HP 7475a, Operation And Interconnection Manual

Page: 38 / 101

Rear Panel
1 1.
2-20
PLOTTER
OPERATION
ENTER + Pl/P2
-
Defines the current pen loca­
tion as the new PI or P2 scaling point. Re­
member to set PI first, since P2 moves when
PI is moved. Refer
to
the section in this chapter
entitled Setting the Scaling Points.
\
ENTER + FAST
- Rotates the coordinate system
90·degrees from its current state. Refer to the
section in this chapter entitled Rotating the
Coordinate System.
ENTER + PEN#
-
Stores the pen currently held
in the pen holder into the corresponding num­
bered carousel location, if possible. The pen
holder then returns to its previous location.
ENTER + VIEW
-
Resets all power-up default
conditions. This is the same as turning the
power off and then on again.
NOTE:
If the pen holder is moved manually,
or an obstruction is encountered, the serv�
motors become inoperative and the
ERROR
light
starts blinking. In this case, the plotter will
not respond to
ENTER
+
VIEW
or any other
front-panel control. The only way to correct
this situation is to remove the obstruction
and cycle the
......,
LINE
switch to
OFF,
then
O N
again
. •
ENTER
(digitizing) - The current paper-size
light
(e/A3
or
AlA4)
will blink when the plotter
receives the HP·CL instruction, DP. This blink­
ing light indicates the digitizing mode is ini·
tiated and the pen should be moved to the
point to be digitized. If
ENTER
is then pressed,
the paper-size light stops blinking and the
actual
X-
and V-coordinates of the point and
the pen status (up or down) are stored in the
plotter's output buffer. This data is output to
the computer when the plotter receives the
HP-CL instruction, OD. Refer to the [nterfae­
ing and Programming Manual for complete
digitizing instructions.
This rocker switch controls application of ac
power to the plotter (refer to Line Voltage
Selection).