I/O-22 Mic/Line In Component

The Mic/Line In provides line-level input for devices with line-level outputs and microphones. The Mic/Line In converts the analog input signal to a digital signal and provides software controls before and after the convertor. Connections are made using two three-terminal Euro style connectors.

Controls

The controls listed below are divided into sections to match the Control Panel sections.

Once you establish the initial settings for a component, you can save those settings, along with all the other component's settings, in a Snapshot.

Pilot Tone

Control

Function

Default/Range

Frequency

(Hz)

Sets the frequency of the Pilot tone. One control for each channel.

Default = 22k

Range = 10 to 22k

Level

(dB)

Sets the level for the Pilot tone. One control for each channel.

Default = -60

Range = -100 to 0

Analog

Control

Function

Default/Range

Peak Input Level

(dBFS)

Meters for each channel indicating the peak analog input level. The measurement is taken after the A/D converter, but before the Digital Gain. Use this meter in conjunction with the Max Input Level to obtain an input signal as close to 0dBFS as possible without actually clipping.

Default = N/A

Range = -100 to 20

Clip

Red LED indicating if the signal is being clipped.

Off/On

Clip Hold

Holds the clip indication until manually cleared.

Off/On

Phantom Power

Toggle turning on and off phantom power to the microphone.

Off/On

Max RMS Input Level

(dBu)

The maximum analog level, coming into the Mic/Line Input card, that can be converted without clipping. This level is typically set slightly higher than the source's output level, so that the Peak Input Level reads about 0 dBFS with.

Default = 21

Range = 27 to -55

Digital

Control

Function

Default/Range

Invert

Toggle button to invert the digital output of the Mic/Line input card.

Off/On

Mute

Mutes the output signal.

Off/On

Gain

(dB)

Controls the Gain of the digital output signal.

Default = 0

Range = -100 to 20

Status

Control

Function

Default/Range

Status

Displays the current status of the card both in text and color. The following is a list of possible status colors, and some example conditions.

OK – Green – (0) – Audio is good, hardware is good.

Compromised – Orange – (1) – Audio is good but a redundancy mechanism is active (one LAN down but the other is still up) or a non-fatal hardware problem exists (fans too slow, temperature higher than expected, etc.)

Fault – Red – (2) – Audio is not passing, or hardware is malfunctioning or mis-configured (amplifier power off, audio streams broken, wrong type of I/O Card installed, loudspeaker short circuit, etc.)

Missing – Red – (3) – A piece of hardware, defined in the design, has not been discovered. Audio is not passing through that piece of hardware.

Initializing – Blue – (5) – In the process of firmware, configuration update, and design start. Audio is obviously bad.

Not Present – Gray – A virtual component in the design, that is designated as Dynamically Paired, and Not Required ,has no hardware assigned to it.

N/A

Properties

There are no adjustable properties for the I/O-22 Mic/Line In card. However, when the component is selected, you can select some of the Properties available for the entire IO/22 component. For an explanation of these properties refer to the IO/22 Status topic.

Control Pins

The available Control Pins depend on settings in Properties.

Pin Name

Value

String

Position

Pins Available

Clip

0

1

false

true

0

1

Input / Output

Clip Hold

0

1

false

true

0

1

Input / Output

Digital Level

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Output

Gain

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Input / Output

Invert

0

1

normal

invert

0

1

Input / Output

Max Level

27.0 to -55

27.0 to -55

0 to .988

Input / Output

Mute

0

1

unmute

mute

0

1

Output

Phantom Power

0

1

disable

enable

0

1

Input / Output

Status

0

1

2

3

4

OK (green)

Compromised (orange)

Fault (red)

Unknown (red)

Updating (blue)

0

0.250

0.500

0.750

1.00

Output

Pilot Tone Frequency

10.0 to 22,000

10 Hz to 22 kHz

0.000 to 1.00

Input / Output

Pilot Tone Level

-100 to 20

-100 dB to 20 dB

0.000 to 1.00

Input / Output


 

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