Tek 7904 scope

At 12:31 PM 2/18/2007 -0500, you wrote: Well, I have said device in my hands now and have been playing with it, trying to see if all the bits work. I haven't played with the curve tracer yet, but I have the manuals for all the plug-ins downloaded, also three or four slightly different manuals for the scope itself. I'm having a lot of fun working with it. It plays pretty nice. I've been running through the checkout process in the manual are so far there's only two concerns: 1. The display swims, more like twitches, from left to right, rapidly and constantly, somewhat less than one minor division, meaning about half a millimeter at a rough guess. It does it on any/all channels on both the 7A26 vertical amp and the 7A18 amp. I don't have another timebase to check out, but when I switch to the curve tracer instead of my 7B53A, the twitch in the on-screen readouts for controls settings stops. Of course, with the curve tracer, you can't sync up, but the readouts clue you that it is/is not dancing around. I tried swapping the timebase into the A slot, instead of the B slot (the 7CT1N wants to be in an inside slot) but the twitch is still there. 2. The Ch1 input on my second vertical amp seems to attenuate the signal by a tenth. The 4v calibrator at 1khz or DC reads 0.4v, set at 1v/div. The other input on the same plug-in reads 4v. Set to 0.5 v/div, the bad input reads about 1.2v. Switching the calibrator to 0.4v and the bad input to .2v/div gives similar results. I'm working my way through the manuals, learning as I go. [Toasts] Here's a toast to your new bride who has everything a girl could want in her life, except for good taste in men! --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB ADDRESS http//www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531