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

LB Label
Description
Each text character is specified by 8 bits in an 8 bit data byte, which immediately follows the
LB command. Additional characters can be displayed using CHR$(code) where code represents
the ASCII code. (See line 50 of the example.) Refer to the following tables for additional
characters and label functions available.
LB displays the text at the current pen position. When using LB, the end of the text characters
must be terminated. If the text is not terminated, instructions and other text following the
actual label’s statement are displayed on the spectrum analyzer screen. The label mode can
always be terminated with an ASCII end-of-text code (decimal code 3), or with a character
specified previously by the DT command. The terminator character itself must immediately
follow the label.
To remove the text written by the LB command, write spaces over the text or use the CLRDSP
command.
The LB command also enters the text into the display list. See “DA” for more information
about the display list.
5-264 Programming Commands