Hitachi HT-4139-48 Instruction Manual page 50

◆When you run the test with papers other than A4/Letter size.
・For regular size paper
・ Specify paper size (Arbitrary)
2-28
Specify paper size as "Ax / Bx".
Initial setting is A4 L (2100×2970)
・A4～A7：Landscape and Portrait
・A3：Portrait
・B4～B7：Landscape and Portrait
・Japanese post card（1480×1000）
Specify paper size arbitrary from the range
below.
Length: 420 mm – 74 mm
Width: 305 mm – 74 mm
The value is entered in 0.1-mm unit.
Ex. 2100 on the screen equals 210.0mm