Sun workstation and HP 98789A monitor?

Tonight while looking for a wall wart for an old Hayes modem, I discovered something that I didn't know I had: some sort of monitor cable adapter. At one end is a Sun workstation style monitor connector from which four cables are connected to BNC connectors with reg, green, blue and white labels. Does anyone on this group knows if it will work with an HP (Sony) 98789A fixed frequency monitor which has R, G, B and HD and VD sync connectors (can I use just one of these syncs?). I'd hook it up to see if it works without asking, but I'd prefer not to have to carry the monitor down to the basement if it isn't going to work. :-) -- Copyright (C) 2002 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty.