Yes, you are entitled to such things as the maintenance record and calibration history of the machine. You can obtain that by making a discovery request to the prosecutor.
The information you are looking for is part of an omnibus motion that your lawyer will make asking for discovery materials, hearings, and relief from the court. If you are proceeding pro se you are making a big mistake, have a good criminal lawyer handle the case..
I agree with both attorneys who have responded to your question. I have traditionally requested the mentioned information directly from the Minnesota Bureau of Criminal Apprehension breath testing division. I believe the cost is $10.00. Simply send a letter requesting history for 30 days prior and after your test. Also, ask for all maintenance records for the machine. It is helpful if you also include a copy of your actual test record. Just another way to get the information. Good luck.