Can I recover deleted reports from my DSP-100 analyzer

Yes so long as you have not saved any reports since. 
  • Switch off the DSP-100 CableMeter. 
  • Hold down Key 1 and the EXIT key.
  • Keep them held down.
  • Rotate the dial to AUTOTEST - you will hear a tune.
  • When the tune has finished, release the keys. 
  • Your results are now restored.