Scope Choice for Vintage Computer Troubleshooting

All LCD scopes are junk compared to a good tube scope. I understand that you're spec'ing a LCD scope, but seriously consider a Tektronix 2445. This is a four channel 150mhz scope, and they can be had for $400-$500. A 2465 is an even better choice, with the 2465B being the top of the line. However, 300mhz is far more than you'll ever use day to day, and the B, while having some nice features, drives the price up into the $1000-$1200 range. You can also find good deals on the P6131 probes for the 2400 series scopes. These are far more flexible than the after market Scopemaster probes. I've found new ones on eBay (unopened) for $35 on occasion. LCDs scopes are a compromise. The bandwidth is poor (though adequate for most 4Mhz systems), and do very poorly on dynamic signals. They're OK to capture a single image, but if you want to watch for jitter in a clock and such, they're useless. Again, I acknowledge you've said you wanted a LCD scope, but if this is to be a primary instrument, I would recommend a good tube scope instead. --John -----Original Message----- From: cctalk-admin(a)classiccmp.org [mailto:cctalk-admin@classiccmp.org]On Behalf Of Mike Sent: Monday, October 07, 2002 11:46 To: cctalk(a)classiccmp.org Subject: Scope Choice for Vintage Computer Troubleshooting Ok, I need some advice on what type of scope might be available for troubleshooting vintage computers. I have already decided that I need more than is necessary. I want to limit my choice to a economically priced portable LCD scope. However, I'm not familar with what is available. Any good choices?