Rationale

Revision Request #1: Make A1.3.4 (timing verification) optional. Justification: Timing verification is onerous and not necessary for modern computer-controlled equipment. Also, ASTM E92 (incorporated by reference) makes timing verification optional. Revision Request #2: Add text to Section A1 and Appendix X4 that also allows indirect verification by HV using test blocks made in accordance with ASTM E92.A4. Justification: Verification by HV would be persuasive to the user and might be easier for some manufactures. Jennifer Hay is willing to draft text for these changes.