MSB Technology Link DAC III User Manual page 3

Analog Filter Change
The analog filters in the output stage can be adjusted. The normal con-
figuration complies with the common practice of rather heavily filtering the
outputs to achieve perfect measurements. For those who prefer greater
dynamics and attack, try removing the jumpers from positions 2 and 5 of
J16. They can be placed on positions 1 and 4 for safe keeping.
J16
Ground 1
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
L Filter 1 2
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
L Filter 2 3
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
Ground 4
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
R Filter 1 5
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
R Filter 2 6
1 2 3 4 5 6 7 8 9 0
Ground 7
+8V, -8V 8
N F
ORMAL ILTERS
Other Options
Headers J18 and J19 are for the upgrade boards also sold by MSB (see
back page). The standard jumper positions are shown below for refer-
ence. Any missing jumpers will prevent the LINK III from working.
J18
DSP Headers
Ground
1 2 3 4 5 6 7 8 9
S/PDIF
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
S/PDIF (inverted)
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
Ground
1 2 3 4 5 6 7 8 9
Digital Active
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
Option 1
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
192 kHz
Ground
N
ORMAL POSITION OF
J16
1 2 3 4 5 6 7 8 9
Ground 1 2 3 4 5 6 7 8 9 1
1 2 3 4 5 6 7 8 9
L Filter 1 2
1 2 3 4 5 6 7 8 9 0
L Filter 2 3
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9
Ground 4
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
R Filter 1 5
1 2 3 4 5 6 7 8 9 0
R Filter 2 6
1 2 3 4 5 6 7 8 9 0
Ground 7
+8V, -8V 8
R F
EDUCED ILTERING
J19
1 Ground
1 2 3 4 5 6 7 8 9 0
2 1 2 3 4 5 6 7 8 9 0 Data
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
3 Bit Clock
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
4 L/R Clock
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
5 M Clock
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
6
7 Data Flag
8 Ground
LINK III J
UMPERS
6
LINK III Back Panel
The back panel contains the interface connectors and one toggle switch.
Toggle Switch - On a LINK III with no options installed, the toggle
switch performs a digital phase invert. The switch down is the normal
phase. Placing the switch up will invert the phase. This switch can be
used to activate certain option boards as well.
Analog Audio Input - The analog input provides a high quality pass-
through switching feature that has many applications. In other words, the
pass-through connections are made unless a digital input is active. Active
means that the source plugged in is powered on, but not necessarily play-
ing. This feature can be changed to only switch when nonzero digital sig-
nals are present. In this case the analog input is only interrupted when the
digital source is playing, not just turned on. This option is specifically de-
signed for use with C and Ku satellite receivers such as the 4DTV re-
ceiver. To configure this option, see the setup section.
Analog Audio Outputs - The LINK III outputs a standard 2V RMS at
0 dB. The output impedance is 330 ohms.
Digital Inputs - Both a Toslink optical and Coaxial Digital audio input is
provided. Autodetection selects either active input. If both are active, the
Coaxial input is selected. Active inputs are indicated with front panel LEDs.
A blank location is provided for installation of an XLR connector, part of
the Nelson and 192 kHz upgrades.
Power- The LINK uses an outboard power supply, with at least +8VDC
and +/- 15VDC. The LINK contains no fuses to replace, but instead
contains high-performance resettable fuses. They allow the unit to return
to normal after an overload condition. The LINK is designed to operate
continuously, and should be left on at all times.
3