Merging Hapi MKII, User Manual

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HAPI MKII User Manual
IOM-HORUS-DA8/DA8P (< run 11) - Legacy product
The DA8 (up to 192kHz) and the DA8P (up to DSD) have been shown in testing to be consistently the
quietest multichannel D/A conversion modules available anywhere.
IOM-HORUS-DA8/DA8P Key Features
• Auto-mute circuitry for “no-pop” power cycling
• Digitally controlled trims for line up procedures
• Dynamic range of 127dB (typ.)
• Easy to set dip switches for international operating levels
IOM-HORUS-DA8/DA8P Specifications
Max Line Output @ 0 dBFS (jumpers on +24 dBu) +24 dBu +0/-0.5 dB
Frequency re0/-0.3dB @ fs = 48000 Hz 6 Hz
– 20 kHz
Frequency re0/-0.3dB @ fs = 2.8224 MHz (DSD) NA / 6 Hz
– 20 kHz
Frequency re0/-3.0dB @ fs = 2.8224 MHz (DSD) NA / 2 Hz
– 50 kHz
Line Output Impedance (Differential) 100 Ω
Dynamic Range (A-weighted, typ) 126 dB
THD+N D/A (1 kHz) @ 0 dBFS (IOM-HORUS-DA8) < -113dB (0.00022 %)
THD+N D/A (1 kHz) @ 0 dBFS (IOM-HORUS-DA8P) < -115dB (0.00018 %)
Interchannel Crosstalk @ 1kHz, typ. -135 dB
Connector Pinout DB-25 / AES59 (Tascam Ana.)
Line Output Level calibration
The DA8 and DA8P modules feature both hardware level settings and a software fine adjustment to
align the Analog Output levels to whatever local/organization operational levels are mandated.
On DA8/DA8P cards from run 7 upwards, the hardware level setting is done via software through the
option “max output level” in each DA’s setting page, allowing 24 dBu or 18 dBu max level.
On DA8/DA8P cards prior to run 7 the hardware level setting is in the form of 4 DIP switches per output
channel
The Hardware settings will usually be set only once, at product installation, and only if the desired
Operating Line Level differs from the default ex-factory settings of +18 dBu for 0 dBFS.
Procedure for Hardware alignment (for DA8 prior to run 7):
1. Shut down your Horus and make sure that the Horus back panel Power is also switched OFF.
2. Unscrew all DA8 modules that need adjustment.
3. Pull gently out (5-7 cm is enough) to access the DIP Switches. There is one block of 4 dip switches
per channel. Channel 1 is labeled S1, channel 8 is labeled S8.