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Main / Optical interfaces / PORC-7227
PORC-7227 series HD/SD SDIembedded optical receivers with synchronizer and 4-channel audio support |
PROFLEX™ PORC-7227 series optical receivers convert an optical signal into electrical, suport SDIembedded synchronization to the REF. The optical input of PORC-7227 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 auxiliary HDMI output provides the bargraph audio level meter (quazi-peak and UV) OSD.
PORC-7227 module occupies one slot in the PROLFEX 1U/3U racks.
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
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 |
General description
PORC-7227 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-7227 simplified schematic.
PORC-7227 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
- VU METR - the VU-meter controls (ON/OFF, scale type, placement on the screen)
- real-time input optical power monitoring
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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