Program Comments; Queries, Example Program - HP 8360 L Series User Manual

Queries, Example
Program 4
The following example demonstrates the use of query commands and
response data formats. Clear and reset the controller and type in the
following program:
10 Source=719
20 ABORT 7
30
LOCAL 7
40 CLEAR Source
50 REMOTE Source
60
70 OUTPUT Source;"*RST"
80 OUTPUT Source;"POWER:LEVEL -5 dBm;STATE ON"
90 OUTPUT Source;"FREq:CW?"
100 ENTER Source;F
110 PRINT "Present source CW frequency is : ";F/l.E+6;"MHz"
120 OUTPUT Source;"POWER:STATE?"
130 ENTER Source;W
140
PRINT "Present power ON/OFF state is : ";W
150 OUTPUT Source;"FREq:MODE?"
160 DIM A$[101
170 ENTER Source;A$
180 PRINT "Source's frequency mode is : "&A$
190 OUTPUT Source;"FREq:CW? MINI'
200 ENTER Source;A
210 PRINT "Minimum source CW frequency is : ";A/l.E+6;"MHz"
220 OUTPUT Source;"FREq:START?;STOP?"
230 ENTER Source;X,Y
240 PRINT "Swept frequency limits :I'
250 PRINT I' Start ";X/l.E+6;"MHz"
260 PRINT " Stop ";Y/l.E+G;"MHz"
270 END
Run the program.

Program Comments

10: Assign the source's HP-IB address to a variable.
20 to 50: Abort any HP-IB activity and initialize the HP-IB
interface.
60: Clear the computer's display.
70: Set the source to its initial state for programming.
80: Set up the source power level using a compound message.
90: Query the value of the source's CW frequency.
100: Enter the query response into the variable 'F'. The response
always is returned in fundamental units, Hz in the case of
frequency.
110: Print the CW Frequency in MHz on the computer display.
120: Query the value of a Boolean function, POWER:STATE.
Getting Started Programming 1-95