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Main / Optical interfaces / PORC-7228
PORC-7228 AA/AE/EE series optical receivers with analog/AES audio output and unidirectional RS-232 data support |
PROFLEX™ PORC-7228 series optical receivers convert an optical signal into electrical, suport SDIembedded synchronization to the REF. The optical input of PORC-7228 is based on the hot-swappable SFP module with the RX power monitoring facility.
An audio delay follows video, the SD and HD signal may be used as the REF for synchronization.
The analog/EAS audio output provide the deembedded audio signals.
The auxiliary HDMI output provides the bargraph audio level meter (quazi-peak and UV) OSD.
PORC-7228 module occupies two slots in the PROLFEX 1U/3U racks.
PORC-7228(A)-4 optical receivers are intended to pair with the POTM-7205-4 (if RS-232 communication is nesessary) or any other HD/SD SDI compatible optical transmitters.
Features:
- HD/SD SDI compliance
- electrical and HDMI outputs are available simultaneously
- automatic cable equalizer on SDI input
- built-in 1kHz test generator
- built-in color bar generator
- signal loss indicator
- EDH/CRC status indicators
- built-in sync gen lock status indication
- manual timing adjustment within the ±99 TV lines range
- automatic detection and indication of an embedded audio in the input SDI signal
- audio delay follows video
- audio channel remapping
- presettable audio gain
- bargraph audio level meter (quazi-peak and UV) OSD on HDMI monitor output
- hot-swappable SFP module providing the real-time diagnostic information about RX power
- compatibility with a single-signal, WDM and CWDM optical systems
- APD modification available
- RS-232 up to 150kbps stream extraction
- analog, AES/EBU or combination of both standards for audio output signals
- 24 bits DAC
Technical specifications
- Inputs
- optical
| Standard compliance |
SMPTE 292M (HD SDI) |
50i/1920*1080(2640*1125), 1080i/50 |
60i/1920*1080(2200*1125), 1080i/60 |
25p/1920*1080(2640*1125), 1080p/25 |
30p/1920*1080(2200*1125), 1080p/30 |
50p/1280*720(1980*750), 720p/50 |
60p/1280*720(1650*750), 720p/60 |
| SMPTE 259M (SD SDI) |
50i/720*576, 625i/50 |
60i/720*480, 525i/60 |
| input connector |
SFP/LC |
| optical sensitivity band |
1100~1650nm |
| maximum detectable optical input power |
-3dBm (-9dBm for APD modification) |
| Input sensitivity |
HD SDI |
-23dBm |
| SD SDI |
-26dBm |
HD SDI,
APD modification |
-30dBm |
SD SDI,
APD modification |
-32dBm |
- REF
| input type |
AC-coupled |
| connector type |
BNC |
| signal type |
for HD SDI |
tri-level |
| for SD SDI |
composite black-burst, 1V p-p |
| input impedance |
more than 10kOhm |
- Outputs
- SDI
| connector type |
BNC |
| number of outputs |
two, reclocked |
| return loss |
better than 12dB at 1.5GHz |
| SDI signal rise and fall times |
270ps (HD SDI), 700ps (SD SDI) |
| jitter |
less than 0.2UI |
| H-timing adjustment |
advance/delay within half TV line with 37ns (SD SDI) or 13,8ns (HD SDI) increments |
| V-timing adjustment |
advance/delay within 99 TV lines with one TV line increments |
| audio gain presets |
±6dB with 0.2dB steps |
- HDMI with audio level bargraph OSD
| standard compliance |
as per input signal standard |
| connector type |
miniHDMI |
- Audio
- analog
| output type |
balanced |
| output impedance |
less than 50 Ohm |
| connector type |
DB-15 |
| 0dB FS maximum output level |
+18dB |
| audio gain adjustments |
±6dB in 0.2dB increments |
| dynamic range |
100dB |
| THD and noise |
less than 0.006% |
| DAC |
24 bits |
| sampling rate |
48kHz, genlocked to video |
- AES/EBU
| output type |
transformer balanced |
| connector type |
DB-15 |
| audio gain adjustments |
±6dB in 0.2dB increments |
| signal amplitude |
3V at 110 Ohm |
General description
PORC-7228 accepts the optical signal on it's SFP RX module, which demodulates the input signal down to HD/SD SDI electrical form. SDI is decoded into a 10-bits 4:2:2 stream which is processed by a video/audio processor. The video/audio processor deembedds the audio and synchronizes the streams to the external REF. The HD/SD SDI video is available on two reclocked outputs.
PORC-7228 simplified schematic.
PORC-7228 rear panel view
Controls and indicators
The MODE button toggles through all the modes, the UP and DOWN buttons edit them.
- INP - input signal format selection
- BARS - built-in color bar generator ON/OFF
- ASSIGN A/B GROUP/CH - audio channel outputs mapping (selects a group and a channel to be reembedded into a new output group's channels 1 and 2)
- GAIN A/B - the audio gain presets in a selected stereo pair or AES signal
- TON - the built-in 1kHz test tone generator ON/OFF
- OUT GROUP - a group number select/disable for a remapped audio
- H/V TIMING - the timing within a TV line/frame relative to the REF signal
Status indicators:
- EDH/CRC MIN/HOUR - lit if two or more EDH/CRC errors were detected within one hour/minute interval. Both LEDs flash if there is no input video.
- REF UNLOCK - lit if:
- no REF input signal present
- the built-in sync-gen is not locked to the input REF signal
- the input REF signal is not of the same standard as an input HD/SD SDI
- LOSS - lit when SDI input is lost
- BARS - lit when the color bars are being inserted
Remote control from a PC
All “PROFLEX”-family devices are capable of a remote control from a PC via a PROFITT's proprietaty software packege. An optional CPU module installed in a PROFLEX rack provides the RS-232/RS-485/Ethernet connectivity.
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