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The 7837CDM line of composite analog to serial digital converters are broadcast quality decoders with an extensive list of features. High quality analog audio A/D converters can be packaged with the decoder to create a video/audio frame synchronizer with audio embedding.
Within the 7837CDM series, adaptive 3D comb filtering technology is utilized to eliminate moving artifacts typically introduced during the decoding process. This makes the 7837CDM series ideal for use in applications where the signal is destined to enter compression systems. The 7837CDM series utilizes 12 bit video ADCs for superior precision and image quality.
The 7837CDM series is fully SNMP enabled when used in conjunction with a 7700FC frame controller card. With full SNMP capabilities, the 7837CDM series can also be controlled by any SNMP enabled Evertz control panel like the CP-2232E, amongst others. In addition to SNMP control, the 7837CDM series can be controlled locally used its internal On-Screen-Display capabilities.
特点
- One input analog video input
- One SMPTE ST 259-C video input
- 75Ω or Hi-Z input impedance (jumper configurable)
- Four SD-SDI outputs without OSD text
- One composite analog video output with OSD text for card control
- One composite analog reference input (NTSC or PAL-B) on BNC
- 75Ω or Hi-Z input impedance (jumper configurable) for REF IN
- Video frame synchronizer
- Infinitely variable output phase (27MHz clock increments)
- Freeze modes: black, freeze
- Comprehensive on screen display for module config
The Features of the Decoding Process
- 12 bit sampling of input analog video
- Advanced 3D adaptive video decoding
- Mode for support of non-time base corrected signals
- User configurable luma detail enhancement
- User selectable noise reduction
- Chroma AGC available, if desired
- User adjustable input video processing functions: black level, gain, hue, and saturation
The Features of "-A4" Option
- 4 balanced analog audio inputs (two stereo pair) on 7837CDM-A4
- High impedance inputs (user supplies termination resistors for other impedances)
- Analog audio levels are software selectable (separate controls for coarse/fine)
- Audio delay tracks video delay
- Additional audio delay up to 2.5s
- Audio advance of up to 1 frame
- 4 channels (one full group) of audio is multiplexed onto outgoing video
- 2 unbalanced AES audio outputs using BNC connectors
指标|
Analog Video Input | |
|---|---|
| 标准 | NTSC, SMPTE ST 170 PAL, ITU624-4 |
| 输入数量 | 1 |
| 端口数目 | BNC per IEC 61169-8 Annex A |
| 信号电平 | 1V nominal |
| Frequency Lock Range | ±50 ppm from nominal |
| Input Level Control Range | > ±4dB |
| Black Level Control Range | > ±5 IRE |
| Chroma Level Control Range | > ±20% |
| Hue Control Range | > ±20° (NTSC only) |
| Input Impedance | 75Ω or High impedance (jumper selectable) |
| 反射损失 | > 35dB to 5MHz |
串行视频输入 | |
|---|---|
| 标准 | SMPTE ST 259-C- 525 or 625 line |
| 输入数量 | 1 (non-reclocked) |
| 端口数目 | BNC per IEC 61169-8 Annex A |
| 反射损失 | > 15dB to 300MHz |
| Embedded Audio | SMPTE ST 272-A |
| Frequency Lock Range | ±50ppm from nominal |
Reference Video Input | |
|---|---|
| 标准 | NTSC, SMPTE ST 170 PAL, ITU624-4 |
| 输入数量 | 1 |
| 端口数目 | BNC per IEC 61169-8 Annex A |
| 信号电平 | 1V nominal |
| Frequency Lock Range | ±50ppm from nominal |
| Input Impedance | 75Ω or High impedance (jumper selectable) |
| 反射损失 | > 35dB to 5MHz |
Analog Monitoring Video Output | |
|---|---|
| 标准 | NTSC, SMPTE ST 170 PAL, ITU624-4 |
| 输出数量 | 1 |
| 端口数目 | BNC per IEC 61169-8 Annex A |
| 信号电平 | 1V nominal |
| Output Impedance | 75Ω |
| 反射损失 | > 35dB to 5MHz |
串行视频输出 | |
|---|---|
| 标准 | SMPTE ST 259-C - 525 or 625 line |
| 输出数量 | 4 |
| 端口数目 | BNC per IEC 61169-8 Annex A |
| 信号电平 | 800mV nominal |
| 直流偏置 | 0V ±0.5V |
| 上升/下降时间 | 900ps nominal |
| 过冲 | < 10% of amplitude |
| 反射损失 | > 15dB to 270MHz |
| 抖动 | < 0.20UI (all outputs) |
| Embedded Audio | SMPTE ST 272-A |
Decoder PerformanceSDI outputs only | |
|---|---|
| 频率响应 | < ±0.1dB (100kHz to 4.2MHz) |
| 微分增益 | < ±0.5% typical |
| 微分相位 | < ±0.5° typical |
| Noise Floor | < -60dB rms (black video VBI lines, 15kHz to 5MHz) |
| C/L Gain | < ±0.5% |
| C/L Delay | ±9ns |
| Minimum Delay | 4.5 lines |
| Maximum Delay | 1 frame + 4.5 lines |
Analog Audio Input-A4 only | |
|---|---|
| 输入数量 | 4 |
| Type | 平衡 analog audio |
| Input Impedance | 20kΩ minimum (differential) |
| Sampling Frequency | 48kHz |
| 信号电平 | 0dB FS => 18 or 24dBu (Software selectable) |
| Level Control Range | ±10dB |
| 频率响应 | ±0.1dB (20Hz to 20kHz) (broadcast quality) |
| 信噪比 | 100dB |
| THD+N | < 0.001% (> 100dB) @ 1kHz, -0.5dB FS < 0.001% (> 100dB) @ 20Hz to 20kHz, -0.5 dB FS (input video locked to genlock video) |
| 共模抑制比 | > 90dB @ 1kHz |
AES Audio Outputs-A4 only | |
|---|---|
| 输出数量 | 2 |
| Output Standard | SMPTE ST 276, single ended synchronous AES |
| Connectors | BNC per IEC 61169-8 Annex A |
| Resolution | 24 bits |
| Sampling Rate | Synchronous 48kHz |
| Minimum I/O Delay | 4.5 lines |
| Maximum I/O Delay | 2.5s |
电气 | |
|---|---|
| 电压 | +12V DC |
| 功率 | |
| 7837CDM | 17 瓦 |
| 7837CDM-A4 | 21 瓦 |
| EMI/RFI | Complies with FCC Part 15, Class A, EU EMC directive |
物理参数 | |
|---|---|
| 插槽数 | |
| 7700FR-C | 2 |
| 7800FR | 1 (7837CDM) or 2 (7837CDM-A4) |
订购信息|
| 7837CDM | Composite Analog Video A to D Converter with Frame Synchronizer |
|---|---|
| 7837CDM-A4 | Composite Analog Video A to D Converter with Frame Synchronizer with 4 analog inputs |
订购可选项 | |
|---|---|
| 注意 | • Rear plate must be specified at time of order - eg: [model]+3RU |
| Rear Plate Suffix | |
|---|---|
| +3RU | 3RU rear plate for use with 7700FR-C, 7800FR, 7800FR-QT or 7801FR Multiframes |
Enclosures | |
|---|---|
| 7700FR-C | 3RU Multiframe which holds 15 single slot modules |
| 7800FR | 3RU Multiframe which holds 15 single slot modules |
| 7800FR-QT | 3RU Quiet Multiframe which holds 15 single slot modules |
| 7801FR | 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules |