Lexicon PCM 80 - Manual (Page 24)

Lexicon
PCM 80 User Guide
2-6
SlipSample: Indicates that a single sample is misaligned with the window
defined by the Word Clock. This may occur when an external
master changes sample rate, or when it is just powering up, but
should not occur in normal operation.
CRC: Indicates a Cyclic Redundancy Check error in the incoming data.
Parity, Biphase: Indicate that at least one bit (and therefore at least one audio
sample) was corrupted.
Parity, Biphase, and Confidence errors are most often caused by
inappropriate cabling. Be sure to use 75
Ω
video-grade cable,
kept as short as possible — standard audio cable will not work
reliably.
Each error is reported by name, with the number of occurrences of that particular
type of error. The display might show, for example "CRC: 4752". As many as
9999 instances of each error can be shown. If the number of actual errors
exceeds 9999, the display will indicate ">9999". A special symbol (
■ ) before the
error type indicates the most recently received error.
Press Load/ ✱ from the Dig In Status display and use ADJUST to scroll through the Error
Log.
Audio *Error Log
0.0 ■ CRC >9999
A typical Error Log display showing that the last
error received was a CRC error (
■ CRC) and
that there have been more than (>) 9999 in-
stances of CRC errors since Word Clock was
last set to Ext.
To clear the Error Log, reselect Ext from the Control Mode Word Clock display.
This will cause the PCM 80 to attempt to lock to the current external source and
will reset the Error Log. The log is also cleared on power up, and whenever it
relocks (Auto Lock On).
0.1 Analog In Lvl
This is a master level control for analog left and right inputs. Use ADJUST to
select values from 0-100%. If using only analog inputs, this should be 100% for
best audio performance. Values between 0% and 100% are for mixing analog
and digital sources.
Note: If the analog signal being fed into the PCM 80 is too hot, turn it down by
adjusting the front panel INPUT level control, or by changing the rear panel Input
Gain switch. (See Setting Audio Levels in Chapter 1.)
0.2 Dig In Lvl
This is a master level control for digital left and right inputs (post A/D converter).
Use ADJUST to select values from 0-100%. If using only digital inputs, this
should be 100%, with Analog InLvl set to 0% for best audio performance.
Values between 0% and 100% are for mixing analog and digital sources.