GW Instek SFG-830 User Manual - Manual (Page 21)

p. 18 SFG-830
6.13 Setup of PM Modulation
SFG-830 use 256PSK (Phase Shift Key in) to generate PM modulation.
n Use [ ] or [ ] button in FUNCTION column to select SINE waveform.
o Press [ PM ] button.
p Press [ RATE ] to set up sweep RATE/TIME (range 20Hz ~ 10kHz).
q Press [ PHASE ] to set Phase Span ( range 0
o ~ 360 o ).
r Press [ MOD ON/OFF] to start performing modulation.
™
Example of the Setup of PM Modulation
To set the following conditions:
ΠMain waveform : sine. ΠRate : 100Hz.
ΠFrequency : 10kHz. ΠAngle : 100 o PSK modulation.
Procedure:
n Use [ ] or [ ] button in FUNCTION column to select SINE waveform.
o Press [ FREQ ], [ 1 ], [ 0 ], [ kHz ] buttons to set the frequency of the wave.
p Press [ PM ].
q Press [ RATE ], [ 1 ], [ 0 ], [ 0 ], [ Hz ].
r Press [ PHASE ], [ 1 ], [ 0 ], [ 0 ], [ DEG / % ] to set the phase to be 100
o .
s Press [ MOD ON/OFF ] to start performing modulation.
Note: Different sequence of the steps taken will not make any change on the execution and the
result.
6.14 The Commands of GPIB Serial Interface
This section explains the GPIB commands that applied by SFG-380. All the 69
commands, including 54 instrument commands, and 15 IEEE488.2 common
commands, correspond to the SCPI syntax. The syntax, function, and parameter
of all the commands are listed below. It is helpful for you to control the remote
instrument through either GPIB or RS232.
Example:
ibwrt “> IDN ?”
ibwrt “ SOUR : FREQ : SYNT 1000”
ibwrt “ SOUR : FREQ : STAR 1000 ; : SOUR : FREQ :
STOP 10000”
= ibwrt “ SOUR : FREQ : STAR 1000 ; STOP 10000”