1065.202—Data updating, recording, and control.
Your test system must be able to update data, record data and control systems related to operator demand, the dynamometer, sampling equipment, and measurement instruments. Use data acquisition and control systems that can record at the specified minimum frequencies, as follows:
| Applicable test protocol section | Measured values | Minimum command and control frequency | Minimum recording frequency |
|---|---|---|---|
| § 1065.510 | Speed and torque during an engine step-map | 1 Hz | 1 mean value per step. |
| § 1065.510 | Speed and torque during an engine sweep-map | 5 Hz | 1 Hz means. |
| § 1065.514 , § 1065.530 | Transient duty cycle reference and feedback speeds and torques | 5 Hz | 1 Hz means. |
| § 1065.514 , § 1065.530 | Steady-state and ramped-modal duty cycle reference and feedback speeds and torques | 1 Hz | 1 Hz. |
| § 1065.520 , § 1065.530 , § 1065.550 | Continuous concentrations of raw or dilute analyzers | N/A | 1 Hz. |
| § 1065.520 , § 1065.530 , § 1065.550 | Batch concentrations of raw or dilute analyzers | N/A | 1 mean value per test interval. |
| § 1065.530 , § 1065.545 | Diluted exhaust flow rate from a CVS with a heat exchanger upstream of the flow measurement | N/A | 1 Hz. |
| § 1065.530 , § 1065.545 | Diluted exhaust flow rate from a CVS without a heat exchanger upstream of the flow measurement | 5 Hz | 1 Hz means. |
| § 1065.530 , § 1065.545 | Intake-air or raw-exhaust flow rate | N/A | 1 Hz means. |
| § 1065.530 , § 1065.545 | Dilution air if actively controlled | 5 Hz | 1 Hz means. |
| § 1065.530 | Sample flow from a CVS that has a heat exchanger | 1 Hz | 1 Hz. |
| § 1065.530 , § 1065.545 | Sample flow from a CVS does not have a heat exchanger | 5 Hz | 1 Hz mean. |