System information

98
Hardware
E Desk Hardware
E Desk™ is a 2RU chassis with CobraNet™. It has 8-in & 8-out (8x8). Inputs & outputs are analog, with internal 24-
bit A/D & D/A converters, operating at a sample rate of 48kHz. All internal processing is digital (DSP). CobraNet 8x8
input/output expanders are also available (see DCS88 and E Snake).
Inputs & Outputs: Inputs & outputs are provided on balanced plug-in barrier-strip connectors. For unbalanced input,
wire high to (+) and ground to both (
) & (-). For unbalanced output, wire high to (+) and ground to (), leaving (-) un-
connected. With E Desk, inputs can be individually programmed to accept either microphone or line level signals.
Outputs provide line level signal only.
Ethernet: All E Desk units
use Ethernet, both for system programming & control. Programming is accomplished
using the E Desk software provided with each unit. E Desk software is for PC computers, with Windows NT
4.0/2000/XP operating system required. The PC computer must have a network card installed, which supports
10/100BaseT Ethernet. A 10/100Base-T Ethernet switch (not hub) is required when networking multiple units (see
System Network Considerations). Ethernet utilizes standard CAT-5 cabling, which has a specified maximum length of
100 meters. However, Ethernet switches which provide fiber-optic interface can be used to extend the physical
distance between units within a network.
Remote Control Bus: The Remote Control Bus provides the connection for V8, S8, VS8, and Voltage Command Box
external control devices. (See Control Bus for more information).
CobraNet™: E Desk units use CobraNet and can automatically share digital audio & DSP resources within a system,
allowing seamless networking. The E Desk CobraNet interface supports 64 channels of digital audio (32-in & 32-out),
over Fast Ethernet, and is compatible with other CobraNet compliant devices. Therefore, E Desk can also be
networked with CobraNet products from other manufacturers, expanding the system configuration capabilities. A
10/100Base-T Ethernet switch (not hub) is required when networking multiple units (see System Network
Considerations). CobraNet utilizes standard CAT-5 cabling, which has a specified maximum length of 100 meters.
However, additional Ethernet switches, or switches which provide fiber-optic interface, can be used to extend the
physical distance between units within a network. The primary and secondary CobraNet ports are redundant.
Serial Control Port: After initial programming & configuration, E Desk systems may be controlled by RS-232 or
Telnet communication from third-party control systems such as AMX
®
or Crestron
®
, using the Serial Control Port.
Power Entrance: The Power Entrance provides for connection of the appropriate power cord (included with unit). An
internal universal switching power supply accepts 100~240VAC @ 50/60Hz, with a maximum power consumption of
115 Watts.