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ClockWatch Radio Sync
with
TrueTime TL-3 Receiver
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TrueTime TL-3 Receiver |
TrueTime TL-3 is an full
featured WWV receiver widely used for time synchronization. The TrueTime
receives time signals from shortwave (5-15 MHz) broadcast. The TL-3 is fully
supported in Radio Sync. The computer running
Radio Sync connects to the TL-3 receiver through the serial port and and
communicates using the receiver's native Mode-C protocol. The Radio
Sync software can then get the time from the NIST with millisecond
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Major Features of the TL-3
- Time information includes Year, Month, Day, Hour,
Minute, Second. Automatic Daylight Saving and Leap Second Mode
- Three Separate Receivers Receiving Simultaneously.
Receivers have an audio monitor
- Battery Backup and 24 Hour "Supercap" Capacitor Backup
- RS-232 Interface and Standard IRIG-B AM Output
- Custom LCD Display
- External indoor ferrite or outdoor
dipole antenna.
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TrueTime TL-3 Specifications
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On-board Receivers
- Three separate WWV receivers: 5, 10 and 15 MHz Simultaneous data processing
- Type: AM, Single Conversion Synchronous Detector
- Antenna Input: 50 ohm, BNC female, 11 VDC on Coax Center to Power an Active
Antenna.
- Digital Signal Processing
- Internal Frequency (IF): 455 KHz
- Sensitivity: Audible at less than 0.5 uV input.
- Power: 12 VDC @400 ma via AC adapter
Performance
- Time Accuracy; within +/- 5 msec of Coordinated
Universal Time (UTC) when receiving the National Institute of Standards and
Technology (NIST) WWV/WWVH radio signals.
- Lock On Time:5 minutes typical, under normal signal conditions. 2 minutes
maximum with strong signals present.
- Free-Running Stability: 20 ppm typical, 30 ppmworse case.
- Power Loss Backup: 24 hours CMOS clock backup with an 0.1 farad "supercap". Up
to 10 years CMOS clock backup with a 3 V lithium button cell battery.
Antenna
Either-
- AD-3 Dipole Antenna with 50 ft. RG-58 Coax and mounting bracket
or-
- AF-3 Active Ferrite Antenna with 6' RG-58 Coax
Display Indicators
- Time: HH:MM:SS AM, PM
- Month, Day, Year; MM DD YY
- Day of Week: SUN, MON, TUE, WED, THU, FRI, SAT
- Julian Date: DDD
- Receiver frequency: 5 MHz, 10 MHz, 15MHz
- UTC
- Daylight Saving Time indicator
- Signal Strength
- Time Zone
- Propagation Delay
- Time Format
- Last Update
- Pulse Output
- Mode C
Interface
- Liquid Crystal Display (LCD)
- RS-232 Communication Parameters: 300,600,1200, 2400,9600 Baud, selectable
parity, word length and stop bits. Connects to a PC running Radio Sync at 9600
baud through the computer's native serial port (COM1-7)
- IRIG B (Amplitude Modulated)
- 1 PPS (One Pulse Per Second)
- 1 PPD (One Plulse Per Day)
- Audio Monitoring
Mechanical
- Dimensions: 8.5W x 4.4 "Dx2"H
- Desk or Wall Mount
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