Specifications Specifications describe the instrument’s warranted performance over the tem- perature range of 0 °C to 40 °C (except as noted). Supplemental performance characteristics are intended to provide information that is useful in applying the instrument by given non-warranted performance parameters. These are denoted as SPC (supplemental performance characteristics), typical, or nomi- nal. Warm-up time must be greater than or equal to 30 minutes after power on for all specifications.