GW Instek SFG-830 User Manual - Manual (Page 32)

SFG-830 p.29
o Use [▲] and [▼] keys in MODIFY column or press numeric keys [0]~[9] to input
the desired value.
Example:
i.) If the display shows “00001 1000” and 00001 blinks, it means that the
Calibration Number is ready for input. Press FUNCTION [ ] key once, then
1000 becomes blinking and you can input the Calibration Value. Press
FUNCTION [ ] key once, then 00001 will blink again.
ii.) Press [4], [0], [6] and [Enter] keys will get to the Square Wave Symmetry
Calibration mode, and the Calibration Value is 2000. Press FUNCTION [ ] key
once, and 2000 will be blinking. Just input the desired figures, then the
symmetry of square wave will be changed.
The table below lists the corresponding Calibration Numbers to Calibration items:
Calibration Item Calibration Number Calibration Mode
Positive Attenuator Calibration 1 ~ 8
Negative Attenuator Calibration 9 ~ 16
Carrier Null Calibration 17 ~ 113
Amplitude of Sine Wave 114 ~ 307
Amplitude of Square Wave 308 ~ 404
Amplitude of Triangle Wave 405
Symmetry of Square Wave 406 ~ 502
Manual Calibration
Sine DC Gain Calibration 503
Square DC Gain Calibration 504
Triangle DC Gain Calibration 505
Offset Adjustment 506 ~ 602
Auto Calibration
The procedure of manual calibrating with software is as follows:
(1) Positive Attenuator Calibration
To calibrate the positive attenuator, you should go through Calibration Number 1 ~
8 in turn, and perform the following 3 steps for each number.
n Set the Calibration Number.
o Use a DMM (FLUKE-8842) at DCV range to measure the output.
p Key in an appropriate Calibration Value to make the output to be the particular
value listed below:
n
Calibration Number
p
Output should be :
1 39
± 0.1mV
2 78
± 0.5mV
3 156
± 1mV
4 312
± 1mV
5 625
± 2mV
6 1.25V
± 10mV
7 2.5V
± 10mV
8
o
Use a DMM (FLUKE-8842) at
DCV range to measure the
output
5V
± 10mV