DAR-6100T
TOT Control Unit
The TOT control unit receives the reference time information (IRIG-B, 10MHz, 1PPS) from the reference timing generation unit and generates the UTC-based GRI chain Timing.
This unit uses the automatic TOT control function that controls the frequency and phase of the output signal (5MHz Clock) based on the generated UTC GRI Timing to ensure that the time of the Loran-C signal transmitted from the transmitter is continuously synchronized with the UTC time.
This unit performs a signal quality measurement function based on the SAE9990 standard for the transmitted Loran-C signal.
Function
Signal Generation
- Generate a TOT controlled 5 MHz (sine wave) signal
Signal Measurement
- Quality measurement based on SAE9990 standard
- First Pulse and 8 Pulses quality measurement of Group A/B
- Measuring Transmission Signal Quality(ECD, SNR, Droop, PKI, PKP, Occupied Bandwidth, etc.)
TOT Control
- TOT control for UTC time synchronization of transmission signal
Specs
| Performance | |
| Loran-C signal SZC detection resolution | <2ns |
| TOT control performance | < 10ns |
| Input Signal | 1PPS, 10MHz, IRIG-B, Loran-C Feedback signal |
| Output Signal | 5MHz Sinewave |
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