VI-8 Hardware

This section is provided to aid in the use of the VI-8. Please see the Hardware Manual for further information on installation of the device.

Power (Chassis Indicator) - If power is applied to one or both 24V DC power connector the corresponding LED will be on.

• Off – The corresponding power connection is not in the working voltage range.
• Solid green – The corresponding power connection is receiving 24V DC power.

Fault (Chassis Indicator) - Indicates the state of the Control Inputs.

• Off – Normal operation.

• Flashing amber – A Control Input configured as "High Range - monitored" or a Control Output configured as "Monitored Active Low" has a monitoring fault.

• Solid amber -A Control Input assigned to an emergency fault type has been asserted.

Activity (Chassis Indicator) - Illuminates to show the configuration status of the unit.

• Solid green – The unit is configured.

• Flashing amber - Unit is configuring or is disabled as it is not included in the Vocia configuration

• Solid red - Failed to load configuration

Status (Chassis Indicator) - Indicates the health of the hardware.  

• Off - Unit powered off.

• Solid green - Unit is powered up and working normally.

• Flashing amber - Will be shown briefly during the power-up self test and will turn steady green upon a successful start.

• Solid red - The unit experienced a problem during the power-on self test.

Fault (Chassis Indicator) and Status (Chassis Indicator)

• Fault: Solid red / Solid amber  Status: Solid red - The unit is running in recovery mode. If performing a Firmware update, re-attempt pushing FW. If device ID has been set to 0,0 change it to a valid range (0,1 or higher). If problem persists please contact Biamp technical support.

Audio Channel

• Green – audio signal level is between -48 dBFS and -19 dBFS.

• Amber – audio signal level is between -18 dBFS and -3 dBFS.

• Red - audio signal level is above -2dBFS.

Rear Panel

The VI-8 only requires a single 24V DC power source to operate but is capable of accepting dual 24V DC inputs for redundancy. Both power sources may be connected concurrently however each must be capable of supporting the full 30 Watt load of the unit (inputs are not intended to load-share). Loss or return of any power supply will not result in interruption to normal operation. When power is present at either or both 24V power inputs the corresponding front panel green power LED will illuminate.

Network

The VI-8 utilizes the Vocia CobraNet LAN to communicate with the rest of the Vocia system. The unit has two monitored RJ45 Ethernet Network connectors that allow a redundant connection to be utilized if required. The Primary connection will always have priority over the Secondary connection. The secondary connection can be disabled in software.

The RJ45 connectors use two LEDs to indicate Ethernet link and network activity (see table below).

Audio Inputs

The VI-8 features eight balanced Mic Line connections.

Control Output Relay Connections

Control Input Connections

Nine software configurable Control Inputs are available. Input nine has the additional ability to work with the Status Out pin to allow device monitoring indication.

Types of Input Circuit

The logic level of each input may be independently determined in the Vocia software to operate one of three ways. These are;  

• TTL (2v to 5v logic sense) - To enable a TTL input, apply a TTL logic high with respect to Isolated Ground. This can be configured in Software to reference a low to high or high to low transition.

• High Range - To enable a High Range input, use a dry contact to switch the input to a voltage of 24V DC with respect to Isolated Ground. This can be configured in Software to reference a low to high or high to low transition.

• High Range Monitored - This circuit is implemented in the same way as the ‘High Range’ input. This option allows monitoring of each input for short to ground, open circuit or over-voltage. In order to sense open circuit, a terminating resistor must be fitted between each control input and Isolated Ground at the far end of the input circuit being sensed. The IM-16 will sense open circuits on the line between its input and the terminating resistor. A 6k8Ω resistor should be used. If a monitoring fault is detected on any input the logic state or transitions on that input will be ignored until the fault is cleared. This is fixed in software to reference a low to high transition (to enable the monitoring circuit).

• Contact Closure - This selection allows the inputs to be asserted without a monitoring resistor or voltage. Line monitoring of a Contact Closure input is not possible.

Please review the VI-8 Wiring section for physical wiring details.

Status In and Status Out Connection

The Status In and Status Out Control I/O can be configured in software to allow monitoring of multiple VI-8 devices. This can then be reported as a summary alarm to external monitoring systems. To achieve this the SI and SO pin states will toggle between an active state of high and an active state of low to notify the connected device of its presence.

Status Monitor Wiring

All VI-8 devices must connect their isolated grounds together and this ground wire must also connect to the third party system. The Status Out also needs to be connected to the input of the third party system. There is a 100ft (30 meter) distance limitation between units and minimum of 24AWG cable should be used. Please review the Status_Wiring section for more details.

24V DC Out

A 100mA 24V DC output is available