521 East 3
rd
Street Mt. Vernon, NY 10553 • www.keydigital.com
Rev 1.1
– Apr, 2022
13
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For un-balanced audio, use the + and Ground pins of each channel
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Drives audio signals up to 2VRMS with a sampling rate of 192KHz
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Up to 255ms of delay may be added per output using KDMS Pro software or by sending command via
TCP/IP or RS-232. Delay settings apply to both the analog and digital ports for the output.
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There are no volume or tone control features
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There are no format conversion features. For example, to achieve 2ch analog audio output, the selected
HDMI input source audio format must be 2ch.
Digital Audio Outputs (4):
Optical
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Provides digital audio output from the selected HDMI input source.
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Supports PCM, SPDIF (IEC 60958), Dolby Digital®, and DTS
™ up to 5.1 / 6.1
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There are no volume or tone control features
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There are no format conversion features. For example, to achieve 2ch analog audio output, the selected
HDMI input source audio format must be 2ch.
IR In/Out (4):
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The default setting is IR Input. Direction may be changed using KDMS Pro software, TCP/IP or RS-232.
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IR In/Out ports correspond to their respective Rx unit. IR is not routable
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RS-232 is not supported
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Only the provided IR Sensor and IR Emitter should be used. Third-party sensors or emitters may not be
compatible and/or may result in damage
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The included IR Sensor Receives signals from a 90° angle at up to 30 ft. away.
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Maximum supported IR burst frequency is 55kHz.
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Pinout:
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Tip = IR in/out signal, Ring = +5V sensor power, Sleeve = Ground
Service USB (1):
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Micro USB port
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Used for configuration and control from PC via KDMS Pro, KDMS, or third-party control terminal
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Used for firmware updates (consult with Key Digital tech support before updating firmware).
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Note:
After updating firmware, all unit settings are restored to defaults except IP information.
Please collect all customized settings info before loading firmware.
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Supports USB driver for Windows, Mac
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Will register as “Prolific USB-to-Serial Comm Port in Device Manager
