Adjusting The Waveform's Position; Coupling; Overload Protection; Coupling Setup - LeCroy SDA Operator's Manual

Adjusting the Waveform's Position

Turn the vertical offset adjust knob directly above the channel button whose waveform you want
to move vertically.
Or, you can touch inside the Offset field and type in a value on the pop-up keypad. To set the
vertical offset to zero, touch the Zero Offset button directly below the Offset field.

Coupling

The choices of coupling are as follows:
•
DC 50 (all instruments)
•
GROUND (all instruments)
•
DC 1 M (WavePro & WaveRunner instruments)
•
AC 1 M (WavePro & WaveRunner instruments)

Overload Protection

The maximum input voltage is 4 V peak. Whenever the voltage exceeds this limit, the coupling
mode automatically switches from DC 50 Ω to GROUND. You will then have to manually reset
the coupling to DC 50 Ω, as described next.

Coupling Setup

1. In the menu bar, touch the Vertical button, then Channel X Setup... in the drop-down menu.
2. Touch inside the Coupling field and select a coupling mode from the pop-up menu.

Probe Attenuation

Setting Probe Attenuation

LeCroy's ProBus system automatically senses probes and sets their attenuation for you. If you
want to set the attenuation manually,
1. In the menu bar, touch Vertical, then select a channel from the drop-down menu.
2. Touch inside the Probe Atten. data entry field
selection or touch Var (variable). If you choose Var, type in a value using the pop-up numeric
keypad.
68
. Touch a divide-by menu
SDA-OM-E Rev H