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