GW Instek SFG-830 User Manual - Manual (Page 36)

SFG-830 p.33
(3) Checking the Amplitude of Triangle Wave
The deviation should be
±5%.
n Set conditions: Function : Triangle Wave Amplitude : 10Vp-p
Frequency : 100Hz
o Use an oscilloscope with 50 ohm load to measure the output.
p Check and make sure that 9.5Vp-p < output < 10.5Vp-p.
q Keep the same Function and Amplitude, and set Frequency to be 1kHz, 10kHz,
and 100kHz in turn.
r Perform step p~q in each frequency setting until the Frequency = 100kHz.
(4) Check the Accuracy of DC Offset
The deviation should be
±1.5% + 1mV.
n Set conditions: Function : Sine Wave Amplitude : 0.0Vp-p
Frequency : 1kHz DC Offset : 5V, -5V, 0V in turn
o Use a DMM at DCV range with 50 ohm load to measure the output.
p Check and make sure the corresponding output to each DC Offset is in the
range listed below:
DC Offset Output
5V 4.925V
≤ output ≤ 5.075V
-5V -5.075V
≤ output≤ -4.925V
0V -1mV
≤ output ≤ +1mV.
(5) Checking the Sub Harmonic
The deviation should be <-50dBC.
n Set conditions:
Function : Sine Wave Amplitude : 10Vp-p
DC Offset : 0V
o Use a spectrum analyzer to measure the output.
p Check and make sure that the corresponding output to each Frequency setting
is in the range listed below:
Frequency
Center Frequency of
Spectrum Analyzer
Harmonic
102kHz 51kHz
1.001MHz 501kHz
10.001MHz 5.001MHz
20.001mHz 10.001MHz
30.0mHz 15.0mHz
< -26.02dBm