Product Manual
The 7736CEM line of component serial digital to composite analog video converters are broadcast quality encoders with an extensive list of additional features. An audio de-embedder with high quality audio digital to analog conversion can be packaged with the encoder to create a video/audio frame synchronizer/conversion package.
The 7736CEM product features various video processing functions such as VITC, closed captioning and SID extraction during the encoding process, as well as monitoring video for black and freeze conditions. The modules feature a clean (asynchronous) and a fast (synchronous) input video lock mode to handle upstream switches.
The audio is processed, to extract level information for creating and displaying level and phase bar graphs. In addition, the audio is analyzed for periods of high level, silence, mono, and out-of-phase conditions. All of this status information is displayed on the monitoring analog output via on-screen display (OSD) overlay.
VistaLINK® enables remote monitoring, control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage operations including signal monitoring and module configuration from SNMP - enabled control systems (Manager or NMS) locally or remotely.
Features
- One component serial digital input (525 or 625)
- One re-clocked component serial digital output
- EDH analysis on SDI input
- Four composite analog video outputs WITHOUT OSD text or audio bar graphs
- Internal processing to maintain 10-bit digital video quality
- 12-bit output video digital to analog conversion
- One monitoring quality video output with OSD text and bar graph graphics
- User-adjustable output video processing functions: black level (brightness), gain (contrast), hue, and saturation
- User-selectable luminance and chrominance filters for different applications (i.e. broadcast vs. studio)
- User-selectable horizontal blanking interval width: narrow, normal
- One composite analog reference input (NTSC or PAL-B) on BNC 75 watts or high-Z, jumper configurable input impedance
- One frame video synchronizer (with +S option)
- Infinitely variable output phase
- Freeze modes: black, freeze
- Input video lock mode: clean or fast
- Adjustable free running frequency
- Built-in color bar generator
- VU/PPM bar graph level Indicators
- Decodes vertical interval time code (VITC) and "burns" the time code into the picture
- Decodes PESA format Source ID (eight characters) or Evertz format VITC Source ID (five or nine characters) and burns the ID into the picture
- A comprehensive on-screen display is available to configure the various features of the module
- Flexible configuration of the text and audio bar graph information displays
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- An extensive list of error conditions can be monitored and fault conditions can be configured from these conditions
- On-screen messages can be triggered by the configured fault conditions
- VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, CP-2116E or CP-2232E Control Panels. VistaLINK® is available when modules are used with the 3RU 7800FR frame and a 7800FC VistaLINK® Frame Controller module in slot 1 of the frame
- Features of "-A4" version are:
- One group (4 channels) of synchronous 20-bit audio is de-multiplexed from the incoming digital video
- Two unbalanced AES audio inputs (up to 48kHz, 24 bits) on BNC terminal strip
- User selects either the de-embedded audio or the input AES audio
- The selected audio is delayed equivalently to the video delay with the +S option
- Four high quality 24-bit audio channels are output (analog) as balanced on 2 removable barrier strips
- Low impedance outputs (66Ω)
- Analog audio output levels are adjustable
- Additional audio delay of up to five seconds
- Additional audio advance of up to one frame, depending on video delay
- Loss of video modes: pass audio, mute audio
- Optional balanced AES audio inputs (+B option)
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Block Diagram
Specifications
| Serial Video Input |
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| Standard | SMPTE ST 259-C -525 or 625 line component |
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| Number of Inputs | 1 |
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| Number of Reclocked Inputs | 1 |
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| Connector | BNC per IEC 60169-8 Amendment 2 |
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| Signal Level | 800mV nominal |
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| DC Offset | 0V ±0.5V |
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| Rise And Fall Time | 900ps nominal |
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| Overshoot | < 10% of amplitude |
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| Return Loss | > 15dB to 270MHz |
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| Embedded Audio | SMPTE 272M-A |
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| Frequency Lock Range | ±75ppm from nominal |
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| Lock up time on a hot switch | None or 7 frames (based on lock mode) |
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| Analog Broadcast Video Output |
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| Standard | NTSC, SMPTE 170M PAL, ITU624-4 |
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| Number of Inputs | 4 |
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| Connector | BNC per IEC 60169-8 Amendment 2 |
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| Signal Level | 1V nominal |
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| Output Impedance | 75Ω |
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| DC Offset | 0V ±50mV |
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| Return Loss | > 35dB to 10MHz |
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| Frequency Response | 0.1dB to 4MHz (response will depend on selected filtering) |
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| Differential Phase | < 0.5°(< 0.3°typical) |
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| Differential Gain | < 0.5% (< 0.3% typical) |
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| SNR | > 75dB (black video, 100kHz to 5MHz) |
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| Output level control range | ±10% |
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| Black level control range | ±7.5 IRE |
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| Chroma level control range | ±10% |
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| Hue Control Range | ±15°(NTSC only) |
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| Minimum Delay | 3ms |
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| Maximum Delay | 1 frame +3ms (+S option only) |
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| Reference Video Input |
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| Standard | NTSC, SMPTE 170M PAL, ITU624-4 |
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| Number of Inputs | 1 |
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| Connector | BNC per IEC 60169-8 Amendment 2 |
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| Signal Level | 1V nominal (0.5V to 1.5V) |
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| Frequency Lock Range | ±75ppm from nominal |
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| Input Impedance | 75Ω or High impedance (jumper selectable) |
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| Return Loss | > 25dB to 10MHz |
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| Max Subcarrier Jitter | < 3° |
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| Free-Running Frequency Control Range | > ±10ppm (> ±270Hz) |
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| Analog Monitoring Video Output |
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| Standard | NTSC, SMPTE 170M PAL, ITU624-4 |
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| Number of Outputs | 1 |
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| Connector | BNC per IEC 60169-8 Amendment 2 |
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| Signal Level | 1V nominal |
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| Output Impedance | 75Ω |
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| Return Loss | > 35dB to 10MHz |
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| Analog Audio Outputs-A4 version only |
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| Number of Outputs | 4 |
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| Type | Balanced analog audio |
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| Connector | Two 6-pin removable terminal strips |
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| Output Impedance | 66Ω balanced |
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| Sampling Frequency | 48kHz |
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| Signal Level | 0dBFS a 12 to 25dBu (user-settable) |
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| Frequency Response | < ±0.05dB (20Hz to 20kHz) |
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| Dynamic Range | 24 bits when AES inputs selected, 20 bits when embedded audio selected |
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| THD+N | < 0.001% (> 100dB) @ 1kHz, -1dBFS |
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| Crosstalk | < -105dB (20Hz to 20kHz) |
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| DC Offset | < ±30mV |
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| SNR | > 110dB "A" Weighting |
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| Inter-Channel Phase Error | < ±1°(20Hz to 20kHz) |
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| Unbalanced AES Audio Inputs-A4 version only |
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| Number of Inputs | 2 |
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| Input Standard | SMPTE 276M, single ended synchronous or asynchronous PCM AES |
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| Connector | BNC per IEC 60169-8 Amendment 2 |
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| Resolution | 24 bits when AES inputs selected, 20 bits when embedded audio is selected |
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| Input Sampling Rate | 32kHz to 48kHz when AES inputs selected, Synchronous 48kHz when embedded audio is selected |
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| Minimum I/O Delay | 3.5ms |
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| Balanced AES Audio Inputs+B option |
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| Number of Inputs | 2 |
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| Input Standard | AES3-1992, balanced synchronous or asynchronous PCM AES |
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| Connectors | One 6-pin removable terminal strip |
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| Impedance | 110Ω |
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| Resolution | Up to 24 bits |
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| Sampling Rate | 32kHz to 48kHz |
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| Input Level | 2V to 7V p-p |
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| Minimum I/O Delay | 3.5ms |
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| Electrical |
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| Voltage | +12V DC |
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| Power | 9.25 watts CEM +16.75 watts (-A4 or +B option) |
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| EMI/RFI | Complies with FCC Part 15, Class A
EU EMC Directive |
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| Physical |
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| Number of Slots | 2 |
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