MINDPRINT DI-PORT Manual Download Page 5

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In addition, the DI-PORT can receive a 44.1-kHz signal and at the same time send a 48-kHz

signal, or vice versa. For this purpose, the DI-PORT must be set to master mode. With this

option, two devices can actually be operated as masters. In this case, the DI-PORT

operates in slave mode on the receiving side and uses the incoming signal’s sampling

rate. On the send side, it is in master mode and routes the outgoing signal at the selected

frequency. These frequencies may not coincide.

Although it is possible, we recommend that you refrain from running two devices as

masters.

2. Control Features

In keeping with the signal flow in the device, the control features of the DI-PORT are

arrayed from left to right.

2.1 Preamplifiers

Mic/Line In: XLR input designed to take

microphones. The pin assignments of this

XLR socket comply with the international

norm IEC 268-12. In accordance with this

standard, Pin 1 is connected to the

ground, Pin 2 carries the positive signal

and Pin 3 the negative signal. If you use

this multi-purpose socket as a 1/4” jack plug, you can also insert line signals to it.

Green LED: This indicator lights up whenever a signal is routed to the input.

Red Peak LED: This indicator lights up to indicate the signal is clipping . In this case, use

the Gain knob to back off the input level.

Gain: Adjust the input level for the line or microphone inputs of the DI-PORT here. To fine-

tune and visually monitor levels, check out recording level meter of the digital device that

follows the DI-PORT in your signal chain. The peak LED of the DI-PORT indicates a

saturated signal, be sure it does not light up.

2.2 Input Selection and Phantom Power

Front/Rear: This button routes the micro-

phone/line inputs on the front panel or

the line inputs on the rear panel of the

DI-PORT to the A/D converter.

48 V: This button switches phantom power on, which is then fed to the connected

microphone. Dynamic microphones don't require phantom power. When you use capacitor

microphones, be sure to press this button.

2.3 Monitor Section

Mix: The monitor and headphones output patch out

a mix of the digital and analog input signal of the

DI-PORT. The Mix knob lets you blend these signals

to dial in the desired balance.

Volume: Use this knob to dial in the desired level for the headphones and monitor signal

Phones: Connect headphones here.

3. Rear Panel of the DI-PORT

3.1 Analog Connections 

Analog In: These are 6.3 mm (1/4") input jacks

designed to take unbalanced line signals. You may

connect high-level signal sources such as

synthesizers, mixer outputs, the recording output

of a guitar amp, and the like here.

D/A Out: These two analog outputs route out the left and right channels of the signal that

is inserted into the digital input of the DI-PORT. This is a direct out circuit, meaning that

the Volume knob has no influence on the level of this signal.

Monitor Out: These analog outputs route out a mix of the digital and analog input signals

of the DI-PORT. Adjust the balance of signals via the Mix knob located on the front panel.

3.2 Digital Interface

The DI-PORT‘s is connected to digital circuits via an interface designed to handle coaxial

and optical S/PDIF formats.

Digital Out: Both channels of the converted

A/D input signal are routed out here.

Connect this port to the digital input of your

audio card.

Digital In: Digital input designed to convert the digital output signal of your computer into

an analog signal. The converted D/A signal is patched directly to the D/A Out port (see

above). In addition, this signal is also routed to the Monitor Out and can be blended in

with the analog input signal via the Mix knob. Connect Digital In to the digital output of

your audio card.

44.1 / 48 Button: This button selects a sampling frequency of 44.1 or 48 kHz when the 

DI-PORT is operated exclusively as a A/D converter or is not receiving a valid digital input

signal. If on the other hand a valid digital signal is inserted into the digital input, the 

DI-PORT adjusts its sampling rate so that it corresponds to that of the incoming signal.

Auto/Master Button: If you set the DI-PORT to Master, the device will operate with its

internal clock and its sampling frequency is determined by the 44.1/48 button. Set to Auto

mode, the DI-PORT is locked into sync with the signal routed into its digital input. The

device automatically adjust its sampling frequency accordingly.

Locked: This LED lights up as soon as the DI-PORT recognizes a valid digital signal at its

S/PDIF input.

MindPrint DI-PORT

GAIN A

5

0

3

2

4

1

6

7

8

XLR = MIC

JACK = LINE

ANALOG IN A

PEAK

ANALOG IN B

2

1

SIGNAL

XLR = MIC

JACK = LINE

PEAK

SIGNAL

FRONT

AIN A

5

4

6

7

8

48 V

ANALOG IN    DIGITAL IN

GAIN B

ANALOG IN B

INPUTS

MIX

5

0

3

2

4

1

6

7

8

OFF

ON

XLR = MIC

JACK = LINE

PEAK

SIGNAL

REAR

LOCKED

48 V

ANALOG IN    DIGITAL IN

PHONES

VOLUME

MIX

5

0

3

2

4

1

6

7

8

MONITOR

OFF

ON

Summary of Contents for DI-PORT

Page 1: ...NUAL FRONT GAIN A 5 0 3 2 4 1 6 7 8 XLR MIC JACK LINE ANALOG IN A 48 V ANALOGIN DIGITALIN PHONES VOLUME PEAK GAIN B ANALOG IN B INPUTS MIX 5 0 3 2 4 1 6 7 8 MONITOR 5 0 3 2 4 1 6 7 8 OFF ON SIGNAL XLR MIC JACK LINE PEAK SIGNAL REAR ...

Page 2: ...alists highly experienced hands in tube audio mixer and digital technology These sound gurus invested all of their talents and skills to do justice to the wishes of numerous recording freaks all over the world Computer aided recording has achieved a very high standard over the last couple of years while prices have dropped to near universally affordable levels Unfortunately the potential of this e...

Page 3: ... Applications 9 4 1 The Purpose of the DI PORT 9 4 2 The DI PORT as a High end Audio Card 9 4 3 Converter for Digital Recorders 9 4 4 Live Recording 9 4 5 Analog Microphone Preamplifiers 10 5 Background Information 10 5 1 Disadvantages of Conventional Audio Cards 10 5 2 What Will 24 Bits Do for You 10 6 Block Diagram 30 7 Technical Data 31 MindPrint DI PORT FRONT GAIN A 5 0 3 2 4 1 6 7 8 XLR MIC J...

Page 4: ...r recordings without all the hassle that you may have experienced with conventional converters 1 3 A D and D A Converters After the premium preamp section has worked its audio magic the signal is converted so that it can be introduced into the digital domain The converted signal is routed out via the digital outputæunsurprisingly labeled Digital Outælocated on the rear panel of the device This out...

Page 5: ...ect headphones here 3 Rear Panel of the DI PORT 3 1 Analog Connections Analog In These are 6 3 mm 1 4 input jacks designed to take unbalanced line signals You may connect high level signal sources such as synthesizers mixer outputs the recording output of a guitar amp and the like here D A Out These two analog outputs route out the left and right channels of the signal that is inserted into the di...

Page 6: ...ter wall wart 4 Applications 4 1 The Purpose of the DI PORT Nowadays the computer is the hub of the home recording studio The majority of functions found on professional devices of yesteryear exorbitantly expensive just a decade ago are now standard features in contemporary hard disk recording systems Fortunately ever more processing operations can be executed in the digital domain which significa...

Page 7: ...ill By design converters and analog components are installed in the interior of the computer s housing which means that they are exposed to the considerable electromagnetic interference prevailing inside a computer casing as well as interference transmitted via the data bus and power supply This is why you should choose an audio card equipped with a digital interface or a pure digital I O card tha...

Page 8: ... 1 kHz 1 kHz sine wave 0 09 40 dBFS 0 01 20 dBFS 0 005 8 dBFS 0 006 0 1 dBFS LINE IN fs 48 kHz 1 kHz sine wave 0 12 40 dBFS 0 011 20 dBFS 0 0028 8 dBFS 0 008 0 1 dBFS MIC IN fs 48 kHz 1 kHz sine wave 0 1 40 dBFS 0 012 20 dBFS 0 005 8 dBFS 0 009 0 1 dBFS FREQUENCY RESPONSE A D fs 44 1 48 kHz LINE IN 20 Hz 20 kHz 0 1 dB 0 dB 0 1 dBFS MIC IN 20 Hz 20 kHz 0 1 dB 20 dB 0 1 dBFS FREQUENCY RESPONSE D A f...

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