QSC BASIS 914lz Hardware Manual

9
Example #4 - Two-Wire Interface (shared network hardware):
This example illustrates the Two-Wire Interface with a managed Ethernet switch. The switch is configured with multiple virtual
local area networks (VLANs). Ethernet deliveries can only reach destination ports belonging to the same VLAN from which it was
sourced. The figure shows a separate VLAN for QSControl.net traffic and a separate VLAN for CobraNet audio traffic. This config-
uration essentially provides a dedicated network for BASIS 914lz control and monitoring (including the system controller) and a
second dedicated network for CobraNet audio. As with the previous example, as many BASIS 914lz units may be connected as
there are switch ports available. All BASIS units will be able to communicate with the computer. All will have CobraNet audio.
Switches can be connected to other switches to build larger networks; all of the normal networking principles apply.

QSC BASIS 914lz Specifications

Performance

dynamic range unweighted	> 112 dB
dynamic range A weighted	> 115 dB
distortion	< 0.009% THD+N
crosstalk inter-channel maximum	> 75 dB
crosstalk inter-channel typical	> 90 dB
crosstalk intra-channel maximum	> 85 dB
crosstalk intra-channel typical	> 100 dB
frequency response maximum	+/- 0.5 dB
frequency response typical	+/- 0.2 dB
audio converters	24 bit, 48 kHz

Inputs/Outputs

program inputs	4 inputs
input impedance nominal balanced	10k ohms
input impedance nominal unbalanced	10k ohms
program outputs	16 outputs
maximum qualified length	328 ft (100 m) using QSC DP cable only

Control Inputs/Outputs

omni inputs	2 discrete inputs
normal operating range	0-5 V nominally
voltage tolerance	+/- 48 V