1. An external control voltage would accomplish frequency sweeping or frequency modulation. 2. A negative control voltage will maintain the switch ( e . g. 3. Control voltage is analog and by extension infinitely variable.4. The instrument contains a sophisticated matrix for the handling and routing of control voltages . 5. The mic trim pot on the console sends a control voltage to the pre. 6. This means that audio signals can be used to modify control voltages and vice versa. 7. Sophisticated designs may also adjust the control voltage over time to compensate for crystal aging. 8. Sending this control voltage ( CV ) " steals " one voice from the master. 9. The control voltage can be used to occasionally adjust the reference frequency to a NIST source. 10. The ribbon is a linear potentiometer that generates different control voltages depending on where it is touched.