Teledyne Lecroy HVD3000 Series Operator's Manual page 42

HVD3000 Series High-Voltage Differential Probes
off the screen, preventing measurement errors.
There are times, however, when it is convenient to use AC coupling to remove the DC
component of the measured signal from the measurement. Selecting AC10MΩ uses the
scope AC coupling at the probe output to remove any steady state value from the displayed
voltage. The maximum linear input voltage is as follows:
3102A
3106A
3206A
3220
3605A
Note: Because AC coupling is on the probe output, DC voltages beyond the probe's linear
range will cause the amplifier to saturate and inaccurately render the displayed waveform.
Do not exceed the maximum linear input value when using AC coupling.
Bandwidth Limiting
To comply with various test standards used for quantifying output noise of power supplies,
the probe is capable of switching the bandwidth limit from Off (maximum bandwidth) to 20
MHz in the channel Vertical Adjust dialog.
Voltage Range
On oscilloscopes running MAUI (XstreamDSO) v.8.5.x.x and higher, there are options as to
how the probe will set attenuation relative to the oscilloscope's V/div setting:
Auto will automatically raise or lower the attenuation when the V/div setting is greater or
lesser than a setpoint (varies by probe model). As a result, the probe can automatically
adjust attenuation to properly view the input waveform.
Lock to High locks the attenuation setting to the highest attenuation, regardless of the
V/div setting. Maintaining a high attenuation will allow small signals on a larger voltage
waveform to be accurately measured.
Manual (HVD3220 only) allows users to lock the attenuation setting to selected
attenuation, regardless of the V/div setting. This allows choice of either better noise or
accurate measurement of small signals on later waveforms.
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X50 X100
<7 V/div <7 V/div
NA 200 Vpk
200 Vpk NA
200 Vpk NA
NA NA
NA NA
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X200 X500
<28 V/div >7 V/div
NA NA
NA 2000 Vpk
NA 2000 Vpk
NA NA
760 Vpk NA
X1000 X2000
>7 V/div >28 V/div
1750 Vpk NA
NA NA
NA NA
NA NA
NA 7600 Vpk