Post by thread:Is a Tektronix 465 OScope good? [kind of urgent]

A Tek 465 is an excellent scope. It is rather long in the tooth, but does a great job. In fact, I have one sitting behind me on the shelf, retired within the past year and replaced with a new(er) scope I purchased on eBay. Bob Ammerman RAm Systems {Original Message removed}

> It is rather long in the tooth Hrm? -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu>

> > It is rather long in the tooth > > Hrm? As in an older horse. An American expression I would assume, and perhaps one many younger Americans would not get. Bob Ammerman RAm Systems > -- > http://www.piclist.com hint: To leave the PICList > .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu > -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestKILLspammitvma.mit.edu>

> and perhaps one many younger Americans would not get. Yeah, that's me. It's actually a 465M (military version, yay), which is supposed to be a little better and (according to Tektronix) became obsolete later. The funny thing is that I remembered I needed an Oscope yesterday while playing a wargame. Sitting on a table in this game is a perfect 3D rendering of a Tek 465M :) -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu>

The 465 is an excellent scope within its specs. I believe vertical response is around 60mhz. As I recall, it does not have an analog input available on the x-axis. I do not know of a need for this in digital use. All of this general type Tek have a x10 magnifier built in. If you sync internal, you can see the leading edge of the trigger which means you can display (with the other channel) the precise time of the triggering event. Most scope users never get familiar with the displayed sweep function. There are things you cannot see any other way. John Ferrell 6241 Phillippi Rd Julian NC 27283 Phone: (336)685-9606 Dixie Competition Products NSRCA 479 AMA 4190 W8CCW "My Competition is Not My Enemy" {Original Message removed}

Anybody have some probes for this thing I could buy? -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu>

> The 465 is an excellent scope within its specs. I believe vertical response > is around 60mhz. Actually 100 MHz > As I recall, it does not have an analog input available on > the x-axis. I do not know of a need for this in digital use. No, it does have XY mode, and also a Z input for intensity modulation. > All of this general type Tek have a x10 magnifier built in. If you sync > internal, you can see the leading edge of the trigger which means you can > display (with the other channel) the precise time of the triggering event. > Most scope users never get familiar with the displayed sweep function. There > are things you cannot see any other way. Yep. Bob Ammerman RAm Systems -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestspam_OUTmitvma.mit.edu>

Okay, I think I found a probe for it. Does it look OK? It better, because I stupidly already bid. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3308547016&category=25415 (Oh, great, now some PicLister will outbid me, thanks to my inquisitive nature) -- http://www.piclist.com hint: To leave the PICList @spam@piclist-unsubscribe-requestKILLspammitvma.mit.edu>

> Okay, I think I found a probe for it. Does it look OK? It better, because I > stupidly already bid. > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3308547016&category=25415 Oops. Crud. I was told by someone with a 465B that it was definitely OK. Come to find out it's not. Hopefully, the seller will cancel my bid like I asked... -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

That probe is probably not a 100MHz probe, but it'll do fine for most PIC stuff. You can pick up low-end 100MHz probes on the net for about $30. Bob Ammerman RAm Systems {Original Message removed}

Do I need a seperate ground lead, and where are those scope tutorials? -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Do I need a seperate ground lead, and where are those scope tutorials? > Probes include ground leads. That't the little alligator clip bit. Bob Ammerman RAm Systems -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> That probe is probably not a 100MHz probe, but it'll do fine for most PIC > stuff. Didn't think so. As I said, this guy with a 465B told me it was indeed good. Then I realized it was BNC, which doesn't seem to be the right connector. What the heck, I'll buy 2 probes. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Is this probe OK? I don't know what kind of connector the 465M has. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3109813829&category=1504 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Is this probe OK? I don't know what kind of connector the 465M has. > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3109813829&category=1504 The Tektronix 465 series uses a BNC connector (female jack). Any probe using a mating BNC connector (male plug) will electrically couple to the scope circuitry and work fine. On my Philips oscilloscope, I set the vertical deflection amp knob to to 0.1V/div. With 0.3 volts at the scope panel's jack, I get 3 divisions on the screen. With an X1 probe, 0.3 volts at the probe tip gives me (about) 0.3 volts at the jack. But the low input impedence (1M ohm) and cable capacitance limits the displayed frequency response. With an X10 probe installed, 0.3 volts at the probe tip gives me 0.03 volts at the front panel jack. So I have to mentally adjust when setting the vertical deflection amp's gain setting. If I want to see 0.1 V/div on the screen, I have to set the knob to 0.01 V/div setting. The X10 probe's higher input impedence (10M ohm) and better capaciance figure improve the displayed frequency response. The X1 probe give you better sensitivity. The X10 probe gives you beter frequency response. As I recall, 465-specific probes have an additional pin on the outer rim of the probe's BNC plug. This pin makes contact with a ring on the scope's BNC jack. This "tells" the scope whether the probe is operating in X1 or X10 mode. When a X1 probe is installed, a lamp illuminates under the vertical deflection amp's actual V/div setting. When a X10 probe installed, a different lamp is illumiated so that the effective V/div setting is shown on the vertical deflection amp's knob. So the scope automatically adjusts for X1 vs X10 and you just read the vertical deflection off the front panel. With a non-Tek specific probe installed on a Tek 465, you just have to do the vertical deflection arithmetic in your head. Most probes have a compensation adjustment to match the probe to the oscilloscope's input. It's usually a small screw in a rectangular block near the probe's BNC plug. To set it... Attach the probe's BNC plug to the scope's input. Hook the probe tip to a 1KHz to 10KHz known-good square wave. (Some scopes have a square wave output on them just for this purpose.) Adjust the probe's compensation screw until the corners of the displayed waveform are as "square" as possible. (I suggest you play with the adjustment to see the distortion introduced by an impedence mismatch.) After adjusting the probe on 1 channel, check the probe on all other input channels so you know how much distortion that probe introduces on each of your scope's input channels. Lee Jones -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

99% of all scope probes are BNC. Bob Ammerman RAm Systems ----- Original Message ----- From: "Gies Family" <KILLspamgiesfamilyKILLspamCOX-INTERNET.COM> To: <RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU> Sent: Monday, January 27, 2003 4:10 PM Subject: Re: Is a Tektronix 465 OScope good? [kind of urgent] > > That probe is probably not a 100MHz probe, but it'll do fine for most PIC > > stuff. > > Didn't think so. As I said, this guy with a 465B told me it was indeed good. > Then I realized it was BNC, which doesn't seem to be the right connector. > What the heck, I'll buy 2 probes. > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads