LeCroy WaveSurfer 400 Series User Manual

6-38 Maintenance
6.9.3.2 Front end adjustment
6.9.3.2.1 Coarse adjustment of channel offset
Setting CHx ⇒ DC 1MΩ, 20mV/div, 0V offset, BWL=20MHz
Timebase ⇒ 1ms/div
Adjustment method
(1) Open the “Production\PichuAcqBoard\Calibration” menu within the
“Service” menu.
(2) Select “FE offsetA” from the “Curves” menu, click “Auto cal,”
remove the check mark and click “Reset current.”
(3) Select “FE gain->offsetA” from the “Curves” menu, click “Auto cal,”
remove the check mark and click “Reset current.”
(4) Adjust “Channel Offset Adjustment” in the “Maintenance2” menu so
that all channel traces appear in the center of the display screen.
(5) Press “Save To HW” to save to the EEPROM.
(6) Re-enter the “Calibration” menu.
(7) Select “FE offsetA” from the “Curves” menu, click “Auto cal” and
add a check mark.
(8) Select “FE gain->offsetA” from the “Curves” menu, click “Auto cal”
and add a check mark.
Note: The auto adjust function will not operate unless the “Auto cal” setting is restored.
6.9.3.2.2 DC gain adjustment
Adjustment standard Overshoot: 0.1% or less
Rounding: none
Setting CHx ⇒ DC 50Ω, 5mV/div, BWL=20MHz
Timebase ⇒ 2ms/div
Adjustment method Input a 500mV, 100Hz square-wave signal from the PG-506.
Adjust the smoothing of the square-wave.
Adjustment locations
CH1 CH2 CH3 CH4
Gain adj. 2R104 3R104 4R104 5R104

LeCroy WaveSurfer 400 Series Specifications

General

Brand	LeCroy
Model	WaveSurfer 400 Series
Category	Test Equipment
Language	English