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Instant Replay 3 Operations Manual
Page 51
The Balanced Analog Outputs are a pair of male XLR-3 connectors. The output is
electronically balanced, and is capable of driving loads of 600 ohms or greater.
Output cables should be wired the same as shown above for the inputs.
Analog RCA Audio Inputs
The unbalanced Audio Inputs are provided on a pair of female RCA connectors.
Analog RCA Audio Outputs
The unbalanced Audio Outputs are provided on a pair of female RCA connectors.
Headphone Output
The Headphone Output always carries the same signal as the Main outputs, but its
level is controlled by the Headphones Level control on either the Home screen or the
Record screen.
When the Preview button is activated in Stop mode, the Headphone Output is active
and the Main Outputs are turned off during subsequent playback. It may be helpful
to use the Headphone Output for control room monitoring, while the Main Outputs
provide the main feed to a mixer or transmitter.
DIGITAL AUDIO CONNECTIONS
AES/EBU Input
An XLR-3 female connector is provided for digital input in the AES/EBU format.
There is a Sample Rate Converter built in to Instant Replay. Use only special AES
cable having an impedance of 110 ohms. Limit the cable run to 100 feet. Do not use
microphone cables for runs of over 6 feet.
IEC 958 Type II Input
An RCA "phono" connector provides a digital input from consumer or semi-pro
equipment. Most equipment with connectors marked "S/P DIF" can be connected to
this input.
Use only low-capacitance 75
coaxial cable, such as those made for video
connection between VCRs and television video inputs. Do not use audio cables with
RCA connectors.
Digital Audio Interfacing
Should Instant Replay detect a mismatch at its digital audio ports when preparing to
record, the P
LAY
button is disabled and an error message, INTERFACE MISMATCH,
appears in the display. Possible mismatches can include professional/consumer data
format conflicts, non-audio data and data flagged as invalid. Copyright Protected
data (“SCMS”) will cause a similar error message. Correct the mismatch as
necessary.
Another mismatch condition can arise between the selected RECORDING FORMAT
and the sample rate of the incoming digital audio. The 48K Linear format requires
the digital audio to be input from a 48K source. The 44.1K Linear format requires
digital audio to be input from a 44.1K source.