Rule 103. Rulings on evidence.

(a) Effect of erroneous ruling. - Error may not be predicated upon a ruling which admits or excludes evidence unless a substantial right of the party is affected, and

(1) Objection. - In case the ruling is one admitting evidence, a timely objection or motion to strike appears of record. No particular form is required in order to preserve the right to assert the alleged error upon appeal if the motion or objection clearly presented the alleged error to the trial court;

(2) Offer of proof. - In case the ruling is one excluding evidence, the substance of the evidence was made known to the court by offer or was apparent from the context within which questions were asked.

Once the court makes a definitive ruling on the record admitting or excluding evidence, either at or before trial, a party need not renew an objection or offer of proof to preserve a claim of error for appeal.

(b) Record of offer and ruling. - The court may add any other or further statement which shows the character of the evidence, the form in which it was offered, the objection made, and the ruling thereon. It may direct the making of an offer in question and answer form.

(c) Hearing of jury. - In jury cases, proceedings shall be conducted, to the extent practicable, so as to prevent inadmissible evidence from being suggested to the jury by any means, such as making statements or offers of proof or asking questions in the hearing of the jury.

(d) Review of errors where justice requires. - Notwithstanding the requirements of subdivision (a) of this rule, an appellate court may review errors affecting substantial rights if it determines, in the interest of justice, it is appropriate to do so.