How to remain small font size sharpness in large area when print pdf to small papersize

example text in large area to be printed to ISO A1 scale 1_1000.dgn

Attached example file

Hi all

I have an question regarding how to remain font sharpness for font when plot to pdf in large area with small papersize.

If you have ex. 5km x 1km area with text that is size 1m in widht and high, how do you get the text to be nice and you can read it?

Example:

3800m widht and 1800m high area what I want to plot to an A1 paper size but also to be able to read the text in every 10m sektion:

 Here is an sample what I created when i changed the text size on an example lenght, text is from smallest 0.1m to large text 2.5 isch.

Here is the result just now:

Area:

Detail font examples from 0.1m to 2.5m isch in dgn file, i Have done this to create the same effect in small area as it would be :3800m widht and 1800m high area .

Result  within same narrow area in pdf:

When I try to take the whole 3800m widht and 1800m area none of the normal sized (0.9m) txt size cant be read, they are just  crap text, you can not define any text in pdf. attach the result from the small area

Text sharpness when print large sheet_how to solve this.pdf

In Autocad you can play with the resulution and that helps in Autocad to solve this issue (print to pdf with resolution 4800x4800) but the resolution in Microstation is only for raster? or is it??. What I seek is similar option setting as in Autocad, they have one resolution for vector (as the font is) and one for raster what I have tested to be best as 600dpi so the file doesn´t grow so big if you have an raster file as raster referens to your plot/print to pdf.

Hope that the example file and screen shots are describing enough.

Best regards

Tom