Crestron electronic Network Distribution Block Functional Description, Physical Description

Crestron CNHBLOCK Multi-Type Network Distribution Block

Multi-Type Network Distribution Block: CNHBLOCK

Description

Functional Description

The CNHBLOCK is a Crestron control network (Cresnet) multiple connector type, network distribution block that provides wiring for up to 15 devices and/or peripherals. The CNHBLOCK provides 24 volts direct-current (VDC), Cresnet Y and Z data signals, and ground through three different types of Cresnet connectors. Using any one of the connectors as an input source, the remaining connectors may be used as outputs to other equipment. The CNHBLOCK contains light-emitting diode (LED) indicators that monitor the input power and input data signals.

Physical Description

The CNHBLOCK, shown on the next page, is housed in a black enclosure with silk-screened labels. The front panel contains 16 connectors that are used to input power and Cresnet data signals to the CNHBLOCK and output the same to Cresnet devices. All connectors are internally wired together in parallel. Although not shown, all connectors used to attach the Cresnet wiring to the CNHBLOCK are supplied but Crestron modular cables are not.

Also on the front panel of the CNHBLOCK are three LEDs. The LED labeled POWER illuminates when 24VDC is attached to one connector and is available at the remaining connectors. The Y and Z data signal LEDs are used to diagnose wiring problems of the data signal input to the CNHBLOCK. Refer to “Y and Z LED Illumination” on page 7 for further information.

A mounting plate is attached to the CNHBLOCK and allows the CNHBLOCK to be installed into any location that is convenient for Cresnet wiring. The mounting plate can be removed to install the CNHBLOCK onto the CNXRMAK Rack Mount Kit (not supplied). The CNXRMAK is then installed into a 19-inch rack. Refer to “Rack Installation” on page 4 for details.

Operation & Installation Guide - DOC. 8157 Multi-Type Network Distribution Block: CNHBLOCK ∙ 1