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160: Recall the instrument state from register 1. It should contain
the sweeping state.
170 to 190: Print a message on the computer display and pause.
200: Recall the instrument state from register 2. It should contain
the CW state.
210 and 220: Print messages on the computer display.
Looping and
Clear and reset the controller and type in the following program:
Synchronization,
Example Program 6
10
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160
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Source=719
ABORT 7
LOCAL 7
CLEAR Source
REMOTE Source
CLS
OUTPUT
Source;"*RST"
OUTPUT Source;
"FREQ:START
4 GHZ; STOP 5 GHZ; MODE SWEEP"
OUTPUT Source;"POWER:LEVEL -1 DBM; STATE ON"
OUTPUT Source;"SWEEP:TIME I"
OUTPUT
Source;"*OPC?"
ENTER Source;X
REPEAT
DISP "Enter number of sweeps to take :
CO to exit]";
INPUT N
IF
N>O
THEN
FOR
I=1
TO N
DISP "Taking sweep number : ";I
OUTPUT
Source;"INIT:IMM;*OPC?"
ENTER \
NEXT I
END IF
UNTIL N=O
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: Setup the frequency parameters using a compound message.
90: Setup the source’s power level and state using a compound
message.
Getting Started Programming 1-95