Schematic plot of little large circuit

may be I can show you part of the circuit, still not clear, I cant read transistors information from the image

If you use the Save Image form and increase the resolution:

Then the picture can improve from this:

To this with 4x resolution increase (you may need to click on it):

To this with 16x resolution (the problem here is that the lines are pretty thin and so they appear faint at normal resolutions):

What you really want for documents is a vector format rather than a raster format - the standard way used to be to use the Print mechanism to produce EPS (Encapsulated PostScript), but unfortunately Microsoft dropped support for that. There's a request for SVG output from Virtuoso (this exists for waveforms, but not for schematic or layout), but it's not been implemented yet (there are some infrastructure optimisation reasons why it's difficult). Might be a good idea to contact customer support to add another request to the list of others asking for this (it all helps with prioritisation).

You may be able to output PostScript and find a PostScript to SVG (Scalable Vector Graphics) converter.

Andrew

Dear NorNand (and Andrew for your information),

The method I’ve been using, which appears to provide very clear results, relies on printing the schematic in Postscript format and then converting it to a portable network graphics file. This for type can be used in Microsoft applications and preserves the resolution. These are the steps I follow:

1. In my .cdsplotinit file in my $HOME directory, I define a black and white generic Postcript plotter as follows:

generic_bw|Postscript printer: \

        :manufacturer=Adobe: \

        :type=epsfi: \

        :spool=lp -d agrprt270dup: \

        :maximumPages#1: \

        :resolution#300: \

        :paperSize="9x5.5" 2700 1650:

2. From the Virtuoso schematic File-> Print command, I set the options shown below in its GUI to plot the schematic to a file in my cadence working directory. Note that the plotter I specify is “generic_bw” which I define in step 1.

3. From the cadence working directory at its UNIX prompt, I use the following script to convert the Postscript file to a Portable Network Graphic file “.png”. The script relies on a version of Ghostscript on your system in your UNIX path. Optionally, the script calls Imagemagick to trim the white space from the file. If you do not have that installed in your UNIX environment, you may comment out that line.

—————————————— start of script —————————

gs -dSAFER -dBATCH -dNOPAUSE -r600 -dEPSFitPage -sDEVICE=pngmono -dTextAlphaBits=4 -dDEVICEWIDTHPOINTS=648 -dDEVICEHEIGHTPOINTS=396 -sOutputFile=$1.png  $1.ps

# Optional - may distort image

magick $1.png -trim $1_trimmed.png

echo "Done, png and trimmed file are \"$1.png\" \"$1_trimmed.png\"."

—————————————— end of script —————————

An example is attached of a .png file created using this method. I hope this helps and at least provides an alternative!

Shawn

Dear Andrew,

Thank you for your answer, I have tried to export the image with higher resolution and as you exactly said, the lines will be faint, then below I made it with 4X 

For some reason, if I compare it to your picture with same resolution your picture still looks like having better dark lines

In my next attempt I print the circuit to eps, then I converted it to  pdf to post it here, where still the image not good for reporting

test3pdf.pdf

By the way the schematic print of small circuit is looking good in either of the cases above

you see from the pdf that values of the transistors are not showing

Here also pdf file generated from postscript file, it is looking better then pdf generated from eps, however, transistor values are still not showingtest_ps.pdf

With EPS it might be showing the image (EPS includes both an image for display and the PostScript for printing).

Either way, investigating this further would be best achieved via customer support (I certainly don't have the bandwidth right now to do more experiments to try to reproduce what you're seeing).

Andrew.

Thank you for the suggestion, I updated the .cdsplotinit with the black and white instructions you gave

Thank you for the suggestion, I updated the .cdsplotinit with the black and white instructions you gave