Biamp Vocia VO-4e, Operation Manual, Page: 5 / 24

VO-4e Rear
Power
The VO-4e accepts an external dual 24V DC power source, Power over Ethernet (PoE), or both methods
for redundancy. Both power sources may be connected concurrently, however each must be capable of
supporting the full 15 watt load of the unit. Loss or return of either power source will not result in an
interruption to normal operation as long as one of these power sources remains functional. Monitoring of
power sources is selectable via the Vocia Software.
The power connector is a four-way 5.08mm standard header with mating pluggable screw terminal block
with cable restraint. When power is present at either or both 24V power inputs or the Auxiliary Power
input the corresponding front panel green power LED will illuminate.
CAUTION
Due to potential energy hazard, connections to the Auxiliary Power DC inputs must be made by a qualified electrician or other
qualified person as required to conform with all local codes.
Pin Function
1
DC Power 1 24V(+)
2 DC Power 1 24V(-)
3
DC Power 2 24V(+)
4
DC Power 2 24V(-)
Device ID
The rotary ID switches give the unit a unique Device ID. The switches are in hexadecimal format. All units
of the same device type must have a unique Device ID to function properly within a Vocia Paging World.
The Factory Default Device ID is 01. A Device ID of 00 is invalid and cannot be used.
To assign a Device ID of hex 07, leave the MSB switch on 0 and turn the LSB switch to 7. Device ID
switches should be set using a 0.1 inch (2.5mm) to 0.12 inch (3.0mm) flat blade screwdriver.
NOTE
Changes made to the Device ID while connected to the network require a power cycle of the device in order to take effect.
Network Connections
All CobraNet routing and bundle assignments are processed by the Vocia devices locally. Vocia makes
dynamic use of available bundles in CobraNet. A 100Base-T Ethernet switch (not repeater hub) is
required when networking multiple units. CobraNet utilizes standard CAT5, CAT5e, CAT6, or CAT7
cabling, which has a specified maximum length of 328 feet (100 meters). Additional Ethernet switches, or
switches which provide fiber-optic interface, can be used to extend the physical distance between units
within a network. Please note that CobraNet limits network extensions to seven hops (one-way
transmissions) within a network. The CobraNet network connection is configured with the primary
connector on the left and the secondary (redundant) connector on the right. The primary and secondary
CobraNet ports are provided to facilitate connection redundancy. Each connector provides two LEDs that
indicate Ethernet link and network activity.
Left LED Right LED Description
None None No Data Connectivity or CobraNet activity
None Green Link established