Studio Technologies Model 394 GPI Interface. User Guide

Studio Technologies Model 394 GPI Interface

Specifikace

Aplikace

• Purposes: transport of contact closure indication in broadcast, theater, industrial, and aerospace applications
• Technology: utilizes Dante audio-over-Ethernet technology
• Síťová audio technologie:
• Typ: Dante audio-over-Ethernet
• Podpora AES67-2018: ano, volitelné zapnutí/vypnutí
• Podpora Dante Domain Manager (DDM): ano
• Bit Depth: up to 24 bits
• Sample Frekvence: 48 kHz
• Pull-Up/Down Support: ne
• Dante Channels: 2 receiver (input) and 2 transmitter (output)
• Dante Flows: 2 receiver (input) and 2 transmitter (output)
• Nominální vstupní a výstupní úroveň: –20 dBFS

Síťové rozhraní

• Type: 100BASE-TX, Fast Ethernet per IEEE® 802.3u (10BASE-T and 1000BASE-T (GbE) not supported)
• Power-over-Ethernet (PoE): per IEEE 802.3af
• Přenosová rychlost: 100 Mb/s (10 Mb/s a 1000 Mb/s není podporováno)
• Pass-Through Inputs: 2
• Applications: can be configured to digitally sum Dante receive (input) channel data with 20 kHz sine wave tones on Dante transmitter (output) channels
• Type: unity gain, Dante receiver (input) to Dante transmitter (output)
• Frequency Response: full Dante bandwidth
• Tone Output – In-Band: 2
• Type: Contained within the Dante transmitter (output) channels
• Frequency & Type: 20 kHz, sine wave
• Přesnost frekvence: <10 ppm
• Zkreslení: <0.0001 %
• Úroveň: –20 dBFS
• Function Activation – GPI Inputs: 2
• Type: active low, 3.3 mA maximum, input pulled up to 3.3 volts DC via 1.0 k ohm resistor
• Function Activation – UDP Commands:
• Source: Network commands received via Ethernet interface

Konektory

• GPI Inputs: 4-pin detachable terminal block
• (0.150-inch/3.81 mm centers)
• Ethernet: RJ45 jack
• Firmware Update: USB type A receptacle

Zdroj napájení

• Power-over-Ethernet (PoE): třída 2 (nízký výkon, ≤6.49 wattů) podle IEEE 802.3af
•  Configuration: requires Studio Technologies STcontroller personal computer application
• Software Updating: USB flash drive supports updating of main firmware (embedded software); Dante interface firmware updated via Ethernet interface

Prostředí

• Operating Temperature: 32 to 122 degrees F (0 to 50 degrees C)
• Storage Temperature: –40 to 158 degrees F (–40 to 70 degrees C)
• Vlhkost: 5 až 95 %, nekondenzující
• Nadmořská výška: není charakterizována

Rozměry (celkové):

• šířka 4.1 palce (10.4 cm)
• 1.2 palce na výšku (3.1 cm)
• hloubka 4.9 palce (12.5 cm)
• Mounting Options: intended for tabletop applications
• Weight: 0.55 pound (0.25 kg)

Specifikace a informace obsažené v této uživatelské příručce se mohou bez upozornění změnit.

Zavedení

The Model 394 GPI Interface allows two contact closures associated with a piece of electronic equipment, or the status of two pushbutton switches, to be “extended” over an Ethernet network. The unit uses in-band 20 kHz sine wave audio tones and the Dante audio-over-network protocol to transport the status of its two GPI functions. Installation is simple and confirmation is easy using the ST controller software application. The compact, lightweight unit uses the power-over-Ethernet (PoE) protocol for its operation power.

Aplikace

• The Model 394 is designed for a variety of applications where the status of a contact closure or user-operated switch needs to be transported within a facility or over an Ethernet network. The contact Figure 1. Model 394 GPI Interface front and back views will often originate from an electromechanical or solid-state relay associated with a piece of electronic equipment. It may also be provided by a mechanical switch that changes state in response to a particular situation or user action.
• The Model 394’s GPI functions can be used for broadcast or theater applications where an “on air” or “event in progress” status indication needs to be transported or distributed. It can also find use in industrial applications where the state of a contact closure needs to be transported within a geographically dispersed facility. As a Dante audio-over-Ethernet device, the status of a contact closure will be distributed over an entire associated Ethernet data network. This means that the state of the GPI functions will be available, whether in the same room or on the opposite sides of a university or business campus. And there’s certainly no reason that the Model 394’s two audio channels can’t be transported literally around the world using audio transport facilities. (Conversion from Dante to the specific type of audio transport would, of course, be required.)

Vlastnosti

• The Model 394 allows two contact closure inputs to be connected. Two pushbutton switches, located on the unit’s front panel, can also be used to control the state of the GPI functions. Bi-color LEDs are provided within the pushbutton switches to indicate the real-time status of the GPI functions. The ST controller application supports configuration, monitoring, and control of a Model 394 using a personal computer running the Windows or macOS operating systems.
• A unique Model 394 feature is its ability to pass Dante audio from input-to-output with the 20 kHz GPI status tones added as applicable. Multiple LEDs provide an indication of the unit’s operating status. The unit’s Ethernet connection is used to provide both data and power by way of the power-over-Ethernet (PoE) standard. The unit utilizes an extruded-aluminum enclosure that is both lightweight and extremely rugged.

Dante Audio-over-Ethernet

• The Model 394 GPI Interface utilizes the capabilities of Dante audio-over-Ethernet media networking technology to transport status indications over standard Ethernet networks. As a Dante-compliant device, the Model 394’s two Dante transmitter (output) channels can be assigned (routed) to destination devices using the Dante Controller software application.
• The Model 394 transmits the status of a GPI signals using 20 kHz sine wave audio tones that have a sample rate of 48 kHz and a bit depth of up to 24. These tones are “in-band” (carried within the Dante audio path) and are routed (Dante subscribed) to Dante-compliant receiving devices using the Dante Controller application. In many applications, a Studio Technologies Model 395 GPO Interface will be used to receive these 20 kHz tones and convert them to contact closures.
• Other products from Studio Technologies are also compatible. For example, the Model 391 Dante Alerting Unit can receive a 20 kHz tone and trigger both audible and visual indicators. The Model 392 Visual Alerting Unit mounts in standard electrical boxes and will light its visual display in response to a 20 kHz tone signal.
• Other products, such as the Studio Technologies Model 348 Intercom Station or selected units from the Model 370-series of intercom belt packs, can have their call light functions triggered by reception of 20 kHz tones. Dante-compatible devices from other manufacturers should also interconnect successfully.
• The Model 394 also provides a special “pass through” function. This allows full-bandwidth audio signals that arrive via Dante receiver (input) channels to be passed-through (directly routed at unity gain) to the unit’s Dante transmitter (output) channels. The GPI function’s 20 kHz sine wave tones are summed (added or combined) with the audio input signals, within the digital domain, and then output by way of the unit’s Dante transmitter (output) channels.

Ethernetová data a PoE

• The Model 394 connects to an Ethernet network using a 100 Mb/s twisted-pair (UTP) Ethernet interface. As with all Dante devices, the Model 394 is compatible with standard Ethernet networking equipment. The unit’s physical network interconnection is made by way of RJ45 connector that supports Auto MDI/MDI-X. Two LEDs, associated with the RJ45 connector, display the status of the network connection.
• The Model 394’s operating power is provided by way of the Ethernet interface using the IEEE® 802.3af Power-over-Ethernet (PoE) standard. This allows fast and efficient interconnection with an associated data network. To support PoE power management, the Model 394’s PoE interface reports to the power sourcing equipment (PSE) that it’s a class 2 (low power) device. If a PoE-enabled Ethernet port can’t be provided by the associated Ethernet switch a low-cost PoE midspan power injector can be utilized.

Nastavení, konfigurace a provoz

• Setup, configuration, and operation of the Model 394 is simple. An RJ45 jack, located on the unit’s back panel, is used to interconnect, by way of a standard Ethernet patch cable, to a port on a PoE-enabled network switch. This connection provides both network data and power. Two contact closures can be connected to the Model 394’s GPI inputs using a 4-position detachable screw terminal block. The two inputs are “pulled up” to 3.3 volts DC and respond to a closure (short) being present.
• The ST controller personal computer software application is used to configure several Model 394 operating parameters. ST controller, with versions available that are compatible with the Windows and macOS  operating systems, provides a fast and simple means of observing and revising the unit’s operating parameters. In addition, ST controller allows the status of the GPI inputs to be monitored using “virtual” LEDs. Two software-controlled pushbutton switches, provided by ST controller, allow the status of the GPI functions to be controlled.
• In many applications, external control closures will be connected by way of the unit’s GPI inputs. However, two pushbutton switches, located on the front panel, also allow control of the GPI functions. These switches can be useful during installation and troubleshooting situations. They can also be utilized in selected applications, allowing operators to directly control the status of GPI functions. LEDs within the pushbutton switches provide status indications of the GPI functions, whether controlled by external contact closures, the front-panel pushbutton switches, or ST controller. Other LEDs display the status of the network connection and operating power.

Budoucí schopnosti a aktualizace firmwaru

• The Model 394 was designed so that its capabilities and performance can be enhanced in the future. A USB connector, located on the unit’s back panel, allows the application firmware (embedded software) to be updated using a USB flash drive. To implement its Dante capability the Model 394 uses Audinate’s Ultimo™ integrated circuit. The firmware in this integrated circuit can be updated by way of the unit’s Ethernet connection, helping to ensure that its Dante capabilities remain up to date.

Začínáme

Co je zahrnuto

• Included in the shipping carton are a Model 394 GPI Interface and instructions on how to obtain an electronic copy of this guide. As a device that is Power-over-Ethernet (PoE) powered, no external power source is provided. In most applications an Ethernet switch with PoE capability will be utilized. If that’s not available a PoE midspan power injector can be used. A 4-position detachable terminal block plug will be included. (The terminal block plug is Studio Technologies part number 01434.) It will be inserted into the Model 394’s 4-position header connector. The dimension between the connector pins (“centers”) is 0.150 inches (3.81 millimeters) which is an industry standard.

Spojení
Signal interconnections will be made using two connectors that are located on the back of the Model 394’s enclosure. An Ethernet data connection with Power-over-Ethernet (PoE) capability will be made using a standard RJ45 patch cable that  terminates with an RJ45 plug. One or two contact closures will be connected by way of the 4-position detachable terminal block plug.

Ethernetové připojení s PoE
A 100BASE-TX Ethernet connection that supports Power-over-Ethernet (PoE) is required for Model 394 operation. This one connection will provide both Ethernet data and power for the Model 394’s circuitry. A 10BASE-T connection is not sufficient and a 1000BASE-T (GigE) connection is not supported unless it can automatically “fall back” to 100BASE-TX operation. The Model 394 supports Ethernet switch power management, enumerating itself as a PoE class 2 device.

The Ethernet connection is made by way of a RJ45 connector that is located on the back of the Model 394’s enclosure. This allows connection by way of a standard cable-mounted RJ45 plug. The Model 394’s Ethernet interface supports auto MDI/MDI-X so that a “cross-over” or “reversing” cable will never be required.

Ethernetové připojení bez PoE
As previously discussed, the Model 394 was designed such that the Ethernet connection will provide both data and Power-over-Ethernet (PoE) power. There may be situations where the associated Ethernet switch does not provide PoE power. In such cases, an external PoE midspan power injector can be used. If the selected midspan power injector is 802.3af-compatible, it should function correctly. Midspan units are available from a variety of sources, including many online retailers.

Vstupy GPI

• A 4-position detachable terminal block plug is used to interface one or two external contacts with the Model 394’s GPI circuitry. From the factory the Model 394’s terminal block plug will be mated with the unit’s “header” connector but it can be temporarily removed if desired during the installation process. The terminal block plug will remain mated with the header connector strictly using friction; there is no other mechanical locking method utilized.
• The terminal block plug allows interconnecting wires to be clamped to each terminal by tightening a flat-blade screw. An Xcelite ® “greenie” flat blade screwdriver (Xcelite R3323) is an excellent tool for this task. The blade of this screwdriver has a width of approximately 0.095 inches (2.4 millimeters) and a tip thick-ness of approximately 0.020 inches (0.6 millimeters). Wires in the range of 16 to 28 AWG are compatible. The insulation strip length is recommended to be 0.25 inches (6.35 millimeters) with a recommended tightening torque of 2.2 pound-inches (0.25 newton-meters).
• Each of the Model 394’s two GPI (general-purpose) inputs has a common connection (labeled –) and a DC-voltage-biased active (labeled +) connection. The latter is 3.3 volts DC supplied by way of a 1000-ohm (1k ohm) resistor. This provides a “pull up” current of 3.3 milliamperes. In most cases, a normally-open (not shorted) contact will be connected to the + and – terminals of a GPI input. This will cause the Model 394 to recognize an active GPI when a contact closure is present between the + (DC-biased) lead and the – (common) lead. By default, both GPI inputs are configured for momentary operation. In this way, whenever a GPI input’s + lead is connected to its – lead the unit will recognize it as an active GPI input.
• A configuration selection allows each GPI input to be independently configured for latching operation. If this mode is selected, a Model 394 GPI input will change state each time a + lead is connected to its – lead.
• Note that it’s certainly acceptable for a normally-closed (shorted) contact to be connected to a GPI input. Configuring the GPI mode to be momentary would be required, and in this case, the Model 394 will recognize an active GPI all the time except when the contact changes to its open state. A configuration choice to recognize a normally-closed (shorted) contact as the normal condition is not provided.

Umístění jednotky

• Once the Ethernet and GPI connections have been made, the Model 394 can be placed in its final location. This will typically be a shelf or other flat surface, often within a rack enclosure. The Model 394 unit has a weight (mass) of 0.55 pounds (0.25 kilograms) which makes it suitable for vertical mounting with adhesive-backed hook-and-loop fastener material.

Konfigurace Dante
Correct Model 394 operation requires that one or more Dante-related parameters be correctly configured. The configuration settings will be stored in non-volatile memory within the Model 394’s circuitry. Configuration will typically be done with the Dante Controller software application which is available for download free of charge at getdante.com Versions of Dante Controller are available to support the Windows and macOS operating systems. The Model 394 uses the UltimoX2 integrated circuit to implement its Dante architecture. The Model 394’s Dante interface is compatible with the Dante Domain Manager™ (DDM) software application. Refer to the DDM documentation, available from Adnate, for details on which Model 394 and related parameters may have to be configured.

Směrování zvuku

• The Model 394 has two Dante transmitter (output) and two Dante receiver (input) channels that are associated with the unit’s Dante interface. The Dante transmitter (output) channels would contain the 20 kHz sine wave signals that are active when the Model 394’s GPI inputs are active. These Dante transmitter (output) channels would be subscribed (routed) using the Dante Controller application to the receiver (input) channels on other devices that would utilize the 20 kHz signals.
• Often this would be the Dante receiver (input) channels on Studio Technologies Model 395 GPO Interface units. Other uses might include interfacing with digital signal-processor (DSP) units that include Dante support.
• In some cases, one or two transmitter (output) channels on a designated Dante device will be subscribed (routed) to the Model 394’s Dante receiver (input) channels. These transmitter channels would typically be used to supply the Model 394 with audio signals that need to be re-transmitted (repeated) using the Model 394’s Dante transmitter (output) channels. In this case, the audio signals from the Dante receiver (input) channels would be combined (mixed or summed) with the 20 kHz sine wave signals and output by way of the Dante transmitter (output) channels.
• Note that the Dante Controller application may use the term “subscription” to describe the routing of a transmitter flow (a group of up to four output channels) to a receiver flow (a group of up to four input channels).

Názvy jednotek a kanálů

• The Model 394 has a default Dante device name of ST-M394- and a unique suffix. The suffix identifies the specific Model 394 that is being configured. The suffix’s actual alpha or numeric characters, or both, relate to the MAC address of the unit’s UltimoX2 integrated circuit. The unit’s Dante transmitter (output) channels have default names of Ch1 and Ch2. The unit’s Dante receiver (input) channels have default names of Ch1 and Ch2. Using the Dante Controller application, the default device name and channel names can be revised as appropriate for a specific application.

Konfigurace zařízení
Model 394 podporuje audio sample rate of 48 kHz with no pull-up/pull-down options available. The unit’s digital audio input and output data is in the form of pulse-code modulation (PCM) samples. The encoding choice is fixed to be PCM 24. Clocking and device latency parameters can be adjusted within the Dante Controller application if required but the default values are typically correct.

Konfigurace sítě – IP adresa
By default, the Model 394’s Dante IP address and related network parameters will be determined automatically using DHCP or, if not available, the link-local network protocol. If desired, the Dante Controller application allows the IP address and related network parameters to be manually set to a fixed (static) configuration. While this is a more-involved process than simply letting DHCP or link-local “do their thing,” if fixed addressing is necessary, this capability is available. In this case, it’s highly recommended that a unit be physically marked with its specific IP address—for example, using a permanent marker or “console tape.” If knowledge of a Model 394’s IP address has been misplaced there is no configuration reset button or other method to easily restore the unit to a default IP setting.

Konfigurace AES67 – Režim AES67
The Model 394 can be configured for AES67 operation. This requires that the AES67 Mode in the Dante Controller application be set for Enabled. By default, AES67 mode is set for Disabled.

Model 394 Zdroj hodin
While technically the Model 394 can serve as a Leader Clock for a Dante network (as can every Dante- enabled device), in virtually all cases, the unit will be configured to receive its timing reference (“sync”) from another Dante device. As such, Dante Controller’s check box for the Preferred Leader that is associated with the Model 394 would typically not be enabled.

Konfigurace modelu 394
The ST controller software application is used to configure the way in which the Model 394 functions. No DIP switch settings or other local actions are used to configure the unit. This makes it imperative that the ST controller application be available for convenient use on a personal computer that’s connected to the related LAN.

Instalace řadiče ST

• The ST controller software application is available free of charge on the Studio Technologies webmísto studio-tech.com. Versions are available that are compatible with personal computers running selected versions of the Windows and macOS operating systems. If required, download and install ST controller onto the designated personal computer. The network connection of this personal computer must be on the same local area network (LAN) and subnet as the Model 394 unit that is going to be configured. Upon startup, ST controller will locate all Studio Technologies devices it can control. The one or more Model 394 units to be configured will appear in the device list. Use the Identify command to allow easy recognition of a specific Model 394 unit. Double-clicking on a device name will cause the associated configuration menu to appear. Review aktuální konfiguraci a proveďte požadované změny.
• Changes made using the ST controller application will be immediately reflected in the unit’s operation; no Model 394 reboot is required. Each time a Model 394 configuration change is made, the unit’s front-panel pushbutton switches will flash orange twice in a distinctive pattern. This provides a clear indication that a command from ST controller has been received and acted upon.

Konfigurace

• GPI Status – Channel 1 and Channel 2
  ST controller includes two virtual “LED” indicators that can be viewed within the application to determine the active or inactive status of the Model 394’s two GPI functions. They are updated in real time. A virtual LED will be gray when its respective GPI function is in its off (inactive) state. It will be yellow or green when its respective GPI function is in its on (active) state.
• Button Mode – GPI 1 and GPI 2
  Choices are Disabled, Momentary, and Latching.
  Two pushbutton switches are located on the front of the Model 394. The operation of each button, individually, can be configured from among three choices. If Disabled is selected, pressing the pushbutton switch will cause no action to take place. If Momentary is selected, pressing the pushbutton switch will cause the associated GPI function to become active. It will remain active until the pushbutton switch is released. If Latching is selected, momentarily pressing (tapping) the pushbutton switch will cause the associated GPI function to change state, either off-to-on or on-to-off.
• Button Control – GPI 1 and GPI 2
  The button control section provides two virtual (software-implemented) pushbutton switches. They are labeled GPI 1 and GPI 2. They allow software control of the Model 394’s GPI functions when the button mode configuration has been selected for Latching. If the button mode has been selected for Disabled or Momentary, the button will be “grayed” out and not available for use. The mouse or keyboard associated with a personal computer can be used to change the GPI function’s status from off-to-on or on-to-off. This can prove especially useful during installation and testing of the Model 394.
  Additional Dante Tx Audio Source – Channel 1 and Channel 2
• Choices are: Off, Rx Ch1, and Rx Ch2.
  When a GPI function is active, a 20 kHz sine wave tone is sent out its associated Dante transmitter (out-put) channel. If desired, this tone can be combined (mixed) with an audio signal that enters the Model 394 by way of one of the Model 394’s two Dante receiver (input) channels. A configuration selection for each channel allows a signal source to be selected. The selected audio source will be routed, at unity gain (no gain or attenuation) to the Dante transmitter (output) channel continually. Only when a GPI function is active will the 20 kHz sine wave tone be added (combined) with the selected source.

Operace

• At this point the Model 394 should have been placed in the desired physical location. All connections and configuration steps should have been completed and everything should be ready for Model 394 operation to commence. An Ethernet connection with Power-over-Ethernet (PoE) capability should have been made. Alternately, a midspan power injector, in “series” with the Ethernet connection, should have been put into place. One or two contact closures should be connected to the GPI inputs by way of the detachable 4-position screw terminal strip.
• Using the Studio Technologies ST controller software application the unit’s configuration should have been set to meet the needs of the specific application. The Model 394’s Dante configuration settings should have been selected using the Dante Controller software application. In this way, either or both of the unit’s two GPI channels (Dante transmitter (output) channels) should have been routed, by way of Dante “subscriptions,” to Dante receiver (input) channels on associated Dante-enabled equipment.

Počáteční provoz
The Model 394 will start to function as soon as a Power-over-Ethernet (PoE) power source is connected. However, it may take 20 to 30 seconds for full operation to commence. Upon initial power up the green LED labeled FIRMWARE UPDATE, located on the unit’s back panel, will light for a few seconds. The two network status LEDs, labeled LINK and ACT, are also located on the unit’s back panel below the RJ45 jack. They will begin to light as network connections are established. On the front panel, the power LED and the LEDs contained within the pushbutton switches will light in a test sequence. The power LED will first light green, then red, then again green to indicate that power is present. The pushbutton switches will first light green and then orange. Afterwards they will follow the status of the GPI inputs, the pushbutton switches, and the “virtual” (software-created) buttons in ST controller.

Jak identifikovat konkrétní model 394
Functions within the Dante Controller and ST controller software applications allow a specific Model 394 unit to be identified. Each application provides an “eyeball” icon that when clicked will activate the Identify function. When Identify is selected, it will send a command to a specific Model 394 unit. On that unit LEDs within the two pushbutton switches will flash orange in a unique pattern four times. After the identification pattern ceases normal Model 394 LED operation will resume.

Stavové LED diody Ethernet
Two Ethernet network status LEDs are located below the RJ45 connector on the Model 394’s back panel. The LED on the lower left, labeled LINK, provides a link status function. It will light yellow when a valid connection to an Ethernet network has been established. The LED on the lower right, labeled ACT, serves as a data activity indication, flashing green in response to Ethernet data packet activity.

External Contact Closures
One or two contact closures can be connected to the Model 394’s GPI inputs. When a contact connected to GPI 1 closes (shorts) the LED indicator in the pushbutton switch labeled GPI 1 will light orange. This is provided for confirmation during installation, testing, operation, maintenance, and repair. As expected, closing (shorting) the contact connected to GPI 2 will cause the orange LED in pushbutton LED 2 to light.

Pushbutton Switch Operation
Two pushbutton switches are located on the front panel of the Model 394. They are available for use during installation, maintenance, and normal unit operation. How the pushbutton switches function is determined by configuration settings made using the ST controller application. Pressing a pushbutton switch that has been configured for disabled will have its LED flash green five times to indicate that it has been disabled. In this case, no GPI action will take place. Pressing a pushbutton switch that has been configured for momentary will cause the function to be enabled during the time that the button is pressed. The button’s LED will light green when it is pressed. If the pushbutton switch has been configured for latching, momentarily pressing (tapping) the pushbutton switch will cause the function to either go from off-to-on or on-to-off. The pushbutton switch’s LED will light green when the function is active.

ST controller Activation of GPI Functions
If a pushbutton switch has been configured for latching operation, a virtual (software-created) pushbutton switch is provided in the ST controller application. A computer mouse or key stroke can be used to activate the GPI function. The LED associated with the unit’s pushbutton switch, and the virtual LED on ST controller, will light to indicate that the function is active. The virtual pushbutton switch will also indicate, in real time, the status of the associated GPI function.

Simultaneous Use of External Control Closures, Pushbutton Switches, and Virtual Pushbutton Switches
The contact closure input, the pushbutton switch on the front panel, and the virtual pushbutton switch provided by ST controller for each GPI function will function at the same time, performing a logical “OR” function. The GPI function will be active if the external contact is closed (shorted), the pushbutton switch is active, the virtual pushbutton switch is active, or if any combination of the three is in its active state. The pushbutton switch’s LED will light orange if only the contact input is closed (shorted). It will light green if the pushbutton switch or virtual pushbutton switch is active, whether or not the contact input is closed (shorted).

ST controller Virtual GPI Status LEDs
The ST controller application can be utilized to monitor the status of the GPI functions. Two virtual (software- created) indicators are provided, one for each GPI function. A virtual LED will be gray in color when its associated GPI function is not active. It will be yellow when the GPI function is active due to a contact closure being present on the unit’s GPI input. The virtual LED will be green when the pushbutton switch on the Model 394 is active. It will also be green if the virtual (software-created) pushbutton switch on ST controller is active.

Technické poznámky

Přiřazení IP adresy
By default, the Model 394’s Ethernet interface will attempt to automatically obtain an IP address and associated settings using DHCP (Dynamic Host Configuration Protocol). If a DHCP server is not detected an IP address will automatically be assigned using the link-local protocol. This protocol is known in the Microsoft® world as Automatic Private IP Addressing (APIPA). It is also sometimes referred to as auto-IP (PIPPA). Link-local will randomly assign a unique IP address in the IPv4 range of 169.254.0.0 to 169.254.255.255.

• In this way, multiple Dante-enabled devices can be connected together and automatically function, whether or not a DHCP server is active on the LAN.
• An exception does arise when trying to directly interconnect two Dante-enabled devices that use Ultimo integrated circuits to implement Dante. The Model 394 uses Ultimo and, as such, a direct one-to-one inter connection to another Ultimo-based product is not supported. An Ethernet switch linking the two units is required to successfully interconnect two Ultimo-based devices. The technical reason that a switch is required relates to the need for a slight latency (delay) in the data flow; an Ethernet switch will provide this.
• As previously discussed, the Model 394’s Dante IP address and related network parameters can be manually-selected using the Dante Controller software application. This is also referred to as selecting a “static” or “fixed” IP address. In the unfortunate event that a specific Model 394’s IP address is not known by users, there are several techniques that may prove useful. It’s possible that the Address Resolution Protocol (ARP) networking command can be used to “probe” devices on a network for the “lost” information. For example, in Windows OS the arp –a command can be used to display a list of LAN information that includes MAC addresses and corresponding IP addresses. (Within this list should be the Model 394’s manually assigned Dante IP address.) This diagnostic method is most effective with a LAN that uses unmanaged Ethernet switches. Contemporary LANs that utilize managed switches may limit the ARP command’s effectiveness.
• In general, the simplest means of identifying an unknown IP address is to create a “mini” LAN with an unmanaged PoE-enabled Ethernet switch. Then by using the appropriate ARP command the required “clues” can be obtained.

Optimalizace výkonu sítě
For best Dante audio-over-Ethernet performance a network that supports VoIP Quality of Service (QoS) capability is recommended. This would apply to the Model 394 as the unit generates audio tones that are transported within the Dante transmitter (output) paths. QoS can typically be implemented on virtually all contemporary managed Ethernet switches. There are even specialized switches that are optimized for entertainment-associated applications. They implement QoS and related capabilities with only a single management selection required. Refer to the Iodinate website for details on optimizing networks for Dante applications.

Zobrazení verze firmwaru aplikace
A selection in the ST controller software application allows the Model 394’s application firmware version to be identified. This can be useful when working with factory personnel on application support and troubleshooting. To identify a Model 394’s firmware version, begin by connecting the Model 394 unit to the network (via Ethernet with PoE) and wait until the unit starts to function. Then, after starting ST controller, review the list of identified devices and select the specific Model 394 for which you want to determine its application firmware version. Then select Version and Information under the Device tab. A page will then display the version number of the application firmware as well as additional details on the Dante interface firmware.

Postup aktualizace firmwaru aplikace
Je možné, že budou vydány aktualizované verze firmwaru aplikace (vestavěný software), který využívá integrovaný obvod mikrokontroléru (MCU) modelu 394, aby byly přidány funkce nebo opraveny problémy.

Refer to the Studio Technologies webweb pro nejnovější firmware aplikace file. Jednotka má schopnost načíst revidované file into its MCU’s non-volatile memory. The Model 394 implements a USB host function that directly supports connection of a USB flash drive. The Model 394’s MCU updates its firmware using a file named M394vXrXX.stm where the Xs are the decimal digits that represent the application’s version number. The update process begins by preparing a USB flash drive. The flash drive doesn’t have to be empty (blank) but must be in the personal-computer-standard FAT32 format. The MCU in the Model 394 is compatible with USB 2.0-, USB 3.0-, and USB 3.1-compliant Flash drives. Save the new firmware file v kořenové složce s názvem M394vXrXX.stm, kde XrXX je skutečné číslo verze. Firmware aplikace dodá Studio Technologies file uvnitř archivu .zip file. Zatímco firmware file uvnitř zipu file bude dodržovat konvenci pojmenování vyžadovanou modelem 394, název zipu file sám bude obsahovat filečíslo verze. Za example, a file s názvem M394v1r02MCU.zip by znamenalo, že tento soubor zip obsahuje verzi 1.02 firmwaru aplikace (M394v1r02.stm). file spolu s textem readme (.txt). file.

Once the USB flash drive is inserted into the USB receptacle, located on the back panel of the Model 394, the unit must be powered off and again powered on. At this point the file automaticky načte. Přesné požadované kroky budou zdůrazněny v následujících odstavcích této příručky.

Chcete -li nainstalovat firmware aplikace file, postupujte takto:

1. Disconnect power from the Model 394. This will entail removing the Ethernet connection that is made to the RJ45 jack on the back panel.
2. Locate the USB receptacle on the back of the unit. Insert the prepared USB flash drive into it.
3. Apply power to the Model 394 by connecting an Ethernet signal that has Power-over-Ethernet (PoE) present to the RJ45 jack.
4.  Po několika sekundách spustí model 394 program „bootloader“, který automaticky nahraje nový firmware aplikace file (M394vXrXX.stm). This loading process will only take a few seconds. During this time period, an LED, located adjacent to the USB receptacle, will slowly flash green. Once the entire loading process is over, taking approximately 10 seconds, the Model 394 will restart using the newly loaded application firmware.
5.  At this time, the Model 394 is functioning with the newly loaded application firmware and the USB flash drive can be removed. To minimize risk of data corruption, remove PoE power first and then remove the USB flash drive. Re-connect the Ethernet signal to restart the unit.
6.  Using the ST controller software application, confirm that the desired Model 394 application firmware version has been correctly loaded.

Note that upon power being applied to the Model 394, if a connected USB flash drive doesn’t have the correct application firmware file (M394vXrXX.stm) in its root folder no harm will occur. Upon power up, the LED adjacent to the USB receptacle will rapidly flash green for a few seconds to indicate this error condition and then normal operation using the unit’s existing application firmware will begin.

Aktualizace firmwaru Ultimo

• As previously discussed, the Model 394 implements Dante connectivity using the UltimoX2 integrated circuit from Adnate. The Dante Controller software application can be used to determine the version num-ber of the firmware (embedded software) that resides in this integrated circuit. The ST controller software application can also be used to identify the firmware version. (Use the Version and Information selection under the Device tab.) The firmware (embedded software) residing in the UltimoX2 can be updated using the Model 394’s Ethernet port. Performing the update process is easily accomplished using an automated method called Dante Updater which is included as part of the Dante Controller software application. This software application is available, free of charge, from the Audinate webmísto.
• Nejnovější firmware Model 394 Dante file, s názvem ve tvaru M394vXrXrX.dnt, je vždy k dispozici na Studio Technologies' webstránky a také součástí databáze produktové knihovny Audinate. Ten umožňuje softwarové aplikaci Dante Updater, která je součástí Dante Controller, automaticky dotazovat a v případě potřeby aktualizovat rozhraní Dante modelu 394.

Obnovení továrního nastavení
A command in the S controller software application allows the Model 394’s default settings to be reset to their factory values. From ST controller select the specific Model 394 that you wish to restore to the factory default values. From there, select the Device tab, then the Factory Defaults selection. Then click on the OK box. Refer to Appendix A for a list of the Model 394’s factory defaults.

Appendix A – Model 394 ST controller Default Configurations

• Button Mode – GPI 1: Momentary
• Button Mode – GPI 2: Momentary
• Button Control – GPI 1: Off
• Button Control – GPI 2: Off
• Additional Dante Tx Audio Source – Channel 1: Off
• Additional Dante Tx Audio Source – Channel 2: Off