LavryBlue 4496
Operation
14
For
unbalanced operation
, you will need to set the analog output mode by positioning the user-selectable
jumpers J2, J3, J4 and J5 inside the 4496. After you open the top cover, they are located next to each analog
XLR output connector near the back of the module’s PC board. Jumper positions (left or right) are viewed
looking at the module’s PC board with the front of the 4496 facing towards you. There are 3 pins on each
jumper block. Choose the mode for each channel by selecting which position these jumpers will be in: if
"Left" - jumper the two leftmost pins, if "Right" - jumper the two rightmost pins.
Analog Output Mode
J2
J3
J4
J5
Balanced output (as shipped from factory)
Left
Left
Left
Left
Unbalanced Output – Pin 2 active, Pin3 to ground
Left
Right
Left
Right
Unbalanced Output – Pin 3 active, Pin2 to ground
Right
Left
Right
Left
•PLEASE NOTE: Pin 1 of each XLR is always grounded, to provide driver-side shield ground. It is highly
recommended to
have only the cable shield connected to Pin 1 for proper cable shield connection
.
Lavry Engineering does not recommend using Pin 1 as signal return for unbalanced configuration, thus all
the jumpers J2-J5 should be on the board in their proper selected position and the shield should be
connected on the XLR end of the cable.
Clock Modes setup:
a 4 position DIP switch (designated as U18) determines the clock settings as follows.
Mode description
Position 1(left most)
Position 2
Position 3
Position 4 (right most)
Independent operation
OFF
OFF
OFF
ON
C.) M•DA-824 Specifications
Noise
-110dBFS (20Hz – 22KHz unweighted)
Distortions
1kHz tone at -1dBFS: .002%FS
1kHz tone at -20dBFS: .0013%FS
1kHz tone at -60dBFS: .0006%FS
Sample rates
96kHz, 88.1kHz, 48kHz, 44.1kHz in CrystalLock™ or Narrow with a
+/- 100ppm lock range (+/- 150ppm typical)
(Front panel lamps indicate sample frequency and “Lock”)
42-100kHz Wide lock mode (varispeed)
Crystal lock accuracy .1ppm / 10 sec maximum
Channel separation -100dBFs at 1KHz
Flatness response +/- .05dB (10Hz -20KHz)
Phase linearity
2 degrees (10Hz - 22 kHz)
Polarity Front panel switch selects “Pin 2 +” or “Pin 3 +”
Analog Outputs
Balanced XLR “+4dBu nominal level” (maximum level of 24dBu +/-. 25dB) or
Unbalanced (Maximum level of 18dBu +/-. 25dB). Balanced /Unbalanced
settings are configurable for Pin 2 or Pin 3 “Hot” operation via user-selectable
jumpers. Individual analog output front panel volume control adjustments (20
turn potentiometers for each channel) provide 0 to +24dBu range for balanced
outputs, and –6dBu to +18dBu for unbalanced operation for a digital signal of
“0dBFS” (full scale digital level).
Digital Input
AES/EBU Balanced XLR, 110 Ohm, transformer isolated. Compatible with
coaxial SPDIF using appropriate adapter.
