TABLE I-Continued SECONDS TO DECIMAL PARTS OF A DEGREE (10) General design, construction, and operation shall be in accordance with good engineering practice. (c) Tests to be made for approval of television broadcast aural modulation monitors. The manufacturer of a monitor shall submit data on the following at the time of requesting approval: (1) Audio frequency response of the monitor from 50 to 15,000 cycles in db from the response at 400 cycles. (2) Distortion in the response. (3) Input signal power required. (4) Permissible tolerance on input signal power to keep the meter reading correct within 5 percent units. (5) Ballistic characteristics of the monitor indicator. (d) Various other tests may be made or required depending on the character of the apparatus. (e) Tests shall be conducted in such a manner as to approximate actual operating conditions as nearly as possible. The equipment shall be tested on the highest channel for which it is designed. 1. TABLE I MINUTES TO DECIMAL PARTS OF A DEGREE Degrees Statute miles Middle latitude Statute miles |