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Main / Optical interfaces / POTM-7201SFP
| POTM-7201SFP(CW) series HDSDI/SDI/ASI optical transmitters |
PROFLEX™ POTM-7201SFP(CW) series HDSDI/SDI/ASI optical transmitters support the 1.5Gbps data throughput.
A hot-swappable SFP module allows to change lasers easily, provides the diagnostic information about TX power and wavelength.
The POTM-7201SFP module occupies one slot in the PROLFEX 1U/3U racks so that up to four transmitters fit into a 1U rack and up to seventeen into a 3U rack.
The POTM-7201SFP transmitter is intended to pair with the PORC-7221 series receiver.
Features
- autodetection of input signal standard with manual override facility
- EDH status indication (min/hour) and signal loss indication
- automatic cable equalisation and reclocking
- two BNC outputs with reclocked/restored input signal
- PAL/NTSC monitor output for SDI input signal
- hot-swappable SFP module providing the diagnostic information about TX power and wavelength
- CWDM system compatibility
POTM-7201SFP laser wavelengths:
- a single-signal system: 1310±20nm (POTM-7201SFP) or 1550±20nm by request (POTM-7201SFP/1550);
- WDM system: 1310±20nm (POTM-7201SFP) and 1550±20nm (POTM-7201SFP/1550);
- CWDM system: the 1270~1610nm band with 20nm steps, (modification indexes: POTM-7201SFPCW##, where ## – the laser wavelength; for example, POTM-7201SFPCW1530)
POTM-7201SFP transmitters pair with PORC-7221 series receivers which are WDM/CWDM/single-signal system compatible.
Technical specifications
- Input
- Electrical
| Standards |
SMPTE292M(HDSDI), SMPTE259M A,B,C,D,(SD SDI), DVB/ASI |
| Number of inputs |
one, with the reclocking |
| Input impedance |
75 Ohm |
| Return loss |
better than 14dB at 1.485GHz |
| Cable equalization |
automatic, (up to 75m for HD SDI(1.485Gb/s), 300m for SDI (270Mb/s) Belden1694A or similar) |
| Connector type |
BNC |
- Output
- Output (digital, electrical)
| Standard |
as per input |
| Number of outputs |
two, reclocked |
| Return loss |
better than 12dB at 1.5GHz |
| Amplitude |
800mV±10% |
| Connector type |
BNC |
| Signal rise/fall time |
270ps for HD SDI, 700ps for SDI |
| Jitter |
less than 0.2UI |
- Output (PAL/NTSC analog, for SD SDI input)
| Number of outputs |
one |
| Output impedance |
75 Ohm |
| Amplitude |
1000mV at 75Ohm |
| Phase/amplitude error |
less than 3% |
| Frequency response |
less than 2% at 5.5MHz |
| Connector type |
BNC |
- Optical
| Number of outputs |
one |
| Connector type |
LC/PC, single-mode fiber |
| Laser wavelength |
1310±20nm (1550±20nm by request), FP laser |
| CWDM wavelengths |
1270~1370nm, 1430~1610nm with 20nm steps, DFB laser |
| Optical output power |
0dBm |
General description
POTM-7201SFP simplified schematic:
The optical transmitter POTM-7201SFP accepts the SDI/ASI input signal, provides an automatic cable equalization and reclocking. The restored signal is optically output (via a laser), a copy of the signal is provided at an electrical output and simultaneously processed to detect the standard, EDH status for SDI or CRC for HD SDI, to decode it. In case of an SDI signal - it is provided at the monitor output in PAL/NTSC format.
POTM-7201SFP rear panel:
Controls and indicators
All the controls and indicators are located at the module's frontal board:
Modes of operation:
- INP MODE – input signal standard automatic/manual selection
- TX POWER – display of the laser TX optical power
- λ nm – display of the laser TX optical wavelength
Indicators:
- LOSS – lit when no input signal is detected
- EDH DET – lit when an SDI signal with the EDH is present
- EDH MIN/HOUR – lit when two or more EDH errors were detected within one hour/one minute interval
- INPUT STATUS - input signal standard indication:
- AUTO - autodetection mode is ON
- ASI - the ASI input signal is detected
- SDI - the SDI input signal is detected
Remote control from a PC
All “PROFLEX”-family devices are capable of a remote control from a PC via a PROFITT's proprietaty software package. An optional CPU module installed in a PROFLEX rack provides the RS-232/RS-485/Ethernet connectivity.
Application example
In case of a single-fiber usage, just connect it to the transmitter's output.
In case of the CWDM you should connect the transmitters' outputs to an optical MUX/DEMUX observing the wavelength markings.
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