CRESTRON
CNTBLOCK
Network Terminal Block
R E M O T E C O N T R O L S Y S T E M S
1
DOC. 8055A
Specifications subject to change without notice.
CRESTRON
MODEL: CNTBLOCK
POWER
NORM ON (Y)
NORM OFF (Z)
CONNECT
ORS
ARE IN P
ARALLEL
8
7
1
6
5
4
3
2
NET
NET
NET
NET
NET
NET
NET
NET
G
Z
Y
24
G
Z
Y
24
G
Z
Y
24
G
Z
Y
24
24
G
Z
Y
G
Z
Y
24
G
Z
Y
24
G
Z
Y
24
1.9 in
4.8 cm
5.8 in
14.7 cm
Figure 1. CNTBLOCK, Network Terminal Block
TOP PANEL
SIDE PANEL
(connectors exposed)
UNIT DEPTH: 0.9 in (2.3 cm)
DESCRIPTION:
Functional Description
T
he CNTBLOCK, illustrated in figure 1, is a network terminal expander and diagnostic tool for the
CRESNET II remote control system (herein referred to as the CRESNET II system). The eight
network connectors on the CNTBLOCK are setup as two sets of four. Power can be isolated
between the two sets by disconnecting a jumper on the board. The unit provides LED indicators
which help isolate wiring problems.
Physical Description
The CNTBLOCK is housed in a black enclosure with a silk-screened top panel (refer to figure 1).
Three LEDs are located toward the center of the top panel: a green LED (POWER) and two red
LEDs (NORM ON (Y) and NORM OFF (Z)). Eight four-pin network connectors are accessible from
the two longest side panels of the unit (four per side).
For stability two Dual Lock fasteners are supplied with the unit, but unattached. If desired, the
fasteners may be applied to the underside of the CNTBLOCK. At the shorter sides of the unit, the
enclosure extends to form feet at a right angle to the side. There are three holes per foot for
inserting screws to further stabilize the unit.
LEADING SPECIFICATIONS:
Table 1 provides a summary of leading specifications for the CNTBLOCK. Dimensions and weight
are approximations rounded to the nearest tenth unit.
Table 1. Leading Specifications
SPECIFICATION
DETAILS
Power Requirements
+24 VDC
Dimensions & Weight
Height:
1.9 in (4.8 cm)
Width:
5.8 in (14.7 cm)
Depth:
0.9 in (2.3 cm)
Weight:
0.5 lb (0.2 kg)
As of the date of manufacture, the unit has been tested and found to comply with specifications for CE marking.
