1220. 2(c) 1220. 2(h) computer through an analog telephone line)
ͦ Upon detection of a fault condition for any of the above parameters, the HAR must send notifications to the TMC/RTMC using the following methods:
- To the Central Software Subsystem - By e-mail notification - By pager notification - By telephone notification (to landline or digital cellular telephones)
information directly from the National Weather Service (NWS). Include all seven selectable frequency bands, including split channels. Include a built -in speaker and headphone jack for monitoring weather information on site. Provide unit that works in conjunction with the digital recorder/player to automatically interrupt the current message being broadcast upon receipt of an emergency alert from the NWS. Provide Alert feature (on/off) as well as the feature to set the duration for broadcasting the alert that is selectable from within the digital recorder/player’s voice prompts. Provide weather receiver with the following characteristics:
• Frequency: seven selectable frequencies; selectable through a series of dip switches; Internal speaker and headphone jack.
• Sensitivity: Better than 0.2µV; S/N better than 12 dB
• Selectivity: ±10 KHz at - 6Db; ±20 KHz at - 70 Db
• Weather Alert: Detects 1050 Hz tone; LED & TTL outputs .
• Antenna: External 50Ω BNC connector
• Power Input: less than 0.4 A at 12 VDC
• Operating Temperature: -40F to +165F; Humidity 95% (non- condensing)
• TCP/IP capable
synchronize radio frequency signals broadcast by multiple HAR transmitter units. Provide unit to tune the operating frequency of the transmitter to a high precision using phase locking to timing signals received from GPS satellites. Display power, GPS reception quality, satellite lock, and HAR transmitter frequency lock indicators on the front panel display of the unit. Size GPS unit to fit in the rack or chassis included in the ITS enclosure specified in Section 1201.2(b). Provide fi eld hardened unit with ambient operating temperature range of - 40F to +165F.
Where no manufacturer recommendations exist, utilize Section 1101.11(j). Obtain Representative approval before installing grounding system.
manufacturer’s recommendations. Furnish minimum 30- foot pole height.
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