HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

PR
Plot Relative
Moves the pen to a new plot location on the spectrum analyzer screen relative to the current
coordinates in display units.
Syntax
x
coordinate
/ \
Y.
coordinate
/ \
number
Item Description/Default Range
Number Any valid integer. Dependent on the
current pen position.
Related Commands: DSPLY, PA, PLOT, PRINT, PU, TEXT.
Example
OUTPUT 718; “IP; ” Initializes spectrum aruzlym
OUTPUT 7 18 ; “BLANK TRA ; ANNOT OFF ; ” Clears the display.
OUTPUT 718;“GRAT OFF;” Turns off graticule.
OUTPUT 718;“PU;PA 0,100;” Rxitions pen.
OUTPUT 718;“PD;PR lOO,O,O,-lOO,-lOO,O,O,lOO;” Drawsa rectangle.
Description
Vector coordinate sets (x,y pairs) following the PR command can be either positive or negative,
depending on the direction of the individual vectors to be drawn. PU (pen up) and PD (pen
down) commands tell the spectrum analyzer to draw or not draw the vectors on the screen.
(See “PU” and “PD.“)
Display units are the scaling units of the spectrum analyzer display for on screen graphics
commands such as PA or PR. See “PA” for more information about display units.
The coordinates of the lower left screen corner of the screen are -4O,-22 and the upper right
screen corner of the screen are 471,233. For the graticule area, the coordinates of the lower
left corner of the graticule are 0,O and the coordinates of the upper right graticule area are
400,200. For example, you could execute “PU;PA 0,O;PD;PA 0,200,400,200,400,0,0,0;” to draw
a box around the graticule area.
Because PR is an active function, executing PR causes the active function area on the spectrum
analyzer screen to blank. To prevent the text following PR from being written in the active
function area, execute hold (HD) after PR.
5444 Programming Commands
XPR