Mic-Line Input Component

Mic/Line Input Component

The Mic-Line Input card (High Performance or Standard) provides line-level input for devices with line-level outputs, and inputs for microphones. It is typically installed in an I/O Frame, but can be installed in the Core. The Line Input card converts the analog input signal to a processed digital and provides software controls before and after the convertor. Connections are made using four three-terminal Euro style connectors. There are two Mic/Line In components in Q-SYS Designer, High Performance and Standard.

If a Mic/Line In card is used in a redundant I/O Frame or Core, wire the inputs in parallel with the corresponding card in the redundant I/O Frame or Core. For more details on redundancy and Mic/Line In cards, refer to the Redundancy topic.

Type 2 Hardware

Type 2 hardware provides new cables and connectors between the I/O cards and main boards in Cores and I/O Frames. Due to this change, the Type 2 hardware is not physically compatible with the older hardware. You can still integrate the new I/O Frames and Cores in the same system with older hardware, but the I/O cards are not interchangeable. Type 2 hardware can be identified by a yellow label on the back of the Core and I/O Frame, and the bottom of the I/O cards.

Controls

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 0 dBFS 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 (+48VDC) to the microphone.	Off / On
Preamp Sensitivity (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 without actually clipping. You can select the field and enter the value you want, or click and drag the number to the value. Varies inversely with the Preamp Gain.	Default = 21 Range = 27 to -56
Preamp Gain (dB)	The amount of Gain applied to the incoming analog signal level. Varies inversely with the Preamp Sensitivity.	Default = 6 Range = 0 to 83

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 0 dBFS 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 (+48VDC) to the microphone.

Off / On

Preamp Sensitivity

(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 without actually clipping.

You can select the field and enter the value you want, or click and drag the number to the value.

Varies inversely with the Preamp Gain.

Default = 21

Range = 27 to -56

Preamp Gain

(dB)

The amount of Gain applied to the incoming analog signal level. Varies inversely with the Preamp Sensitivity.

Default = 6

Range = 0 to 83

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

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 LED	This LED changes color to indicate the current status of the Core. See Status for the meanings of the various colors.	N / A
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. NOTE: These conditions are examples, and may not be applicable to all components with a Status field. 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

Control

Function

Default / Range

Status LED

This LED changes color to indicate the current status of the Core. See Status for the meanings of the various colors.

N / A

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.

NOTE: These conditions are examples, and may not be applicable to all components with a Status field.

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

Control Pins

The available Control Pins depend on settings in Properties. Each channel on the Mic/Line Input card has the following Control Pins with the exception of Status.

Pin Name	Value	String	Position	Pins Available
Clip	0 1	false true	0 1	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
Mute	0 1	unmute mute	0 1	Input / Output
Phantom Power	0 1	disable enable	0 1	Input / Output
Preamp Gain (dB)	0 to 60	0dB to 60dB	0.000 to 1.00	Input / Output
Preamp Sensitivity (dBu)	+21 to -39	+21dBu to -39dBu	0.000 to 1.00	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

Pin Name

Value

String

Position

Pins Available

Clip

false

true

Output

Clip Hold

false

true

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

normal

invert

Input / Output

Mute

unmute

mute

Input / Output

Phantom Power

disable

enable

Input / Output

Preamp Gain

(dB)

0 to 60

0dB to 60dB

0.000 to 1.00

Input / Output

Preamp Sensitivity

(dBu)

+21 to -39

+21dBu to -39dBu

0.000 to 1.00

Input / Output

Status

OK (green)

Compromised (orange)

Fault (red)

Unknown (red)

Updating (blue)

0.250

0.500

0.750

1.00

Output

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