Thanks gentlemen. Here's a photo of my setup. https://photos.app.goo.gl/D9SfzK5AZTUBwyBb6
102 to 9/25 adapter, to gender changer, to null modem, to Prolific usb/serial cable(adapter). The usb/serial cable(adapter) is usb at one end, and 9pin serial at the other. All works well until the usb/serial cable(adapter) is added to the mix. Soon as it's plugged in, 102 screen dims to nearly nothing. Have to crank up the contrast to max just to see the screen. Unplug the usb/serial cable(adapter), screen immediately returns to normal. This happens with or without the null modem. If I plug in any of the pieces *without* the usb/serial device, all is well. Thanks. Tom M. On Sun, Apr 14, 2019 at 9:54 AM Eric Miller <[email protected]> wrote: > I experienced display dimming when I connected a serial to usb cable > without adding a null modem adapter. My cable was also a Prolific cable. I > would suggest getting a null modem adapter or cable. > > On Sat, Apr 13, 2019 at 6:37 AM Thomas Morehouse <[email protected]> > wrote: > >> Thanks Peter. That is interesting. I've tried the usb/serial >> cable/adapter on my M100 and M102. On both, the screen immediately dims >> and disappears completely at normal contrast setting; that's at the cold >> boot menu alone. Same when I'm in Telcom. I have to turn the contrast >> up to maximum just to be able to read the screen. And this happens whether >> it's connected to anything or not. >> >> I don't have a "plain" serial cable to try., to see if it's the cable or >> the Prolific usb part causing the problem. I do have another usb/serial >> cable/adapter (Wyse), which doesn't cause a dimming problem - but that one >> isn't recognized by my Dell laptop or desktop. Wyse is now Dell, there are >> no Wyse drivers to be found, and Win10 says "no driver available" after >> doing its "internet search". >> >> Tom M. >> >> >> On Fri, Apr 12, 2019 at 11:26 PM Peter Noeth <[email protected]> >> wrote: >> >>> No, my USB/Serial cable *does not* change the display contrast of my >>> T102 or M100 when connected to either my HP Mini 100e laptop or my Dell >>> WinXP desktop computer. >>> >>> Neither does my standard serial cable when connected to my Dell WinXP >>> desktop computer and either the T102 or M100. >>> >>> Regards, >>> >>> Peter >>> >> >> > -- > Eric Miller > http://pragmaticpizza.blogspot.com/ > https://github.com/eric-john-miller >
