightbit /noBroadcast /Form /noAutobaud /noline -
	/Numeric_Keypad /ANSI_CRT /NoEdit_mode  
$ type sys$input
to connect to console type

	$ set host /dte tta2:

note,	^\	is	^4	on german keyboard

$ exit

both commands (set host/lat and set host/dte) allow to specify a /break=
break-character qualifier. 
according to tests and measurements (thanks to thomas lemmer) a video-terminal
like the vt3xx sends a 280ms break while the vaxstation sends a 43 ms break- 
signal.the rtvax-300 on a kav30 expects a 160 ms break.
this means you can "break" a rtvax-300 (if enabled on board) with a video-
terminal and a terminal server but not with a vaxstation using set host/dte.

i have no idea, whether the length of break is a "standard" or not or whether
the 43 ms of the vaxstation are generated hardware- or softwarewise.
perhaps someone else has some input?

hermann mueller,rtec munich