VT220 with VT240?

Ahh. So they don't know what they're selling. That's to be expected, considering they're vax experts and all *rolls eyes* -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Ethan Dicks Sent: Wednesday, August 03, 2005 4:06 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: VT220 with VT240? On 8/3/05, Julian Wolfe <fireflyst at earthlink.net> wrote: Huh? I visited their page and am completely perplexed. They are on crack? I have more than one VT240 and VT220... they both use LK201 keyboards, but the interchangability ends there. The VT220 has an RS170 BNC for external video, and both 20mA and EIA ports to the outside (one at a time, not dual-session, naturally). I have successfully used the 20mA port on my PDP-8/L (via the standard W076 current-loop interface), but I did have some VT52 emulation problems on an -8/a running OS/8 and Teco with the VTEDIT.TEC macro. The VT240, as they say, can be used with either a VR201 for mono (VT240), or with a VR241 for color (VT241). One can also use a Barco or other monitor for color. The right cable has a DA15 on one end for the VT240 base, and 3 BNCs for RGB sync-on-green. I have no idea why they would say that you could combine a VT220 and a VT240/VT241. For the record, the two most common problems I've seen with the VT220 and VT240 are the power switch failing mechanically (Radio Shack used to sell a black plastic switch that fits perfectly, but looks kinda ugly), and the EIA receivers blowing out. These terminals use 9636 and 9637 pairs (8-pin DIPs), not 1488s and 1489s for level shifting. Unless you do a lot of DEC terminal repair, you probably don't have those in your tool box. Those two occasional problems aside, I do like the terminals. -ethan