Scans by ArtekMedia © 2007
To determine the exact default location of the zero point, load the
HP 7090
with paper, press
(SHIFT) INIT
to initialize the instrument, select a pen, and
press the
ZERO
push button. This invokes the zero-point positioning function
and moves the pen above the current zero point. The
ZERO
indicator lights,
indicating that the zero-point positioning function is in effect. Similarly,
pressing the
FULL SCALE
push button invokes the full-scale positioning func
tion and places the pen above the current full-scale point. The
FUL
L
SCALE
indicator lights to show the function is in effect.
To reposition the zero point when you are preparing a recording area,
follow the steps shown in the following illustration.
1.
Press ZERO to inuoke
the uro·positioning ..
(unction ZERO indi·
cator on).
2.
Use the pen cursor con·
trols to mOlJe the pen
PLOTTER PAPER
to the desired zero
point.
3.
Press ZERO a second
time to enter the new
zero
position and exit
the positioning {unc·
tion (ZERO indicator
of().
t
PEN
�\--�:�ITIONEO
•
ZERO
DEFAULT
ZERO
NOTE:
Always exit the zero-point positioning function to prevent acci
dental repositioning of the zero point
. •
Positioning the
Zero Point
Measurement Setup Operations
3-7