16
©
Velleman
VPS10 Technical Doc
5 - 6 Input amplifier calibration
Press
UP
button (display indicates
call
.)
Apply 100mV / 1KHz sine
Adjust RV2 (CAL) until display indicates
PASS
Apply 100mV / 1KHz sine
Press
UP
button (display indicates
gain
)
Adjust RV3 (GAIN) until display indicates
PASS
7– 10 Input selector test
Press
UP
button:
0.2V/div test
Apply 100mV / 1KHz sine
Check
PASS
Press
UP
button:
0.4V/div test
Check
PASS
Press
UP
button:
1V/div test
Apply 1V / 1KHz sine
Check
PASS
Press
UP
button:
2V/div test
Check
PASS
11- Center adjust
Press
UP
button (display indicates
center
)
Short circuit input
Adjust RV4 (CENTER) until display indicates
PASS
12– End
