The Label Instruction, Lb - HP 7470A Interfacing And Programming Manual

Default control character ETX
terminates by perForming end­
oF-text Function.
Printing characters terminate.
#but are also printed.#
Control characters terminate
and perform their function.
The Label Instruction, LB
DESCFNPTIUNThe label instruction, LB, provides the means to letter
text, expressions, or string variables using the currently defined char­
acter set.
DEE The label instruction can be used to annotate graphs or create
text—only overhead transparencies.
SYNTAX LB c...ct
where t is the label terminator, either the default ETX
character (decimal equivalent 3), or another character
defined by the DT instruction.
EXPLANATIONAll printing characters following the LB mnemonic
are drawn using the currently selected character set. The set used is
specified by the commands CA or CS and selected by the commands
SA or SS, or the ASCII control characters shift—out o r shift-in (decimal
equivalent 14 and 15 respectively). If not specified, the default character
set (set 0) is used.
The direction, size, and slant of the characters assume default values if
not previously specified by DI, DR, S1, or SR commands.
The label mode can be terminated only by sending a label terminator
at the end of the character string. Refer to The Define Terminator In­
struction. (With an HP-IB interface, the bus commands interface clear
IFC, device clear DCL, or selected device clear SDC will also terminate
label mode. Refer to Bus Commands, Chapter 10.)Unless a label string
is terminated, subsequent HP-GL commands will appear as labels in
your plot.
The label begins at the current pen position. Before executing the LB
command, the pen should be moved to the location where labeling is to
begin using one of the plot commands (PA, PR, or a character plot
command CP) or by front-panel controls. This establishes the lower—left
LABELING 5-7