How can I test a DB15 to HD15 adapter/cable without plugging it in?

[BacioiuC]

I've got my hands on a color card (ProServer PDS for SE/30) but I'm lacking a way to connect it to a VGA monitor. Ordered an adapter off of ebay but it's about a month away until I get it. A neighbor of mine who used to be an electronic engineer said he'll try his hand at making a cable that plugs into the DB15 and goes out into the VGA port. Not that I don't trust the guy, but I wanna make sure I don't ruin the color card by plugging it in with a faulty/wrong cable.

Is there any way I can test it to make sure things are fine? I do have a multimeter but I'm uncultured af in electronics. I passed him this regarding the pinout.

 

[cheesestraws]

I'd just use the multimeter in continuity mode (or resistance mode, if you haven't got a beeper) to verify that the cable matches the diagram.  It's a pain but you only have to do it once...