B737 CAPT MISREAD THE ACARS TKOF PERFORMANCE INFO AND USED REDUCED TKOF THRUST LOWER THAN REQUIRED.

Narrative

WHILE I WAS PROGRAMMING THE FMC PRIOR TO DEP; I INCORRECTLY ENTERED A WARMER THAN CORRECT REDUCED THRUST TEMP. I PULLED; VIA ACARS; THE REDUCED TEMP FOR DEP FROM PDX RWY 28R. THAT TEMP WAS 40 DEGS C FOR OUR WT THAT DAY (INCLUDING THE NOTAM NON AVAILABILITY OF THE LAST 1000 FT OF RWY 28R). HOWEVER; I PROGRAMMED THE FMC WITH 48 DEGS C WHICH CAUSED THE REDUCED PWR TKOF SETTING TO BE MUCH LOWER THAN APPROPRIATE AND; THEREFORE; LENGTHENING THE TKOF ROLL NEARLY INTO THE LAST 1000 FT OF THE RWY; WHICH WAS NOTAMED OTS DUE TO EQUIP WORKING ON THE END OF RWY. CONTRIBUTING TO THIS INCIDENT WAS 40 DEGS AND 48 DEGS (48 DEGS IS THE REDUCED NUMBER 8 OUT OF 10 TIMES) LOOK VERY SIMILAR ON THE SMALL ACARS PRINTOUT; MY COPLT MISSED THE PROGRAMMING ERROR; AND FINALLY MY MISSING THE XCHK ON THE PRETKOF CHK THAT THE PROGRAMMED NUMBER WAS REALLY THE CORRECT NUMBER. IT WAS DISCOVERED BECAUSE I WAS UNCOMFORTABLE WITH THE SEPARATION ON TKOF BTWN OURSELVES AND THE EQUIP. IN THE FUTURE; I WILL INSIST THAT THE PRINTOUT BE XCHKED WITH FMC AND THE PRINTOUT BE DISPLAYED IN A PROMINENT PLACE DURING TAXI OUT.