Skip to main content
Contact Us

IQDLY20-21 AES & Analog Audio Delay and Shuffler Module

The IQDLY20 and IQDLY21 each provide two channels of analog audio and four channels of AES audio with up to 3 seconds of preset delay, and 0.5 seconds of tracking audio delay. The availability of both analog and AES inputs and outputs also enables them to be used as a two-channel audio ADC and DAC. The IQDLY20 inlcludes unbalanced AES connections via BNC.

FEATURES

  • 4x balanced or unbalanced AES paths
  • Synchronizes AES inputs
  • Proc amp control of audio channels
  • Flexible preset and tracking delay
  • Channel-level shuffling
  • 4 off assignable 4 input mixers
  • References to video or AES signals
  • Professional standard 48 kHz operation, sample rate converts non-48 kHz signals
  • Firewall for processed PCM audio to provide a continuous output regardless of input
  • Passes non-PCM AES signals including Dolby E
  • Pair-level Dolby E routing

SPECIFICATIONS

Inputs and Outputs

Signal Inputs
Unbalanced digital audio: 2x AES/EBU, AC3, Dolby E (BNC)

Balanced digital audio: 2x AES/EBU, AC3, Dolby E (25-way D-type)

Analog: 2 channels (1 stereo pair)

Reference:

  • IQDLY21: Composite video/AES/EBU (BNC)
  • IQDLY20: Composite video (BNC)


Signal Outputs
Unbalanced digital audio: 2x AES/EBU, AC3, Dolby E (BNC)

Balanced digital audio: 2x AES/EBU, AC3, Dolby E (25-way D-type)

Analog: 2 channels (1 stereo pair)

Control Interface
GPI: 1x closing contact I/O interface (BNC)

Card Edge and RollCall Controls

Card Edge Controls
NONE

Card Edge Indicators
AES input present: 1x LED per pair Reference Present

CPU running/power: One green LED, flashing = OK

RollCall Functions

Audio Controls
Set line up level: +20 to –20 dBu in 1 dB steps

Set headroom: 4 to 24 dB in 1 dB steps

Set audio detector thresholds: High and low levels, time delay

Input audio delay: Up to 1.5s additional delay in 1 ms steps

Input side control proc audio gain and polarity: Independent gain, Mute, Polarity control input channels

  • +18 dB to –18 dB in 0.1 dB steps


Channel routing: Output channels routed from analog inputs 1-2, AES pairs 1 to 4, test tone and silence

Output side control proc gain and polarity: Independent gain, Mute, and Polarity control over output channels

  • +18 dB to –18 dB in 0.1 dB steps


Global delay offset: Up to +1.5s in 1 ms steps, common to all processed audio

Variable audio delay control source: Up to 0.5s from RollTrack + GPI

Tone frequency, amplitude and ident: 2-channel tone generator

  • 100 Hz to 15 kHz in 100 Hz steps


Tone Setup
Frequency: 100 Hz to 15 kHz in 100 Hz steps

Channel ident: 0.5s interruption every 2s

Other Controls
User memories: Name, clear, save and read 8 user memories

Default audio output: Silence

GPI/O set-up: May be attached to any memory function/polarity

Logging
Audio silence, high level, low level, overflow: For processed audio channels only

Audio Delay Setup
Delay:

  • Audio delay: Fixed, RollTrack + fixed, GPI + Fixed


RollTrack Output
Delay: Current audio delay

Reference state: Present, Error, Loss

External audio state: Pair present

AES 1-2: Loss, Present

GPI: Low, High, Inactive

General Specifications

Noise floor: Better than -100 dBFs (20 Hz to 20 kHz)

Channel amplitude matching: Better than ±0.15 dBu

Output level accuracy: Better than ±0.2 dBu

Flatness: Better than +0.1 dBu to -0.3 dBu (20 Hz to 20 kHz with reference to 1 kHz )

Digital Audio Input (Balanced)
Connector/format: 25-way D-type

Sample frequency: 25 – 96 kHz (48 kHz for reference)

Input cable length: >150m of AES3 cable

Impedance: 110Ω

Digital Audio Input (Unbalanced)
Connector/format: BNC

Sample frequency: 25 – 96 kHz (48 kHz for reference)

Input cable length: >500m of RG59 cable

Impedance: 75Ω

Output sampling: 48 kHz frame locked to 48 kHz AES/EBU reference in AES lock mode

Digital Audio Output (Balanced)
Connector/format: 2-way D-type

Level: 3 Vp-p typical into 110Ω

Digital Audio Output (Unbalanced)
Connector/format: BNC

Analog to Digital Audio
Analog input impedance: 10 kΩ

Frequency response: 20 Hz to 20 kHz (±0.1 dB)

Distortion (THD+N): Better than -90 dB, 1 kHz @ -1 dBFS

Dynamic range: >106 dB

Audio delay: Equal to video delay + adjustable offset

Digital to Analog Audio
Analog output impedance: 50Ω

Frequency response: 20 Hz to 20 kHz (±0.1 dB)

Distortion (THD+N): Better than -92 dB at 23 dBu, 1 kHz @ -1 dBFS

Dynamic range: >106 dB

Power Consumption
Module power consumption:

  • 9 W Max (A Frames)
  • 8 PR (B Frames)

ORDERING INFORMATION

IQDLY2115-1A
AES and Analog Audio Delay. Balanced audio connection via 25-way D-type. 2 analog inputs, 2 AES inputs, 2 analog outputs, 2 AES outputs.

IQDLY2117-2A
AES and Analog Audio Delay. Balanced audio connection via 25-way D-type. 2 analog inputs, 2 AES inputs, 2 analog outputs, 2 AES outputs and 1x GPI.

IQDLY2018-2A
AES and Analog Audio Delay. Balanced audio connection via 25-way D-type, Unbalanced AES connection via BNC. 2 analog inputs, 2 AES inputs, 2 analog outputs, 2 AES outputs and 1x GPI.

For more details on enclosure types please refer to the IQ Modular Enclosures datasheet.

DOCUMENTS & DOWNLOADS

DATASHEETS

IQDLY20/21: AES and Analog Audio Delay and Shuffler Module Datasheet

The IQDLY20/21 from Grass Valley provides two channels of analog audio and four channels of AES audio with up to 3 seconds of preset delay, and 0.5 seconds of tracking audio delay

Download

DOCUMENTATION LIBRARY

Further documents

Already know what you're looking for? Click the link below to access our full documentation library

Visit Library
Go back to top