American Audio PSX - REV 1-2 Manuel d'utilisateur télécharger pdf (Page 18)

• ERROR simply means loss of lock.

• CRC error checking is not employed because some digital playback devices do not encode it properly, lead-

ing to false errors (eg the PSX-100 will not indicate an ERROR when receiving a CRC error flag).

MDM IN LEDs

Indicate which MDM channel pair is being monitored.

• When two LEDs are lit (eg 1-2 and 3-4), the PSX-100 is applying Apogee Bit Splitting processing on the

MDM inputs to reconstruct a 44.1 kHz or 48 kHz bit-split signal.

• When all four LEDs are lit, the PSX-100 is applying Apogee Bit Splitting processing on the MDM inputs to

reconstruct a 88.2kHz or 96kHz bit-split signal.

DIP Switches

The unit is shipped default from the factory with all the DIP switches in the OFF (down) position. The function-

ality is as follows:

DIP Function OFF (Down—default) ON (Up)

1 TDIF CLOCK TDIF clock is WC input TDIF clock is LRCK

See Note (1) below (clock signal in multipin

TASCAM connector)

2 ‘OVER’ LED HOLD TIME infinite OVER LED hold

See Note (2) 2 second OVER LED hold

3 A/D INPUT POLARITY pin 2 hot pin 3 hot

4 NOMINAL OUTPUT LEVEL +4dBu (professional) –10 dBv (consumer)

5 NOMINAL INPUT LEVEL +4dBu (professional) –10 dBv (consumer)

6 OVER THRESHOLD

See OVER Threshold below

7 OVER THRESHOLD See OVER Threshold below

8 AES BIT-SPLITTING MODE ABS OFF on AES inputs Paqrat or ABS bit-split signals

always combined from two

AES inputs (not applicable at

88.2/96 kHz sampling)

9 SINGLE/DOUBLE WIRE Single-wire operation 88.2/96 Double-wire operation

10 WC OUTPUT RATE WC output is same as main rate WC output is 44.1/48 kHz

always, even when unit samples

at 88.2/96 kHz.

See Note (1)

NOTE 1: 88.2/96 kHz Word Clock operation and TDIF. DIP Switch 1 OFF selects Word Clock as the clock

source for TDIF. While operating at high sample rates (88.2/96 kHz), when the A/D SYNC is set to Word Clock

and the DA INPUT is TDIF, the PSX-100 expects a 44.1/48 kHz Word Clock. If the DA INPUT is NOT TDIF, then

the unit expects an 88.2/96 kHz Word Clock for AD SYNC to Word Clock. When using Word Clock to sync a

TDIF machine while bit-splitting at 88.2/96 kHz, be sure that DIP 10 is set to ON, as the TDIF device will be

recording at 44.1/48 kHz even though the converter is running at 88.2/96 kHz.

NOTE 2: Over Autoclear. When DIP Switch 2 is set to

OFF (infinite peak hold), AutoClear becomes active.

This feature clears the OVER LEDs when the level has

remained below about –50 dB for more than 30 sec-

onds and has then risen above –50 dB.

OVER Threshold

The PSX-100 allows the user to select the number of

consecutive OVERs required to illuminate the OVER indicators. When this threshold is set to 1 sample, every

sample that exceeds 0 dBFS (0 dB Full Scale – digitally, this corresponds to “all ones”, ie the maximum level you

can convert) in level will trigger the OVER LEDs. When it is set to 4 samples, the OVER LEDs will only illuminate

when four consecutive samples are OVER 0 dBFS.

PSX-100 User’s Manual

Page 18

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American Audio PSX - REV 1-2 Manuel d'utilisateur Page 18

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