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Network I/O Stagebox SB 32.24 User Guide

Contents

Gain Compensation

Each stagebox Mic/Line input has two transmit channels that can be subscribed to in the Dante

network.

When connected to an SSL console or the Network I/O controller app the main and compensated

channels show as two separate devices. Only the Main device offers control of the Stagebox gain

settings and other controls. The compensated device can not be "owned" or have any audio

functions changed.

When an SSL Network I/O Stagebox is connected to the Dante network it will appear in the

Connected Devices list as two separate devices.

One device provides the gain-dependant (uncompensated) signal, and the other device is a

gain-compensated split.

Only a device which subscribes to the gain-dependant audio can own and have control of the

Stagebox gain settings and other controls. The first (SSL) console to route to an uncompensated

channel gets ownership automatically, the Compensated device can never own or have control.

The Compensated device's level is controlled in the Stagebox itself, so any Dante device can receive

the compensated signal. It does not have to be an SSL console.

Gain Compensation works by applying a digital trim offset, which is the negative equivalent of the

analogue gain change value.

The

Gamma point

is the value at which the analogue gain equals a digital trim value of 0 dB, i.e.

there is no digital trim applied. Digital trim will be applied when the analogue gain level is above or

below the Gamma point. The Gamma point is indicated on the SB 32.24 input GUI as

The owner of an input has access to the Gain Compensation

RECALIBRATE

button. Pressing and

holding the

RECALIBRATE

button will reset the

Gamma point

When the preamp is in

Line

mode, pressing and holding

RECALIBRATE

will move the

Gamma

point

to the current position of the analogue gain knob. This means that the analogue gain value

now equals a digital trim value of 0 dB and no digital trim is applied.

When the preamp is in

Mic

mode, pressing and holding

RECALIBRATE

will move the

Gamma

point

to 10 dB below the current position of the analogue gain knob. This feature has been designed

to protect the compensated signal against digital clipping in the event that the analogue gain control

is drastically reduced.

This means that the initial digital trim value is -10 dB, as the analogue gain value is 10 dB above the

Gamma point. Pressing the

3 dB buttons raises or lowers the

Gamma point

by 3 dB.

Note: An SB 32.24 can have the Main device and the Compensated device connected to

two separate networks. This isolates the gain-dependant and gain-compensated outputs,

and renders the two networks invisible to each other.

Page 17 of 25

Содержание SB 32.24

Страница 1: ......

Страница 2: ...tive owners and are hereby acknowledged No part of this publication may be reproduced in any form or by any means whether mechanical or electronic without the written permission of Solid State Logic Oxford OX5 1RU England As research and development is a continual process Solid State Logic reserves the right to change the features and specifications described herein without notice or obligation So...

Страница 3: ...Gain dependant source and gain compensated splits available to both consoles SFP s fitted 10 Gain dependant source available to master console Gain compensated split available to secondary console 10 Connecting a PC 11 Network Connection 11 SSL Network I O Controller PC application 11 IP Address 11 Linking Unlinking Networks A and B 12 Software Control 13 The GUI 13 Network View 13 Inputs Outputs ...

Страница 4: ...User Guide Contents Appendix C Safety Notices 23 General Safety 23 Installation Notes 23 Power Safety 24 For EU 24 Environmental Declaration 24 RoHS notice 25 For USA 25 Electromagnetic Compatibility 25 Environmental 25 Page 4 of 25 ...

Страница 5: ...s two user specifiable SFP ports which provide network extension or support a second independent Dante network complete the professional hardware requirement Key Features Interface between studio stage recording area and IP audio networks using Dante SSL SuperAnalogue TM Studio Grade preamps Gain compensated Dante Split available on the same or on a separate B network Device and parameter ownershi...

Страница 6: ...lashing red PSU LED indicates the failure of PSU 1 A static red PSU LED indicates a failure of PSU 2 Channel LEDs Analogue signal LEDs SIG are green above 42 dBFS and red at 0 1 dBFS clipping 48V ATT indicates Phantom Power and or Attention depending on red green or flashing combinations as follows Red phantom power on Green flashing channel Attention active Green red flashing phantom power on cha...

Страница 7: ...in use N A N A H W N A All hardware fans etc good Hardware fault check software AES IN 3 4 ACT Analogue inputs 27 28 in use AES inputs 3 4 in use N A N A NET A N A Dante network A good Dante A Pri Fault Dante A Sec Fault AES IN 5 6 ACT Analogue inputs 29 30 in use AES inputs 5 6 in use N A N A NET B N A Dante network B good Dante B Pri Fault Dante B Sec Fault AES IN 7 8 ACT Analogue inputs 31 32 i...

Страница 8: ...k Link LEDs are OFF and isolated from each other In this mode Network A transmits uncompensated audio and receives audio for the analogue and AES outputs and also control data and Network B transmits the compensated audio only Note that they have to be synchronised to the same clock source Status Reset DHCP A B Network Link LED indicates unit is configured to connect internal A and B networks Off ...

Страница 9: ... available to the master console Stagebox outputs are available to the master console Gain dependant source and gain compensated splits available to both consoles no SFP s fitted external switch connected In this mode both the gain dependant and the gain compensated splits are available to both consoles no SFP s fitted external switch connected Input ownership and stagebox outputs are available to...

Страница 10: ...onsole Gain dependant source available to master console Gain compensated split available to secondary console In this mode only the gain dependant split is available to the master console Only the gain compensated split is available to the secondary console Input ownership and stagebox outputs are only available to the master console Please note Secondary console must be synchronised to the same ...

Страница 11: ...o if communications are not working check Windows Firewall settings You may need to change your computer s TCP IP settings to match your Dante subnet Network configuration should be done before opening the application subsequent changes to network settings may require Network I O Controller to be restarted Set your computer to Never Sleep to maintain communication For additional information see Da...

Страница 12: ...s as required In Dante Controller click on the Device View tab Double click on the main device s IP address NOT the Split output s IP address Click on the Network Config tab From the Switch Configuration drop down select Network A B Linked or Network A B Unlinked If the networks are Unlinked only the gain compensated splits will be available from network B and only the gain dependant audio from ne...

Страница 13: ...Network I O Stagebox SB 32 24 User Guide Contents Software Control The GUI The application window is divided into five sections Network View Page 13 of 25 ...

Страница 14: ... mic preamp pad Mic Line select toggles the appropriate input gain range and impedance for mic or line level sources ATT Attention toggles the hardware front panel LED for fast identification of a physical input connector Multiple channels can have Attention active All attention signals on a stagebox can be cleared via the Setup window Level Meter shows the signal level for the selected channel A ...

Страница 15: ...The View Outputs window shows a reduced option set Output level meters are shown the Mute button s function is as before The keys and combinations are mapped to the PC keyboard For example pressing ALT UP on the keyboard will increase the gain by 3 dB Page 15 of 25 ...

Страница 16: ...s To become the Stagebox owner press and hold the STAGEBOX OWNERSHIP button in the SB 32 24 s GUI Detail View The Stagebox owner is listed in cyan beside this button To become the owner of ALL inputs press and hold INPUT OWNERSHIP To become the owner of one or more specific inputs first tap Inputs to the right of the SB 32 24 s Detail View Tap on the desired input and press EDIT SETTINGS Then pres...

Страница 17: ...the analogue gain change value The Gamma point is the value at which the analogue gain equals a digital trim value of 0 dB i e there is no digital trim applied Digital trim will be applied when the analogue gain level is above or below the Gamma point The Gamma point is indicated on the SB 32 24 input GUI as γ The owner of an input has access to the Gain Compensation RECALIBRATE button Pressing an...

Страница 18: ...device must have a unique name if a name is duplicated it will be appended with a number IP Config Each device requires a DHCP or fixed IP address The primary and secondary ports must be on separate networks or VLANs Device Info tab shows the device IP address Device Device View menu allows setting of DHCP or fixed IP address The device will resolve to a link local address if it is set to DHCP and...

Страница 19: ...Parameter Value Notes Depth 456 mm 494 mm excluding handles incl handles Height 5 RU 220 mm Width 431 mm 483 mm Unit Width Ex Rack Ears Including rack ears Note Rack Ears not removeable Weight 14 kg Power 100 240 V 3 0 1 5 A 170 W max Boxed size 660 x 620 x 400 mm Boxed weight 16 kg Page 19 of 25 ...

Страница 20: ...y 124 dB Usable Dynamic Range 115 dB Mic mode 0 dBFS A weighted filter 22 kHz bandwidth Typically 116 dB Input Impedance 2 3 kΩ 10 kΩ Mic Line Selectable per channel CMRR 70 dB 90 dB Mic mode 20 Hz 20 kHz 0 dBu Mic mode 1 kHz 0 dBu Crosstalk 75 dB 90 dB 20 Hz 20 kHz 1 kHz THD N 0 01 Mic mode 20 Hz 20 kHz 1 dBFS 22 kHz bandwidth Phantom Power Mic Input 48 V 4 V 10 mA Selectable per channel Pad Mic ...

Страница 21: ... Usable Dynamic Range 116 dB 0 dBFS A weighted filter 22 kHz bandwidth Typically 117 dB Crosstalk 90 dB 105 dB 20 Hz 20 kHz 0 dBFS 1 kHz 0 dBFS THD N 0 01 20 Hz 20 kHz 1 dBFS 22 kHz bandwidth Typically 0 004 Output Symmetry 40 dB 20 Hz 20 kHz Typically 50 dB Sample Rates 44 1 48 88 2 or 96 kHz Resolution 24 bit Measurement Parameters Sample Rate 96 kHz Operating Level 24 dBu 0 dBFS Reference frequ...

Страница 22: ...oupled Sample Rates 44 1 48 88 2 or 96 kHz 176 kHz or 192 kHz with sample rate converters enabled Sample Rate converters Yes Selectable per AES channel pair Resolution 24 bit Digital Outputs Parameter Value Notes Output Impedance 110 Ω Transformer coupled Sample Rates 44 1 48 88 2 or 96 kHz Resolution 24 bit Page 22 of 25 ...

Страница 23: ...fied personnel Seek immediate service if I The unit has been exposed to moisture II The unit has been dropped III The unit does not operate normally 12 Do NOT modify this unit alterations may affect performance safety and or international compliance standards 13 SSL does not accept liability for damage caused by maintenance repair or modification by unauthorised personnel Installation Notes 1 When...

Страница 24: ...luttes en stikkontakt med jord som giver forbindelse til stikproppens jord FIN Laite on liitettävä suojamaadoituskoskettimilla va rustettuumpistorasiaan NOR Apparatet må tikoples jordet stikkontakt SWE Apparaten skall anslutas till jordat uttag ATTENTION This equipment must be Earthed Refer to manual for installation instructions CAUTION Disconnect all power sources before removing any panel s No ...

Страница 25: ...es such as radios and televisions and will void your FCC authorisation to use this product in the USA 3 Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipm...

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