User guide

Please refer to the 888/24 I/O Installation Guide for specific instructions and guidance.
888/24 I/O Index | All FAQ Index
[4362]
I have a USD and a device that can convert the ADAT proprietary sync to SMPTE how should I set it up?
Plug the USD slave clock out to the first audio interface slave clock in. (888/24 etc. if you have one or to the ADAT
Bridge I/O) Hook up the ADAT bridge I/O word clock out to the ADAT sync device's 48k in and set the sync device
to ext sync. Connect the sync device's SMPTE out to the USD LTC in and make sure the sync device is configured to
send SMPTE. Set Pro Tools to internal sync and put it on-line. You do not have to configure the sync device in OMS
for this setup as Pro Tools will receive the positional reference directly from the USD. Configure the USD as normal.
888/24 I/O Index | All FAQ Index
[2217]
Specifications for 888|24 Audio Interface.
The 888|24 I/O is an audio interface used with Pro Tools (requires PT 4.1 or later). It connects to any of the
following cards: PT Project PCI, Disk I/O PCI, d24 Audio Card, Mix Core, Mix Farm. The 888|24 I/O may also be
connected to the legacy port of a 192 I/O on a Pro Tools HD system.
General
Analog Inputs/Outputs: Actively balanced XLR connectors; internally switchable between +4dBu and -10dBV
operating levels
Analog Level Trimming: via recessed trim pot, accessible from front panel
Digital I/O's AES/EBU: 8 channels; balanced XLR connectors
Digital I/O's S/PDIF: 2 channels; coaxial RCA connectors
Sample Rate: 44.1kHz or 48kHz +/-10ppm
Clock Reference: Super Clock 256x sample clock; In/Out; BNC connectors; additional clock references supported via
Digidesign's Universal Slave Driver, SMPTE Slave Driver, Video Slave Driver and other optional synchronizers
Nominal Operating Level: +4dBu; factory calibrated at -18dB headroom
A/D Specifications (typical)
SNR (signal-to-noise ratio): •-113dB (balanced, A-weighted), •-110dB (unweighted)
THD: 0.003% -0.01dB @ 1kHz 20Hz-20kHz (band-limited)
Maximum Input: +26dB
Frequency Response: 20Hz-20kHz +/-1db
Clock jitter: <40pS RMS 22Hz-22kHz BW
D/A Specifications (typical)
SNR (signal-to-noise ratio): •-110dB (balanced, A-weighted), •-107dB (unweighted)
THD: 0.003% -0.01dB @ 1kHz 20Hz- 20kHz (band-limited)
Maximum Output: +26 dB/channel (bridging loads)
Frequency Response: 20Hz-20kHz +/-1dB
Output Impedance: 50ohms typical (45 min, 55 max)
Input Impedance: 24 kohms typical
Physical Specifications
Power requirements: 90-260 VAC, 47-63 Hz; 30 VA; auto-switching
Weight: 7 lbs, 9 oz (4.1 kg)
Dimensions: 2u external rackmount device; 19" x 3.5" x 9.75" (48.26 cm x 8.89 cm x 24.77 cm) black anodized
finish
D/A Converters changed from 20-bit to 24-bit starting with s/n DH17130 (Rev J).
888/24 I/O Index | All FAQ Index
96 I/O
What are the primary differences between the 96i I/O and 96 I/O Audio Interfaces?
Is the 96 Audio Interface expandable like the 192 Audio Interface (with optional Digital I/O, D/A or A/D converter cards)?