GW Instek SFG-830 User Manual - Manual (Page 34)

SFG-830 p.31
(5) Calibrating the Amplitude of Square Wave
Go through step
n
~
p
repeatedly to calibrate the output of Number 308 ~ 404.
n Set the Calibration Number.
o Use an oscilloscope with 50 ohm load to measure the output.
p Input an appropriate Calibration Value to make the output to be 10
±1Vp-p.
(6) Calibrating the Amplitude of Triangle Wave
n Set the Calibration Number to be 405.
o Use an oscilloscope at 50
Ω to measure the output.
p Input an appropriate Calibration Value to make the output to be 10 ±1Vp-p.
(7) Calibrating the Symmetry of Square Wave
Go through step
n
~
p
repeatedly to calibrate the output of Number 406 ~ 502.
n Set the Calibration Number.
o Use a fixture with 50
Ω to measure the output.
s Input an appropriate Calibration Value to make the output to be as follows:
Calibration Number Duty
406 ~ 437 50%
± 1% + 4ns
438 ~ 460 48%
461 ~ 486 45%
487 ~ 502 40%
(8) Finishing Manual Calibration
n Press [ STOR ] key.
ª “Default” will be shown on the display after 3 seconds.
(C) Automatic Calibration
n Press [Shift], [1], [8], [3], [0] keys to shift to automatic calibration mode.
ª In a few minutes “Auto Cal” will be shown on the display, indicates the
accomplishment of automatic calibration.
The table below lists the corresponding items to the Calibration Numbers:
Calibration Item Calibration Number
Sine DC Gain 503
Square DC Gain 504
Triangle DC Gain 505
Adjusting DOB_U 506 ~ 602
All of the calibrating procedure is accomplished after the automatic calibration.