ALTDEV ALT OVERSHOT. ACR CLBS THROUGH ITS ASSIGNED ALT; BUT RETURNS TO THE PROPER ALT PROMPTLY.

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WE WERE CLRED TO 7000 FT MSL AND I HAD MADE THE 1000 FT CALL WHEN LEAVING 6000 FT. THE ALT ALERTS IN THIS TYPE ACFT ARE NOT VERY LOUD AND VERY DIFFICULT TO HEAR; ESPECIALLY WHEN THERE IS COMS GOING ON THE RADIOS. IT WAS A NICE DAY AND I WAS LOOKING OUTSIDE FOR ANY TFC. IT WAS ALSO ONLY THE SECOND WK THAT I WAS FLYING OUT OF MIA AND WAS TRYING TO GET FAMILIAR WITH THE OUTLYING AREA AS FAR AS RECOGNIZABLE LANDMARKS. PLUS I JUST TRANSITIONED INTO THIS AIRPLANE 2 MONTHS AGO AND MY FO HAS BEEN FLYING IT FOR MORE THAN 2 YRS. I WAS PROBABLY RELYING MORE ON HIS EXPERIENCE IN THE AIRPLANE THAN WHAT I SHOULD HAVE. BEING THAT CLOSE TO MIA THERE WAS A LOT OF TALK ON THE RADIO AND I MISSED THE 100 FT WARNING. NEXT THING I KNOW; WE ARE AT 8000 FT. WHILE PULLING THE PWR BACK TO FLT IDLE AND LOWERING THE NOSE TO START A DSCNT; I CHKED THE TCASII AND NOTICED THAT WE HAD TFC AT 8400 FT ABOUT 7 MI OUT. THE CTLR NEVER SAID ANYTHING; SO I DO NOT KNOW IF HE NOTICED. WHILE THIS IS A VERY AUTOMATED AIRPLANE; THIS TIME IT WAS THE HUMAN SIDE THAT FAILED AND NOT THE AUTOMATED SIDE AS YOU READ SO OFTEN. FROM NOW ON; I WILL HAVE TO SPEND MORE TIME LOOKING INSIDE THE COCKPIT THOSE LAST 1000 FT AND NOT GAZE AT LANDMARKS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT WAS FLYING A SAAB 340B AT THE TIME OF THIS INCIDENT. HE SAID THAT HE NOTICED THE OVERSHOOT AT ABOUT THE SAME TIME AS HIS FO AND; EVEN THOUGH THE FO WAS FLYING; THE CAPT PULLED BACK THE PWR TO ALLOW THE DSCNT TO THE CORRECT ALT TO BEGIN.