User manual

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Horus Release Notes
HORUS FIRMWARE
Make sure that you are running the latest certified firmware:
http://www.merging.com/horus/download
Verify your Horus firmware version by going to the Horus Setup menu and open the System info page
to verify the firmware version installed.
Refer to the Horus User Manual Firmware Update section in order to proceed with a Firmware
update.
Note: There are two types of Horus updates possible. Either the Horus Firmware update (frequent
releases) or the Maintenance Mode update (un-frequent releases but mandatory for some firmware).
CURRENT LIMITATIONS (Firmware)
Latest Firmware limitations:
 RAVENNA redundancy is not implemented
 MIDI/RS422/BiPhase/GPIO not implemented
 DSD (refer to Horus User Manual for precise details)
o No VU meters
The limitation list above will be progressively reduced with firmware updates.
Notes:
- Supported sync: RAVENNA (PTP slave), Wordclock, Video sync, AES input and MADI input
- Sync Source known issue: LTC input is accurate up to 10x nominal speed (applies to early
Horus production only)
FIRMWARE UPDATES HISTORY
Fixed in Firmware version 23165:
 Fixed. Web Access: Meters page is broken/no longer working
 Fixed. Mic Pre Amps gain control accuracy
Fixed in Firmware version 22862:
 Fixed. Horus TimeCode reading issue
 Improvement: DA filter options
 Sharp roll-off filter: Offers a flat bandpass response up to 22kHz, within
0.2dB, at the cost of a higher latency (36 samples)
 Slow roll-off filter: Offers a low latency of 9 samples, at the cost of a
bandpass attenuation starting at 16kHz with a maximum of -2.5dB at 22kHz:
Fixed in Firmware version 22777:
 Improvement: Page advanced: renamed System
 Improvement: PTP lock improvements when multiple Horus are connected to a Switch
 Improvement: Horus DSD headroom set to +6dB (details in Horus User Manual)
 Improvement: The Mic/Line gain range has been increased from +0dB/+60dB to +0dB/+66dB
 Improvement: Page Setup updates:
 Cooling mode and Terminations have been moved to System Page
 Button Advanced -> renamed System
 Button System Info -> renamed Info
Fixed in Firmware version 22527:
 Improvement: Screensaver Dark option
 Improvement: Horus Dim display option now applied to Horus Power Led
 Improvement: If a 48V short circuit or failure is detected, 48V is forced off on all A/D channels
and the error message is displayed.