1. Whakarāpopototanga Hua
Ko te SR812S to tatou kaikawe whakawhiti whatu whatunga CATV me te transponder whakahaere whatunga. Ko te mua-amp ka tango i nga GaAs MMIC whakakaha katoa me te pou-amp ka tango i te mana GaAs mana rua whakahiato kōwae. Ko te hoahoa ara iahiko kua pai ake, me o maatau tau nga wheako hoahoa RF ngaio, ka eke nga taputapu ki te tohu tohu mahi teitei. He tauira pai mo te whatunga CATV.
2. Āhuahira
- Whakautu teitei PIN ngongo whakawhiti whakaahua hiko, hoahoa 1G bandwidth.
- Ko te whakaheke me te whakaōrite ka taea te whakarite tonu te momo pukumomo whakauru ranei.(Kōwhiringa)
- Putanga kairuarua mana, teitei te whiwhi me te iti o te korikori.
- Mana AGC Optical, ina he -7~+2dBm te awhe hiko whatu whakauru, karekau e rereke te taumata whakaputa.
- Ko te transponder whatunga whiriwhiri, tautoko i te punaha whakahaere whatunga NMS.
Tūemi | Waeine | Momo ahau | II Momo | III Momo | Ⅳ Momo |
Tawhā Optical | |||||
Te awhe AGC Optical | dBm | -7 ~ +2 | |||
Ngaronga Whakahoki Optical | dB | >45 | |||
Te Roonga Ngaru Whakawhiwhi Optical | nm | 1100 ~ 1600 | |||
Momo Tuhono Optical | FC/APC、SC/APC kua tohua e te kaiwhakamahi | ||||
Momo muka | Aratau Kotahi | ||||
Tawhā RF | |||||
Awhe auau | MHz | 45~862/1003 | |||
Papatahi i roto i te Band | dB | ±0.75 | |||
Nganganga Whakahoki Putanga | dB | ≥14 | |||
Taumata Putanga Whakatauria | dBμV | ≥102 | ≥102 | ≥104 | ≥108 |
Taumata Huaputa Max | dBμV | ≥102 | ≥102 | ≥104 | ≥118 |
EQ | dB | 0~15 ka taea te whakarite | Ko te whakauru EQ kua mau | ||
ATT | dB | 0~15 ka taea te whakarite | Ko te whakauru ATT kua mau | ||
C/N | dB | ≥ 51 | 84 hongere PAL-D tohu tairitenga-2dBm whiwhi mana whatutaumata putanga whakatau,8dBequalization | ||
C/CTB | dB | ≥ 65 | |||
C/CSO | dB | ≥ 60 | |||
Ahuatanga whanui | |||||
Ngaohiko hiko | V | AC(110~240)V, AC(35~90)V ranei | |||
Te aukati putanga | Ω | 75 | |||
Te pāmahana whakahaere | ℃ | -40~60 | |||
Kohi hiko | VA | ≤ 15 | |||
Ahu | mm | 185(L)╳ 140(W)╳ 91(H) |
SR812S Kaiwhiwhi Optical |
1. Whakauru muka Optical |
2. Waea OpticalFlange |
3. EQ taea te whakarite |
4. ATT taea te whakarite |
5. -20dB RF Test Port |
6. Paoa Putanga, Whakawehe ranei |
7. Putanga RF 1 |
8. Putanga RF 2 |
9. Whakauru hiko-whakauru 1 |
10. Whakauru hiko-whakauru 2 |
11. Atanga Mana Poari Matua |
12. Tohu Mana |
13. Tohu mana whatu |
14. AC60V me AC220V tahuriiwhakangao |
15. AC60V whakauru hiko |
16. Atanga Raraunga |
SR812S CATV Whatunga RF Optical Receiver me AGC Raraunga Raraunga.pdf