Setting Up A Typical
In swept operation, the swept signal generator is programmed for the
Sweep, Example
proper sweep frequency range, sweep time, power level, and marker
Program 3
frequencies for a test measurement. This program sets up the swept
signal generator for a general purpose situation. The instrument is
the same as in program 1. 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
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
6111E6"
140
OUTPUT
Source;"*OPC?"
150
ENTER
Source;X
160
OUTPUT
Source;"POWer:STATe
ON"
170
OUTPUT
Source;"INITIate:CONTinuous
ON"
180
CLS
190
PRINT "Source setup complete."
200
PRINT "Verify that the source is sweeping from"
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 toitsinitial 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.
Getting Started Programming 1-93
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