TTLs: Add system description section + revise noise/jitter notes #77

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\end{threeparttable}
\end{table}
Low-jitter applications should note carefully the jitter introduced by the signal isolator. Noise is also introduced between the primary and secondary domains by the DC/DC converter. Where noise or jtter are crucial, it is instead recommended to use non-isolated cards such as 2238 MCX-TTL or 2245 LVDS-TTL.
Low-jitter applications should note carefully the jitter introduced by the signal isolator. Noise is also introduced between the primary and secondary domains by the DC/DC converter. Where noise or jitter are crucial, it is instead recommended to use non-isolated cards such as 2238 MCX-TTL or 2245 LVDS-TTL.
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DC/DC converter not convertor?

DC/DC converter not convertor?
Minimum pulse width was measured by generating pulses of progressively longer duration through a DDS generator and using them as input for a BNC-TTL card. The input BNC-TTL card was connected to another BNC-TTL card as output. The output signal is measured and shown in Figure \ref{fig:pulsewidth}.