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Note plan to test ST2VGA Enhanced on Low machine for Dell jailbars

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<p>The <a href="/retro/atari-mega-st-fleet/">Mega ST 4 "High"</a> uses a self-built adapter. I had to build my own because every off-the-shelf adapter blocks the VGA slot of the <a href="/retro/et4000-experiment/">ET4000</a> card, since both connectors sit at the same spot on the machine. My solution is a short cable leading to a small box, which carries the VGA connector and the mono/color switch, so the ET4000's own VGA output stays accessible. I followed the guide at <a href="https://pest.atari.org/www.logicsays.com/atari/mono/docs/atari_vga.htm" target="_blank">pest.atari.org</a> to build the RGB-to-VGA adapter itself.</p> <p>The <a href="/retro/atari-mega-st-fleet/">Mega ST 4 "High"</a> uses a self-built adapter. I had to build my own because every off-the-shelf adapter blocks the VGA slot of the <a href="/retro/et4000-experiment/">ET4000</a> card, since both connectors sit at the same spot on the machine. My solution is a short cable leading to a small box, which carries the VGA connector and the mono/color switch, so the ET4000's own VGA output stays accessible. I followed the guide at <a href="https://pest.atari.org/www.logicsays.com/atari/mono/docs/atari_vga.htm" target="_blank">pest.atari.org</a> to build the RGB-to-VGA adapter itself.</p>
<h2>The ST2VGA Enhanced (not yet in use)</h2> <h2>The ST2VGA Enhanced (not yet in use)</h2>
<p>I also bought a new active <a href="https://sidecartridge.com/products/st2vga-atari-st/" target="_blank">ST2VGA Enhanced</a> from SidecarTridge, but it isn't in use yet. Unlike the passive adapters, the Enhanced adds an active amplifier and filter stage for early or noisy Atari machines, and carries its own +5V supply over micro-USB. It's designed for machines with weak video output, visible "jailbars", or picky LCD inputs that fail to lock to the signal.</p> <p>I also bought a new active <a href="https://sidecartridge.com/products/st2vga-atari-st/" target="_blank">ST2VGA Enhanced</a> from SidecarTridge, but it isn't in use yet. Unlike the passive adapters, the Enhanced adds an active amplifier and filter stage for early or noisy Atari machines, and carries its own +5V supply over micro-USB. It's designed for machines with weak video output, visible "jailbars", or picky LCD inputs that fail to lock to the signal. I want to try it on the "Low" machine to see whether it cleans up the output on the <a href="https://www.amazon.de/dp/B0957KH8X7/" target="_blank">Dell SE2722HX</a>, which currently shows some faint vertical stripes, and hopefully removes them.</p>
<h2>A note on monitors</h2> <h2>A note on monitors</h2>
<p>Passive RGB-to-VGA adapters output the Atari's native timings, so color modes (ST Low and ST Medium) need a monitor that can lock to a 15 kHz horizontal sync signal. See my <a href="/retro/atari-monitor-compatibility/">monitor compatibility</a> page for which modern panels actually work. Mono mode (ST High) works on any standard VGA display.</p> <p>Passive RGB-to-VGA adapters output the Atari's native timings, so color modes (ST Low and ST Medium) need a monitor that can lock to a 15 kHz horizontal sync signal. See my <a href="/retro/atari-monitor-compatibility/">monitor compatibility</a> page for which modern panels actually work. Mono mode (ST High) works on any standard VGA display.</p>