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NF8 AF Access Terminal
The NF8 access terminal provides simultaneous transmission of speech and signalling, teleinformation and teleprotection signals in the frequency ranges from 300Hz to 3720Hz. The NF8 terminal offers technically and economically the most efficient use of available bandwidth.
Main features
- Fully programmable utilization of analog channels on different transmission media
- Time sharing of the AF bandwidth in case of parallel operation with teleprotection equipment on the same channel
- Programmable universal telephone interface
- Programmable transit filters
- Line equalizer
- Equipment setting and monitoring through built in MMI console or personal computer
- Simple integration into the ET8 PLC equipment
- Meets IEC 60495 recommendations
Technical data
Channel utilization versions
| Channel version | Speech/Hz | Signalling-FO/Hz | TI channel/Hz |
| 2K0 | 300-2000 | 2100 | 2200-3720 |
| 2K2 | 300-2200 | 2310 | 2420-3720 |
| 2K4 | 300-2400 | 2520 | 2640-3720 |
| 2K4s | 300-2400 | 2550 | 2700-3720 |
| 3K4 | 300-3400 | 3600 | / |
| 3K4s | 300-3480 | 3600 | / |
| TI | / | / | / |
Applications
- Multipurpose use of analog channels on transmission lines
- Last mile access: analog interface of dislocated user
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