4461A SDI analog audio embedder
Features
- Inserts two balanced analog audio stereo pairs into any group
- High quality 24 bit audio ADC
- Replaces or adds to existing audio
- Digital silence inserted if audio feed is absent
- Selectable 20 or 24 bit embedding
- LEDs show group status and input signal presence
- Automatic equalization up to 350m
- EDH can be generated and inserted
- Auto sensing 525/625 operation
- Audio group select
- 20/24 bit embedding
- Append or overwrite audio
The 4461A SDI analog audio embedder embeds two balanced stereo audio pairs into the ancillary data space of a 270Mb/s SDI stream. The analog input is sampled at 24 bits and can be embedded as 20 or 24 bit audio. Embedding conforms to SMPTE 272M and allows audio to be inserted into any of the four groups. Existing audio groups can be added to or completely removed. Digital silence is inserted when an audio feed is absent. There is automatic input cable equalization and a re-clocked SDI output.
The unit is housed in an extremely compact and rugged aluminum case and is suitable for both field and studio applications.
Specifications
| SDI input | Analog input |
||
Standards |
SMPTE 259M 270Mb/s 525/625 SDI |
Standard |
Balanced analog audio |
| Connector | 75ohm BNC | Number | 2 stereo pairs |
| Signal level | 800mV p-p ±10% (terminated) | Impedance | 20K ohm |
| Return loss | >15dB 5-270MHz | Input level | Max 0dBFS=+26dBu/ Min 0dBFS=+12dBu |
| Cable equalization | >350m automatic (Belden 8281) | Quantization | 24 bit ADC |
| SDI output |
Connector | Removable screw terminals | |
| Standards | SMPTE 259M 270Mb/s 525/625 SDI | Power | |
| Connector | 75ohm BNC | Voltage |
6-12V DC |
Signal level |
800mV p-p ±10% (terminated) |
Current |
470mA @ 6V |
| DC offset | ±100mV | Power connector | Locking 2.5mm jack connector |
| Return loss | >18dB to 270MHz | Other | |
Audio embedding |
LEDs |
Show group status and signal presence | |
| Standards | SMPTE 272M | Temperature range | 0ºC to 45ºC |
| Embedding | 20 or 24 bits | Dimensions | 3¼ x 2½ x 1¼ |
.. |
Weight |
9 oz | |
Ordering Information
Preliminary data sheet. We reserve the right to change technical specifications without prior notice.
The ISIS Group, Inc.
119 E. McKnight Way, Unit A
Grass Valley, CA 95949
USA
Phone: 530-477-2984 Fax: 530-477-2986
119 E. McKnight Way, Unit A
Grass Valley, CA 95949
USA
Phone: 530-477-2984 Fax: 530-477-2986
Internet: www.isis-group.com
Email: ldole@isis-group.com
11-08