Signal Processing Systems : Converters : Evertz - 7837CD2-A8

Dual Composite Decoder with 8 Analog Inputs

Model: 7837CD2-A8

One input BNC per channel
75 Ohms or Hi-Z input impedance (jumper configurable)
Two SD-SDI outputs per per channel 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 with 75? or Hi-Z input impedance (jumper configurable). One time base for both channels

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The 7837CD2 line of composite analog to serial digital video converters are dual broadcast quality video decoders. The 7837CD2-A4 and the 7837CD2-A8 versions offer four (two per decoded channel) or eight (four per decoded channel) high quality analog audio A/D converters. Advanced 3D adaptive comb filtering technology is utilized to eliminate moving artifacts introduced during the decoding process. This makes the 7837CD2 series ideal for use in applications where the signal is destined to enter compression systems. The 7837CD2 series utilizes 12 bit video ADCs for superior precision and image quality. The 7837CD2 series is fully SNMP enabled when used in conjunction with a 7700FC frame controller card. With full SNMP capabilities, the 7837CD2 series can also be controlled by any SNMP enabled Evertz control panel like the CP-2232E, amongst others. In addition to SNMP control, the 7837CD2 series can be controlled locally used its internal On-Screen-Display capabilities.

One input BNC per channel
75 Ohms or Hi-Z input impedance (jumper configurable)
Two SD-SDI outputs per per channel 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 with 75? or Hi-Z input impedance (jumper configurable). One time base for both channels
Video frame synchronizer
Infinitely variable output phase (27MHz clock increments)
Freeze modes: black, freeze
Comprehensive on screen display for module config
8 balanced analog audio inputs (four stereo pair)
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 2.5 seconds
Audio advance of up to 1 frame
4 channels (one full group) of audio is multiplexed onto each of the outgoing digital video signals
4 unbalanced AES audio outputs using BNC connectors

Converter Signal Types - Audio & Video
Converter Type - Analog to Digital Converter
Spec Sheet available - Yes

Decoder Performance - Frequency Response: < ±0.1dB (100kHz to 4.2MHz)
Decoder Performance - Differential Gain: < ±0.5% typical
Decoder Performance - Differential Phase: < ±0.5° typical
Decoder Performance - Noise Floor: < -60dB rms (black video VBI lines, 15kHz to 5MHz)
Decoder Performance - C/L Gain: < ±0.5%
Decoder Performance - C/L Delay: < ±9ns
Decoder Performance - Minimum Delay: 4.5 lines
Decoder Performance - Maximum Delay: 1 frame +4.5 lines
Decoder Performance - Inter-channel crosstalk: Within noise floor measurement
Analog Audio - Number of Inputs: 4 (2 per video channel)
Analog Audio Input - Type: Balanced analog audio
Analog Audio Input - Input Impedance: 20kOhms minimum (differential)
Analog Audio Input - Sampling frequency: 48kHz
Analog Audio Input - Signal Level: 0dB FS => 18 or 24dBu (Software selectable)
Analog Audio Input - Level Control Range: ±10dB
Analog Audio Input - Frequency response: ±0.1dB (20Hz to 20kHz) (broadcast quality)
Analog Audio Input - SNR: 100 dB
Analog Audio Input - THD+N: < 0.001% (> 100dB) @ 1kHz, -0.5 dB FS; < 0.001% (> 100dB) @ 20Hz to 20kHz, -0.5 dB FS (input video locked to genlock video)
Analog Audio Input - CMRR: > 90dB @ 1kHz
AES Audio - Number of Outputs: 2 (1 per channel)
AES Audio Outputs - Output Standard: SMPTE ST 276, single ended synchronous AES
AES Audio Outputs - Connectors: BNC per IEC 61169-8 Annex A
AES Audio Outputs - Resolution: 24 bits
AES Audio Outputs - Sampling Rate: synchronous 48kHz
AES Audio Outputs - Minimum I/O Delay: 2.9ms
AES Audio Outputs - Maximum I/O Delay: 2.5s
Number of Slots: 7700FR-C: 3; 7800FR: 2
Input Signal Types: Audio, Video
Output (Converted) Signal Type: Audio, Video
Active Power: 21 Watt
DC Voltage: 12 Volts
Regulatory Compliance: FCC Part 15 Class A, EU EMC Directive

7837CD2 - Dual Composite Decoder

7837CD2-A4 - Dual Composite Decoder with 4 Analog Inputs

Dual Composite Decoder 113 kb - Data Sheet

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