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Main / SDI embedders and deembedders / PEMB-7108
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PEMB-3108 SDI audio embedders
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PROFLEX™ PEMB-3108 series SD SDI embedders accept up to four audio channels to embed into the SD SDI stream.
The PEMB-3108 module occupies one slot in the PROLFEX 1U/3U racks so that up to four embedders fit into a 1U rack and up to fifteen into a 3U rack.
The input and output audio signal may be in any standard: an analog, AES or combination of both. These modificatiuons are designated the following model indexes:
- four analog balanced inputs (24-bits ADC) – the "AA" index, (f.e. PEMB-3108-4AA)
- two analog balanced inputs and one balanced AES/EBU input (4 channels in total) – the "AE" index, (f.e. PEMB-3108-4AE)
- two balanced AES/EBU inputs (4 channels) – the "EE" index, (f.e. PEMB-3108-4EE)
The PEMB-3108 embedders are featuring the monitoring PAL output with the OSD of the bar-graph audio level meters (quasi-peak and VU).
PEMB-3108 rear panel:
PEMB-3108 simplified schematic diagram:
PEMB-3108 accepts SD SDI input signals. SDI input is equalized, decoded into a 10-bits 4:2:2 stream which is processed by a video/audio processor.
The video/audio processor embedds the audio data streams. Input audio may be an analog ("AA" model index), digital AES/EBU ("EE" model index) or combination of both formats ("AE" model index).
Features:
- 24-bits audio ADC, 48kHz genlocked to video
- optional capabilities of synchronization, logo insertion and noise reduction
- low THD (better than 0.006%) and high dynamic range (100dB)
- jumper-presettable audio headroom (+18dB or +24dB)
- independent per channel polarity settings
- audio group selection for embedding
- audio channel (re)mapping
- LEFT-RIGHT channel swap capability
- built-in 1kHz test generator
- bargraph audio level meter (quazi-peak and UV) OSD on PAL monitor output
- automatic detection and indication of an embedded audio in input SDI signal
- audio group and ancillary data stripping/editing capability
- automatic cable equalizer on SDI input
- signal loss indicator
- EDH status indicators
- compatibility with a single-signal, WDM and CWDM optical systems
- an analog, AES/EBU or combination of audio inputs
Technical specifications
- Inputs
- SDI
| Standard compliance |
ITU-R BT.656 |
| Input impedance, connector |
75 Ohm, BNC |
| Automatic cable equalization |
up to 300m (8281or similar) |
- Analog AUDIO
| Connector |
DB-15 |
| Input impedance |
10 kOhm |
| Input type |
balanced |
| 0 dB FS level |
+18dB (+24dB jumper-selectable) |
| Dynamic range |
better than 100dB |
| ADC |
24-bits at 48kHz (20 MSB are embedded) |
| Harmonic distortions and noise |
less than 0,006% |
- AES/EBU
| Input type |
transformer balanced |
| Connector type |
DB-15 |
| Amplitude |
0.2~4.0V |
| Input impedance |
110 Ohm |
| Maximum input cable length |
up to 100 m of twisted pair |
- Outputs
- SDI
| Standard compliance |
ITU-R BT.656 |
| output impedance, connector |
75 Ohm, BNC |
| number of outputs |
two |
| return loss |
better than 18dB at 270MHz |
| amplitude |
800mV±10% |
| jitter |
less than 500ps |
- PAL monitor
| output impedance, connector |
75 Ohm, BNC |
| amplitude |
1000mV±2% at 75 Ohm |
| DAC |
10 bits |
| frequency response ripple |
less than 3dB up to 5.5MHz |
| color error |
less than 3% |
PEMB-3108 controls and indicators:
The MODE button toggles through all the modes, the UP button edits them. The CH.SEL ???????????????
- GROUP SEL - the audio group selection for the embedding
- ASSIGN - audio channel mapping
- POLAR INVERS - the polarity invertion in a selected stereo pair or AES signal
- SWAP - left-right swap in a selected stereo pair or AES signal
- TON - the built-in 1kHz test tone generator ON/OFF
- VU METR - the VU-meter controls (ON/OFF, scale type, placement on the screen)
- ANC STRIP - ancillary data stripping ON/OFF
- AUD DET - lit when an input SDI has the embedded audio
- EDH MIN/HOUR - lit if two or more EDH errors were detected within one hour/minute interval
- AES LOSS - lit when AES inputs are selected but at least one of them has no input signal
The remote control and management from a PC
All the PROFLEX™ modules are remote controllable from a PC. This facility is available if a rack is fitted with a CPU module (ordered separately).
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