Hardware manual

3.4 Network Addressing

Hardware address settings are determined in two ways (depending on the ampliﬁer class.)

In Pro class ampliﬁers, the network address is given by its Supervisor’s address. A

Supervisor is a unique network node whose address is set via DIP switches on the rear

panel. This is the primary address. The rear of the Supervisor holds up to 12 daughter cards

– each with 2 ports for a total of 24 ports. An ampliﬁer’s secondary address is given by the

port number to which it is connected. The maximum number of ampliﬁers that can be con-

nected to a network is 744 (31 Supervisors, each with 24 ampliﬁers.)

Pro class Load Monitor Mainframe’s network addresses are set in the same manner as

Supervisors. Load Monitors can hold up to 12 daughter cards which can accommodate 2

ampliﬁer channels for a total of 24 ampliﬁer channels.

CK family Power Processing ampliﬁers are connected directly to the network – there is no

need for Supervisors and Load Monitors. Each address is set via a hexadecimal* rotary

selector on the back of the NexSys network module (NC-NXS.) A network can accommo-

date 31 CK family ampliﬁers before a hub is needed. For systems with more than 31 nodes,

a NexSys Hub is needed. The secondary network of the hub can accommodate 31 more

nodes. So the largest CK class system would contain 961 ampliﬁers. Load Monitoring and

other processing functions in the CK family ampliﬁers use the same address as the ampliﬁ-

er.

* NexSys displays most addresses in decimal (Base 10). You must address

the CK family ampliﬁers using the hexadecimal spinwheels. A hex-to-dec-

imal table is provided in Appendix A.

When NexSys displays or requires a number to be entered in hexadecimal

(Base 16), an ‘H’ will appear next to the number. The bus server address

in the options bus server window is a prime example.

NexSys v. 3.0 Crest Audio Inc.

Page 3.6 Software Manual