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50
REMOTE Source
60
OUTPUT Source;"*RST"
70
OUTPUT Source;"FREQuency:MODE SWEep"
80
OUTPUT Source;"FREQuency:STARt 4 GHZ"
90
OUTPUT Source;"FREQuency:STOP 7 GHz"
100
OUTPUT Source;"POWer:LEVel -5 DBM"
110
OUTPUT Source;"SWEep:TIME 500MS"
120
OUTPUT Source;" :MARKerl:STATe 0N;FREQuency 4.5GHZ"
130
OUTPUT Source;"MARKer2:STATe 0N;FREQuency 611lE6"
140
OUTPUT Source;"*OPC?"
150
ENTER Source;X
160
OUTPUT Source;"POWer:STATe ON"
170
OUTPUT Source;"INITIate:CONTinuous ON"
180
190
PRINT "Source setup complete."
PRINT "Verify that the source is sweeping from"
200
210
PRINT "4 GHz to 7 GHz at a power of -5 dBm,"
220
PRINT "with a sweeptime of 0.5 seconds."
230
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: Set the source to its initial state for programming. The *RST
state is not the same as the PRESET state. For complete details
of the instrument state at *RST, see "SCPI Command Summary,"
in Chapter 2.
70: Select the frequency mode to be SWEEP instead of the default
sweep mode of "CW" that was selected with *RST.
80: Set the source start frequency to 4 GHz.
90: Set the source stop frequency to 7 GHz. Note the optional
usage of the short-form mnemonic, "FREQ".
100: Set the source's power level to -5 dBm.
110: Set the sweeptime to 500 ms. Notice that upper/lower case in
commands does not matter. Also spaces before the suffix ("MS")
are not required in SCPI.
120 and 130: Set markers 1 and 2 to a fixed value. Notice that the
value for marker 2 does not end with a frequency suffix. Hertz is a
default terminator and is understood.
140: Wait until the source has completed setting up the commands
that have been sent so far before turning on the output.
150: The ENTER statement causes the program to wait here until
the source responds to the previous *OPC? with a '1'.
Getting Started Programming 1-91
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