Narrative:

I had just taken a position relief briefing from the previous controller. ZOB is working with the dsr system now. With this new system, each controller can set up the scope to his/her liking, ie, background color, map brightness, target brightness, etc. So it takes slightly longer to set up the scope than it did with the old M1 system. I was working the position without a radar associate because traffic was slow. I was moving the keyboard, the cursor ball, and the display keypad, and the d-side keyboard to where I could use them best, plus setting up the scope, and working the 3 aircraft I had. The first few mins on position are usually busy with setting up the equipment, and it is distracting. I descended the first aircraft to 11000 ft and I was stepping down the second over the first. The first aircraft was at 13900 ft when I asked his rate of descent. He said 2000 FPM. The second was at 16000 ft. At #1's rate of descent, I figured #2 couldn't catch him, so I gave him a 12000 ft crossing clearance. He dumped it much faster than I expected. I could have provided more positive control by giving the first aircraft a hard crossing restr. But when I first descended him, I thought that I wouldn't need it. The dsr could be enhanced to help with set up. There is a patch available to allow us to sign on and the scope would automatically configure to each controllers preferences. ZOB doesn't have it on-line yet. The sooner they get it on-line the easier it would be for all of us.

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Original NASA ASRS Text

Title: RPTR STATES THAT WHILE TRYING TO PERSONALIZE HIS DSR SCOPE, ACFT X AND Y WERE DSNDED. RPTR BELIEVED THAT ACFT Y WOULD NOT OVERTAKE ACFT X ON THE DSCNT. SEPARATION WAS LOST, RESULTING IN AN OPERROR.

Narrative: I HAD JUST TAKEN A POS RELIEF BRIEFING FROM THE PREVIOUS CTLR. ZOB IS WORKING WITH THE DSR SYS NOW. WITH THIS NEW SYS, EACH CTLR CAN SET UP THE SCOPE TO HIS/HER LIKING, IE, BACKGROUND COLOR, MAP BRIGHTNESS, TARGET BRIGHTNESS, ETC. SO IT TAKES SLIGHTLY LONGER TO SET UP THE SCOPE THAN IT DID WITH THE OLD M1 SYS. I WAS WORKING THE POS WITHOUT A RADAR ASSOCIATE BECAUSE TFC WAS SLOW. I WAS MOVING THE KEYBOARD, THE CURSOR BALL, AND THE DISPLAY KEYPAD, AND THE D-SIDE KEYBOARD TO WHERE I COULD USE THEM BEST, PLUS SETTING UP THE SCOPE, AND WORKING THE 3 ACFT I HAD. THE FIRST FEW MINS ON POS ARE USUALLY BUSY WITH SETTING UP THE EQUIP, AND IT IS DISTRACTING. I DSNDED THE FIRST ACFT TO 11000 FT AND I WAS STEPPING DOWN THE SECOND OVER THE FIRST. THE FIRST ACFT WAS AT 13900 FT WHEN I ASKED HIS RATE OF DSCNT. HE SAID 2000 FPM. THE SECOND WAS AT 16000 FT. AT #1'S RATE OF DSCNT, I FIGURED #2 COULDN'T CATCH HIM, SO I GAVE HIM A 12000 FT XING CLRNC. HE DUMPED IT MUCH FASTER THAN I EXPECTED. I COULD HAVE PROVIDED MORE POSITIVE CTL BY GIVING THE FIRST ACFT A HARD XING RESTR. BUT WHEN I FIRST DSNDED HIM, I THOUGHT THAT I WOULDN'T NEED IT. THE DSR COULD BE ENHANCED TO HELP WITH SET UP. THERE IS A PATCH AVAILABLE TO ALLOW US TO SIGN ON AND THE SCOPE WOULD AUTOMATICALLY CONFIGURE TO EACH CTLRS PREFERENCES. ZOB DOESN'T HAVE IT ON-LINE YET. THE SOONER THEY GET IT ON-LINE THE EASIER IT WOULD BE FOR ALL OF US.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.