| Type: | Transmitter |
|---|---|
| Function: | Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment |
| Certification: | CE, ISO, GS |
| Condition: | New |
| Frequency: | UHF/VHF |
| Output Power: | 1000W |
| Customization: |
|---|
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| No. | Item | Specifications |
| 1 | working frequency | Comply with relevant regulations of GB/T 14433-1993. |
| 2 | Single frequency network mode frequency adjustment step size | 1Hz |
| 3 | Frequency stability (3 months) | When using an internal reference source, the frequency stability is ≤ 110-7; When using an external reference source, the frequency stability is ≤ 110-10. |
| 4 | Frequency accuracy | For MFN mode, frequency accuracy ≤ ± 100Hz; For SFN mode, frequency accuracy is ≤ ± 1Hz. |
| 5 | Local oscillator phase noise | Specific indicators can be found in 2) Local oscillator phase noise (Table 2 Transmitter Phase Noise Index) |
| 6 | RF output power stability | ≤±0.5dB |
| 7 | Reflection loss of output load (within 8MHz band) | Normal operation: ≥ 26dB; Permissible working: ≥ 20dB. |
| 8 | Shoulder (measured before the filter at ± 4.2MHz off center frequency) | ≤-36dB |
| 9 | In-band unevenness (fc ± 3.591MHz) |
Within ± 0.5dB (non dual pilot mode) |
| 10 | Out of band spectral characteristics | Comply with the relevant regulations on out of band spectrum templates in GB20600-2006. |
| 11 | Modulation Error Rate (MER) | ≥32dB |
| 12 | Transmitting power within adjacent channels | The ratio of transmission power in adjacent channels to in band transmission power≤-45dB, satisfy the transmission power within adjacent channels≤13mW. |
| 13 | Transmission power outside adjacent frequency channels | The ratio of the transmission power outside the adjacent channel to the in band transmission power is ≤ -60dB, or the transmission power outside the adjacent channel is ≤ 13mW. |
| 14 | Overall efficiency | ≥35% |
| 15 | Overall energy consumption | <3KW |
| Note: Items 10, 12, and 13 should be measured after the filter, while the rest should be measured before the filter. | ||
| No. | Offset center frequency (Hz) | Local oscillator phase noise (dBc/Hz) |
| 1 | 10 | < -60 |
| 2 | 100 | <-75 |
| 3 | 1k | < -85 |
| 4 | 10k | < -95 |
| 5 | 100k | < -110 |
| 6 | 1M | < -115 |
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