GULFSTREAM G550 FLT CREW HAS AN ALT DEV DURING THE TEB 5 DEP.

Narrative

WE WERE ORIGINALLY CLRED FOR THE TEB 5 DEP DEPARTING RWY 1. WE HAD BRIEFED THIS DEP. AS WE TAXIED OUT THE WIND CHANGED AND WE WERE CLRED FOR RWY 24. WE BRIEFED FOR THE CHANGES IN THE TEB 5 DEP USING RWY 24 INCLUDED THE FACT THAT ONE PLT REMAIN IN 'GREEN' FOR THE DME REQUIRED FOR THE CLB FROM 1500 FT TO 2000 FT AFTER 4.5 MI OFF THE TEB VOR WHICH WAS TUNED ON BOTH SIDES. WE TOOK OFF AND I WAS PF. I LEVELED AT 1500 FT MSL ACCORDING TO THE SID; AND WAS LOOKING FOR THE 4.5 DME AND COULD NOT FIND IT ON THE TUBES. ADDING TO THE CONFUSION WAS THAT THIS IS A NEW ACFT WITH TOTALLY DIFFERENT EFIS SCREENS. SINCE I COULD NOT SEE THE DME I FLEW FOR A PERIOD OF TIME ESTIMATING THAT WE HAD REACHED 4.5 MI AND INITIATED THE CLB TO 2000 FT. I NOT YET QUITE REACHED THE 4.5 DME POSITION FOR THE CLB. THE CTLRS THEN INQUIRED ABOUT OUR ALT ISSUING A TFC RPT. THERE WAS NO TFC CONFLICT. ATC NICELY ADVISED US OF OUR MISTAKE AND WE PROCEEDED. IN REVIEWING THE SITUATION I FEEL THAT THE RWY CHANGE AND THE REBRIEF TO RWY 24 ADDED TO THE ISSUE. WHILE RADIOS WERE SET; AND I SPECIFICALLY LOCATED THE DME READOUT POSITION ON THE EFIS SCREEN. DURING THE TAKEOFF; I HAD TROUBLE FINDING THE DME READOUT. I SHOULD HAVE SPENT MORE TIME ORIENTING MYSELF ON THE DME POSITION THAN I DID. THE NEW 4 SCREEN EFIS TUBES HAVE A LOT MORE INFO AND ARE QUITE CLUTTERED UNTIL YOU GET USED TO THEM. A NEW ACFT REQUIRES VIGILANCE; AND APPARENTLY MORE PREPARATION THAN I GAVE IT.