Agilent Technologies 8510C, Operating And Programming Manual

Page: 331 / 391

Programming Examples
Note that in order to use DATAFORM, DATARAW , or DATADATA , the c hannel to whic h the data
applies m ust b e selected. When loaded, the trace is automatically up dated. DATARAW stores
information from the raw data array for the active parameter on the Active c hannel. Ho w ev er,
there is an exception to this rule: If four parameter display is turned on, DATARAW stores al l
four raw data arrays for the selected c hannel.
T o load a memory trace, the memory display m ust b e o ( DISPDATA; ). Correction m ust b e o
( CORROFF; ) b efore cal sets can b e loaded in to net w ork analyzer memory from disk.
Note that the DISF command is used for all disk op erations (store, load, replace, delete). The
le name m ust b e enclosed in quotation marks, and BASIC usually requires that in order to
send the quote sym b ol that it b e doubled.
File Name Prefixes
If y ou examine the directory follo wing this op eration, notice that the le name is given as
FD FILE1. The three c haracter lename prex is automatically included in the directory
listing: it is the w a y in whic h the net w ork analyzer op erating system k eeps track of the data
t yp e. This lename prex is nev er used in the lename y ou select for store, load, or delete
disk le op erations. Ho w ev er, if the disk is to b e read b y the external computer directly , the
prex is considered part of the lename and m ust b e used. T able 7-3 sho ws all le name
prexes used b y the net w ork analyzer.
Printing Y our Own Messages on the Netw ork Analyzer Display
Messages of up to 50 c haracters are display ed using:
"TITL" "GOOD MORNING" ";"
This causes the message GOOD MORNING to app ear in the title area of the net w ork analyzer
display . The quotation marks are required; BASIC usually requires double marks to send
quotation marks.
T ext and graphics information can b e written to the display using a sp ecial area of net w ork
analyzer memory , with an in ternal HP-GL subset or the standard plotting language
implemen ted b y the computer.
Example 12: Making Plots Using COPY
This example requires that a prop erly addressed XY plotter b e connected to the net w ork
analyzer (system bus or RS-232 p ort). Refer to Chapter 6 for instructions. The program
measures a single sw eep with autoscaling, then plots eac h parameter.
Measuremen t results are output to a plotter connected to the net w ork analyzer system bus
using a sequence of commands to sp ecify the quadran t on the pap er, the p en n um b er, and the
data to b e plotted. The follo wing sequence plots the four parameters.
INPUT "Load Paper, then CONTINUE"
OUTPUT @Nwa;"S11; SING; LEFU; PLOTALL"
OUTPUT @Nwa;"S21; SING; LEFL; PLOTALL"
OUTPUT @Nwa;"S12; SING; RIGU; PLOTALL"
OUTPUT @Nwa;"S22; SING: RIGL: PLOTALL"
PLOTALL causes the en tire screen, except the men u, to b e plotted. Other commands to sp ecify
the part of the screen to b e plotted and the p en color may b e used.
13-26 GPIB Programming