Sorry if some of the suggestions aren’t appropriate, was just throwing a few things out.
$analyze/error/since=today/full/include=tx Can you post a sample of the output for one of the lines that has an error? Regards, Jerry > On Aug 17, 2015, at 4:11 PM, Holm Tiffe <h...@freibergnet.de> wrote: > > Jerry Weiss wrote: > >> A few quick thoughts: >> >> 1) Bad non-name USB/Serial converter. I have one that won?t speak to a MVII >> console or certain non-DEC DLV11J cards > > ...sorry, USB in a DEC VT420 _and_ an Bull Compuprint 970? > (http://www.computer-makarow.de/images/product_images/popup_images/431_0.jpg > Image stolen from the web..) > > I've only checked the VT420 with the USB Adapter connected to the Notebook > and it was working as expected. I haven't connected the USB Adapter to the > VAX. > >> 2) LED Analyzer is pulling too much current on the lines > > :-| > > ... and it only does this on the MUX. Still not clear why it doesn't work > w/o the LED Gadget. > >> 3) Bad +-15 volt converter on board. Do you see any activity on control >> signals or send line? Try a voltmeter instead of the LEDs. > > It think I can even use one of the Scopes.. but the LED's are bright, all > of them and the modem control signals are toggeling with the terminal line > settings.. > Regardless of this, even with a broken DC/DC converter and NO Device > connected to the lines, It should be possible to write to the port if it is > set to software flow control..but it doesn't. The write times out. > >> 4) $Set term txa3:/nottsync/perm/noninteractive >> in case the port has picked up a control-s? and try to copy the file >> again. > > ..and again and again. I don't post here after a single failurre, I've > wrote that I tried for hours, tried several ports and I've rebooted > the VAX many times. > > Sorry, none of those. It is really not that simple. > > I think about a possibly defective clock XTAL Oscillator on the MUX Board. > The Board logic and the "Registers" may be clocked from the QBus, but the > I think the UARTs gettings her clock from the Oscillator since it has a > Baud rate frequency (14,7456 MHz). Otherwise I've got single LF's and CR's > on the VT420 from time to time, but no other characters.. I'll check that. > > Please give me a hint how exactly I should setup a line, no problem for me > on unix with stty ..but I don't know much about VMS... > > > Regards, > > Holm > -- > Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, > Freiberger Straße 42, 09600 Oberschöna, USt-Id: DE253710583 > www.tsht.de, i...@tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741 >