DAR-6200T
MF R-Mode Exciter
The MF R-Mode Exciter is a device that receives a reference timing data from a reference timing generator, generates an MF R-Mode signal that combines an MSK signal and two CW signals, measures the quality of the output signal, and controls the generated CW signal to be synchronized to the reference time through TOT control.
Function
Signal generating
- Generating two independent CW signals with frequency setting, phase and output level control
- Generating MSK signal and two CW signals synchronized to externally provided UTC timing
Signal Measurement
- Quality Measurement Based on SAE9990 Specification
- First Pulse and 8 Pulse Quality Measurement in Group A/B
- Measuring Transmission Signal Quality(Spectrum, MSK MER, CW C/N, CW vs 1PPS)
RTCM
- Standard RTCM message transmission
- RTCM transmission rate control
- Decoding and Encoding of Received RTCM Messages
- Standard MSK demodulation function for decoding RTCM message
TOT Control
- Automatic TOT control
Specs
| Performance | |
| MSK Signal Frequency control | 283.5kHz ~325kHz @1Hz Step |
| RTCM Bit Rate setting | 50/100/200bps |
| MSK Signal Timing control | 1ns Step based on MSK phase |
| CW1/2 Signal Frequency control | 283.25kHz ~325.25kHz @1Hz Step |
| CW1/2 Signal Timing control | 1ns Step based on CW phase |
| Amplitude Control | 0~100%, 1% Step |
| MSK Bit timing uncertainty | <1ns @ MSK Phase vs. 1PPS |
| CW1/2 Signal timing uncertainty | <1ns @CW Phase vs. 1PPS |
| Phase estimator uncertainty | <1ns @CW Phase vs. 1PPS(when CNR>45) |
| Manual mode | 2ns Step(uncertainty <1ns) |
| Auto mode lock range | 2ns ~20ns |
| Input Signal | 1PPS, 10MHz, MF R-Mode Feedback signal |
| Output Signal | MF R-Mode signal |
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