This module provides a clamping stage for signals up to 200MHz to send analog or pulse signals up to 2V in 50ohm. the clamping levels are flat and low-noise, it can be used to improve an upper and/or lower level of an AWG pulse
The unit can be set for accurate low/high level limitvalues (1nS response). Use of these (dac/voltage/potmeter) variable levels can create a pulsegenerator with rise/fall times below 2nS
example waveforms (both persistance display mode to show noise):
Linear operation, step response
Limiting operation same input signal (improvement on noise,risetime and shape)
The unit can be used in several ways:
1- Use high and/or low limit to set/modulate the pulse levels (with dacs). Rise/fall and pulse width can still be controlled by the (commercial) pulser driving the input
2-mixed mode,example: start at low-limit level, send analog ramp or other curve end at well-defined high-limit level
ramp down to analog-defined in-between plateau
ramp to low-limit level
High level value should always be >0.3V above low level value.
Measured bandwidth is 210MHz for 0.2Vpp and 130MHz for 2Vpp.