A/D Sync; Output Res; Optical Out; Soft Lim - Apogee PSX-100 Operating Manual

PSX-100 User's Manual

A/D SYNC

Determines sync source for the A/D section. If the unit is in 'Digital Copy' mode, this is automatically selected
to DIG IN. When in 'Digital Copy' mode, signals connected to the analog inputs (A/D section) will not be rout-
ed to the outputs. PRESS & HOLD to enter into 88.2k/96k sampling rate mode.

OUTPUT RES

Sets the resolution (word length, bit rate, etc.) of the outputs. The A/D and D/A converters always convert at
24 bit but the output resolution can be processed through UV22HR to retain high-resolution sound at lower bit
rate (e.g., 16 bit CD).

OPTICAL OUT

Sets optical output format to either S/PDIF or ADAT.

SOFT LIM

Turns Soft Limit on/off on analog input signal – see Analog Processing section.

ABS

Turns bit-splitting mode on/off for MDM outputs – ADAT & TDIF only (for AES/EBU outputs see below). If ABS
LED is already lit, Press & Hold will turn on ABS AES input and indicate this by briefly flashing this LED. Turning
off ABS also turns off ABS processing for AES – see Press & Hold below.
MUTE L
Mutes left channel of the main digital outputs only. Does not affect meters, DAC or AUX.
MUTE R
Mutes right channel of the main digital outputs only. Does not affect meters, DAC or AUX.

METER

In Confidence Monitor Mode, selects metering of A/D output or D/A input. In all other modes, this button is
non-functional. Press & Hold to clear clip indicators on meters.

DIG COPY

Enters/exits Digital Copy mode (see Digital Copy under 'Operation' section). If you try to access digital copy
while in analog monitor mode, the AD OUT LED will flash to indicate that you must return to confidence mon-
itor mode first. If you try to leave DIG IN as the AD SYNC when in digital copy mode, DIG COPY LED will blink.
The PSX-100 will remember the sync source when leaving confidence monitor mode and reinstate it upon reen-
try to confidence monitor mode.

DA INPUT

Selects digital input. For TDIF, remember to supply WC IN, unless you have set DIP switch 1 ON (LRCK sync
mode – see DIP Switches). PRESS & HOLD to enter into 'Analog Monitor' mode (refer to the applications sec-
tion).

MDM IN

Selects which channel pair of ADAT or TDIF will be used as input. Also selects which set of four channels is input
when ABS is on.
Press & Hold Buttons
These additional functions are accessed by pressing the appropriate button and keeping it pressed for two sec-
onds.
A/D SYNC
Enters into 'FAST' (88.2/96kHz sampling rates) mode – The x2Fs LED will light indicating that a 88.2K or 96K
sample rate is selected. The output resolution is automatically selected to full 24-bit. All 'MDM IN' LEDs will
light up, indicating that incoming MDM signals are expected to be in Apogee's 96K format (and would be trans-
mitted similarly). The ABS LED will go out (if it was previously lit) indicating that there is only one format option
(i.e., that regular "pairwise" ABS does not function when the PSX-100 is in 'FAST' mode).
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