Signal Processing Systems : Converters : Evertz - 7720ADC-A4

Quad Analog Audio to Dual AES Converter

Model: 7720ADC-A4

Auto detect composite video or DARS on the reference input
24-bit, high-quality analog to digital audio conversion
Support for 4 channels of analog audio (2 AES/EBU)
Local card edge display and control of input gain
0dBFS programmable from 8dBu to 27dBu

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The 7720ADC-A4 is a high-quality, 24-bit, analog to digital audio converter which provides digital conversion of 4 balanced analog audio channels and provides 2 unbalanced (or balanced from the 7720ADC-A4-B) AES/EBU channels out. The sampling clock may free run at 48KHz or may be locked to either a DARS (Digital Audio Reference Signal) reference or composite video reference. Level control is provided via a card edge toggle switch. The input gain level can be read out from a card edge display for convenience. The full scale digital signal can be calibrated to accommodate peak levels ranging from 8dBu to 27dBu with 0.5dB resolution. The audio ADC features a card edge VU meter for quick confidence monitoring. Four separate level indicators are provided via bargraphs for quick validation of audio program material.

Auto detect composite video or DARS on the reference input
24-bit, high-quality analog to digital audio conversion
Support for 4 channels of analog audio (2 AES/EBU)
Local card edge display and control of input gain
0dBFS programmable from 8dBu to 27dBu
Automatic DC removal
A card edge display provides a 4 channel bargraph type level indicator display for confidence monitoring
VistaLINK® capable for remote monitoring via SNMP (using VistaLINK® PRO) when installed in 7800FR frame with a 7700FC VistaLINK® Frame Controller

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

Analog Audio Input - Type: Balanced analog audio
Analog Audio - Number of Inputs: 4
Analog Audio Input - Connector: Removable terminal strip
Analog Audio Input - Impedance: 10 kohms minimum (differential)
Analog Audio Input - Sampling Rate: 48 kHz (freerun or locked to the reference)
Analog Audio Input - Signal Level: 0dB FS =>8dBu to 27dBu (programmable via 0dB/+6dB jumper and card edge fine gain with -10dB to +10dB range)
Analog Audio Input - Frequency response: < ±0.1dB, 20Hz to 20kHz
Analog Audio Input - SNR: 100dB with input at -1dB FS
Analog Audio Input - THD+N: < 0.001% (> 100dB) @ 20Hz to 20kHz, -1dB FS
Analog Audio Input - CMRR: > 100dB at 1kHz
Analog Audio Input - Crosstalk: < -100dB at 20Hz to 20kHz
Analog Audio Input - Interchannel Phase Error: < 1°, 20Hz to 20kHz
Reference Video Input - Standard: NTSC (SMPTE ST 170), PAL (ITU624-4), DARS
Reference Video - Number of Inputs: 1
Reference Video Input - Connector: BNC per IEC 61169-8 Annex A
Reference Video Input - Signal Level: Video Max: 2V p-p video (composite only); Video Min: Sync level 150m (composite only)
Reference Video Input - DARS: SMPTE ST 276, 1V p-p
Reference Video Input - Frequency Lock Range: ±100ppm from nominal
Reference Video Input - Return Loss: > 25dB to 10MHz (with external 75Ohms termination)
AES Audio Output - Standard: SMPTE ST 276 single ended AES
AES Audio - Number of Outputs: 2
AES Audio Output - Connector: BNC per IEC 61169-8 Annex A
AES Audio Output - Sampling Rate: 48 kHz
AES Audio Output - Impedance: 75 ohms unbalanced
AES Audio Output - Resolution: 24 bits
AES Audio Output - Input/Output Delay: 0.87 ms
Number of Slots: 1
Active Power: 10 Watt
DC Voltage: 12 Volts
Regulatory Compliance: FCC Part 15 Class A, EU EMC Directive

7720ADC-A4-B - 24-bit Quad Analog Audio to Dual AES Converter

Quad Analog Audio to Dual AES Converter 64 kb - Data Sheet

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