HIGH QUALITY
Original system optimization control technology, RF predistortion technology to ensure excellent
performance in the case of CNR system to obtain the largest CTB, CSO and SBS indicators.
High quality | Original system optimization control technology, RF predistortion technology to ensure excellent performance in the case of CNR system to obtain the largest CTB, CSO and SBS indicators. |
Flexibility | Phase modulation technology of the external regulator to maximize the performance of the system CSO, to maximize the fiber into the optical power to obtain long-distance transmission, and SBS threshold 13,16,18 field adjustable , Can be applied to different network transmission. |
Reliability | 19 "1U standard rack, built-in high-performance dual switching power supply, can be 85 ∽2665ac city network voltage in the hot backup work, MS-level automatic switch; chassis cooling can be automatic temperature control. |
Intuitive | External modulator and laser is the most expensive device, the machine set up a microprocessor outside the tune. |
Network management | Option status monitoring transponder to ensure compliance with the national standard and compatible with the SCTE HMS standard, can achieve network management monitoring. |
Model | Item | Unit | Performance parameters | Remark |
1 | Laser model |
|
| See specifications |
2 | Light wavelength | nm | 1550±10 | If the deviation from the wavelength before ordering to specify |
3 | Light modulation |
| External |
|
4 | Light output power | dBm | 2*4 | Specifications have details |
5 | SBS threshold | dBm | 16.5 | 13,16,18 optional |
6 | Optical connector form |
| FC/APC,SC/APC optional | Please specify before ordering |
7 | Frequency Range | MHz | 47~(862)1000 |
|
8 | Carrier to noise ratio | dB | ≥52.0 | According to GY / T143-2000 6.2.3.5 |
9 | Flatness | dB | ±0.75 | According to GY / T143-2000 6.2.4 |
10 | RF input signal level | dBuV | 75~88 | AGC automatic control |
11 | Carrier combination third-order beat ratio (C/CTB) | dB | ≥65.0 | According to GY / T143-2000 6.2.5 |
12 | Carrier combination second-order beat ratio (C/CSO) | dB | ≥65.0 | According to GY / T143-2000 6.2.6 |
13 | RF input impedance | Ω | 75 |
|
14 | RF input reflection loss | dB | >16(47~550)MHz / >14(550~862)MHz | According to GB / T11381.1 |
15 | Powered by | V | 90~265 Electricity | 4.2.2.2.5 |
16 | Operating temperature | ℃ | 0~50 | Optional -48VDC |
17 | Laser line width | MHz | 0.3 |
|
18 | RF connector form | - | Metric F head |
|
19 | Test port accuracy | dB | -20±1 |
|
20 | Storage temperature | ℃ | -20~85 |
|
21 | Size | ″ | 19″×11″×1.75″ | (W) x (D) x (H) |
22 | Network management interface |
| RJ45 | Support for browsers and SNMP |
Note: 1) 59 PAL-D analog TV channel signals are arranged in the 550 MHz frequency range under the specified link loss conditions, the digital modulation signal is transmitted in the frequency range of 550 MHz to 750 (862) MHz, the level of the digital modulation signal 8MHz bandwidth) than the analog signal carrier level is 10dB lower, the optical receiver input light rate of 0dBm, the measurement carrier combination. 2) fiber 50KM + EDFA. |
MODULATOR
The purpose of an REmodulator is to ensure that the signal provided by the carrier can
travel from place to place.
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