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OT: Sony/Tektronix 318 Logic analyzer
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J. Forster
I'll look later,but I think it's 20 or 50 nS.
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-John ================= Hi! |
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That is an easy question to answer: If it is a 318, it
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will acquire at 20ns: async or sync... I don't recall if the glitch position changes the maximum acquisition rate, but you might want to check... The only difference between the 338 and the 318 is the acquisition memory board, and that is what determines the maximum acquisition speed. It could be that your 318 is thinking it is a 338, I would think if that is so it should show 32 channels too. Perhaps your 318's CPU is misreading the acquisition board's ID? -Chuck Harris Gala Dragos wrote: Hi! |
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I'm cross posting from the Tek scopes group...
I have both 318 and 338 baby logic analyzers. Cute little things. They both run identical hardware with exception of the acquisition board pair. Configuration is determined on boot up. As mentioned earlier, you will see either two banks of ports on the [SETUP] menu if it's 318, or four if it's a 338. On power-up, both units default to "50 nS" clk rate (internal) setting. To change: On the [TRIGGER] menu, EDIT [->] three times, then DATA [DECR] (B) to increase sample rate. The 318 sequence should be: "50 nS" -> "20 nS" -> "EXT \>" -> "EXT />" -> "500mS" (warps around) ... Much of the 318/338 hardware registers are write-only, and the clock rate cannot be accurately identified by the CPU itself. The clock ASIC diagnostic screen can only set the clock rate, and you have to use a scope to verify the generated clock. If you cannot set the 20 nS clock rate, I would suspect that the CPU is mis-identifiying the hardware. Try reseating the dual ACQ boards, and the CPU/Display board. Note that the 318/338's were designed in the early days, when static sensitivity was considerably worse. We take for granted these days the robustness of modern logic chips that seem to be impervious to static charge. Work on your 318 in a static controlled environment! Good luck in your diagnosis. All for now. Sbirdasn. |
it only shows 2 pods, A and B?it should show 32 channels too. in the trigger menu I can select up to 4 groups with 16 channels each. This means I have 32 channels ? --- On Sun, 3/10/13, Chuck Harris <cfharris@...> wrote: From: Chuck Harris <cfharris@...> Subject: Re: [hp_agilent_equipment] OT: Sony/Tektronix 318 Logic analyzer To: hp_agilent_equipment@... Date: Sunday, March 10, 2013, 5:09 PM ? That is an easy question to answer: If it is a 318, it will acquire at 20ns: async or sync... I don't recall if the glitch position changes the maximum acquisition rate, but you might want to check... The only difference between the 338 and the 318 is the acquisition memory board, and that is what determines the maximum acquisition speed. It could be that your 318 is thinking it is a 338, I would think if that is so it should show 32 channels too. Perhaps your 318's CPU is misreading the acquisition board's ID? -Chuck Harris Gala Dragos wrote: Hi! Anybody has a Sony/Tektronix 318 logic analyzer? Can you tell me the fastest CLK that you can select for acquisition? Thanks. [Non-text portions of this message have been removed] |
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Hi All,
I've got a DOS data capture program for the Tektronix 338 Logic Analyzer which I wrote about fifteen years ago. I wrote it to work on the COM2 port of my old 386. The program is primitive, but it worked for what I was doing. If anyone has a Tek. 338 and a PC which will display full screen DOS graphics (or a copy of DOSBOX or similar installed), you're welcome to a copy to play around with. I was limited by the screen resolution (640x480); to display Pod D data, you have to scroll down with the arrow key. It's a compiled EXE file. I wrote it in QuickBasic 4.5. I could also send along the source file but it might take a while to dig it out of the achieves. Larry P.S. I never tried it with a 318. |
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That was my next milestone, but got stuck into this 20ns?disappearance.
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It would be useful if you have the time to dig. --- On Sun, 3/10/13, Larry Fuller <lfuller500@...> wrote:
From: Larry Fuller <lfuller500@...> Subject: [hp_agilent_equipment] Re: OT: Sony/Tektronix 318 Logic analyzer To: hp_agilent_equipment@... Date: Sunday, March 10, 2013, 9:40 PM ? Hi All, I've got a DOS data capture program for the Tektronix 338 Logic Analyzer which I wrote about fifteen years ago. I wrote it to work on the COM2 port of my old 386. The program is primitive, but it worked for what I was doing. If anyone has a Tek. 338 and a PC which will display full screen DOS graphics (or a copy of DOSBOX or similar installed), you're welcome to a copy to play around with. I was limited by the screen resolution (640x480); to display Pod D data, you have to scroll down with the arrow key. It's a compiled EXE file. I wrote it in QuickBasic 4.5. I could also send along the source file but it might take a while to dig it out of the achieves. Larry P.S. I never tried it with a 318. [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] |
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Can anybody explain how exactly the instrument type detection takes place, or give a reference to the free army manual that floats on the web.
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--- On Sun, 3/10/13, Gala Dragos <gala_dragos@...> wrote:
From: Gala Dragos <gala_dragos@...> Subject: Re: [hp_agilent_equipment] Re: OT: Sony/Tektronix 318 Logic analyzer To: hp_agilent_equipment@... Date: Sunday, March 10, 2013, 10:30 PM ? That was my next milestone, but got stuck into this 20ns?disappearance. It would be useful if you have the time to dig. --- On Sun, 3/10/13, Larry Fuller <lfuller500@...> wrote: From: Larry Fuller <lfuller500@...> Subject: [hp_agilent_equipment] Re: OT: Sony/Tektronix 318 Logic analyzer To: hp_agilent_equipment@... Date: Sunday, March 10, 2013, 9:40 PM ? Hi All, I've got a DOS data capture program for the Tektronix 338 Logic Analyzer which I wrote about fifteen years ago. I wrote it to work on the COM2 port of my old 386. The program is primitive, but it worked for what I was doing. If anyone has a Tek. 338 and a PC which will display full screen DOS graphics (or a copy of DOSBOX or similar installed), you're welcome to a copy to play around with. I was limited by the screen resolution (640x480); to display Pod D data, you have to scroll down with the arrow key. It's a compiled EXE file. I wrote it in QuickBasic 4.5. I could also send along the source file but it might take a while to dig it out of the achieves. Larry P.S. I never tried it with a 318. [Non-text portions of this message have been removed] |
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