Hardware manual

Crest Audio Inc. NexSys v. 3.0

3. Network Topology

3.1 Ampliﬁer Classes

NexSys hardware is broken into two general groups: components for the CKS, CKV and

CKX Series ampliﬁers or the “CK family ampliﬁers” and Professional, FCV, CC & CV

Series ampliﬁers or the “Pro class ampliﬁers”.

CK family ampliﬁers utilize a unique modular approach whereby both NexSys network and

Load Monitoring modules are installed in the ampliﬁer itself. In addition, a variety of input

signal (analog and digital) processing modules are available to expand NexSys as a signal

processing system.

Pro class ampliﬁers are connected to the bus via a Supervisor main frame and daughter

cards; Load Monitoring also takes place via an outboard main frame and daughter card unit.

NexSys controllable signal processing modules are not available with this class.

3.2 Networks, Nodes and Buses

The NexSys network is EIA485 compliant. Each Device on the network is termed a node.

Nodes on a NexSys network include: NC-NXS modules installed in CKS, CKV and CKX

ampliﬁers, Hubs (NDP-JTH), MIDI Interfaces, Supervisor and Load Monitor Mainframes

(for Professional, CC/CV & FCV Series ampliﬁers), and the Bus Server itself.

As with any network, each node must have a unique address. Valid addresses range from 1

to 111, inclusive. In the ﬁgure on the next page, an address for each node is shown outside

and next to the Device. For instance, the CKS 800 ampliﬁer is at address 0,3.

Software Manual Page 3.1