Digital wave observation apparatus

A digital wave observation apparatus, comprising:

• first and second analog-to-digital (A/D) converters for converting input signals of associated first and second channels into corresponding first and second digital signals;
• first and second delay circuits for selectively delaying the first and the second digital signals from said first and said second A/D converters;
• wave memory means for storing output signals from said first and said second delay circuits;
• display means for displaying the output signals stored in said wave memory means;
• delay channel designating means for supplying channel designating data to designate which channel of said first and said second channels is to be delayed;
• delay value setting means operatively associated with said delay channel designating means, for supplying desired delay value setting data;
• a first command device for receiving channel designating data corresponding to said first channel from said delay channel designating means and the desired delay value setting data from said delay value setting means, and for performing a predetermined calculation to produce first delay data;
• a first delay value setting device coupled to said first delay circuit for receiving the first delay data from said first command device and for setting a delay value of said first delay circuit to a value corresponding to the first delay data;
• a second command device for receiving the channel designating data corresponding to said second channel from said delay channel designating means and the desired delay value setting data from said delay value setting means, and for performing a predetermined calculation to produce second delay data, said second command device being coupled to said first delay value setting device;
• and
• a second delay value setting device coupled to said second delay circuit and said second command service, for receiving the second delay data from said second command device and for setting a delay value of said second delay circuit to a value corresponding to the second delay data;
• and
• wherein said first delay value setting device receives the second delay data from said second command device and sets a delay value of said first delay circuit also to a value corresponding to the second delay data.