Re: Tektronix 7854 Digitization Issue

Albert Otten

Hi Raymond,

You are right! I misinterpreted the function of the GSF (a little bit stupid since the vertical signal I referred to is not at all involved here). Apparently the blanking signal is included already by the Z-axis controller and not a separate signal to the Z-axis amplifier.
Well, this will be a relief for the OP.


On Tue, Sep 17, 2019 at 03:21 PM, Raymond Domp Frank wrote:


On Tue, Sep 17, 2019 at 01:53 PM, Raymond Domp Frank wrote:

Of course, I don't remember exactly which one...
It's the GSF (Good Signal Flip-flop) trimmer (U102) on the Z-axis board (dwg
13). See description of Digitiser Control Logic > Bus Control > Internal
Acquire Mode, page 2-61 in my manual (070-2874-01), Jan '82. Also, see Table
2-8 on page 2-122 and are F,G-2 in dwg 21.


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