HP 5528A

Model 552 8A
S traightn ess Me as urement s ( Along a Ho ri zo ntal Ax is )
J. Air Turbulence
Air turbulen ce is caused by temperature differ en ces in the ai r. To re mo ve the se differen ces,
you should remove their so ur ces (e.g., open doors, lamp s, exhaust lans, motors, el c.).
Alter na tively, yOll shou ld mix the air thoroughly along the measlIre rnc"t path, lIsinl3 a large fan.
If you ca n redu ce the sources of temperature differences and mix the measureme nt path air,
you'll
be eve" bener off.
10- 25