<ul>
<li>H: Expanded frequency range 45 to 1000 Hz (CWP only)</li>
<li>S: Sync In/Out (clock/lock) (standard on CW-P)</li>
<li>V: 0-155V/0-310V Output (CW-P only)</li>
<li>L: Locking knobs (front panel potentiometers) (CW-M only)</li>
<li>-108: 200V/400V Output for (CW 801P Only)</li>
</ul>