THORLABS MX10C Series User Manual page 18

MX10C, MX40C Series of Optical Transmitters
In the Analog mode, the Max Output Swing is locked at the maximum set point of 7.0 V
linearly with minimal distortion. However, in order to do this, the user must supply a signal with small enough amplitude so the
amplifier does not saturate, or clip. This mode is recommended for analog signals or higher order modulation formats such as
PAM4. The crossing point adjustment can usually be left at 0, but the user may find other values achieve lower distortion.
Maximum linear input is listed in the specifications.
Figure 20 Amplifier Gain Curves Illustrate Difference between Digital and Analog Amplifier Modes
Page 14
Figure 19 Amplifier Crossing Point Setting
Chapter 4: Operating Instructions
, so the amplifier can drive the modulator
pp
Amplifier is in Analog mode,
which sets the output swing to
its maximum value.
Only the crossing point can be
adjusted.
Analog mode sets output swing to
max. Provides largest linear input
region.
(Orange line)
Digital mode provides adjustable swing
and adjustable output amplitude.
Output clips at selectable levels.
TTN048898-D02