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NQ-E7020 Digital Call Switch
Application Manual
The NQ-E7020 is a single gang-box style wall mounted
push-button switch that allows users to initiate a normal,
urgent, or emergency call from staff locations via an
associated Nyquist intercom speaker.
The switch uses a capacitive touch button interface. A color
LED ring is used to conrm user actions and to indicate
status (for example, changing color and/or state from
solid color to blinking) or to acknowledge a button press when a user
initiates a call or when a call has been terminated. The LED status ring
is also used to indicate when Nyquist system’s call queue containing
the station’s call request is cleared or if the station’s call request is
individually cleared by the administrative station without responding.
Installation
The NQ-E7020 mounts into a standard single gang outlet box and is outtted with a standard deco-
ra plate (color based on the switch’s specic application and/or customer need).The back has four
screw-terminal connections (GND, CL, CH, 5V). These get connected to the matching terminals on
the CAN Bus source/master device using standard CAT5 cabling. Load resistance needs to be set
on the end-of-line DCS. Refer to Figure 1.
Figure 1
Publication Number 740-00075B 1811
CAN_H and CAN_L must be a twisted pair like CAT5 cabling.
CAN wiring can be daisy-chained.
All devices are internally terminated and the last switch on the bus must have the termination switch in the “ON” position.
5V and Signal Ground can be either twisted or not.
Signal Ground
CAN_L
CAN_H
5V
Digital Call Switch Digital Call SwitchApplicable
Appliance
Recommended CAT5
Cable Lengths
CAT5 cable lengths and the number of
CAT5 wire pairs determine the number
of digital call switches that can be dai-
sy-chained. (See Figure 2.)
Length limits are due to voltage drop
across the power conductors. For 2-pair
or 3-pair, it is best to tie the solids togeth-
er and to tie the stripes together at each
end of a long run. This will make it easier
to keep up with which wires are V+ and V-.
CAUTION:
These calculations are based on standard 24 AWG solid copper wire. Calculations will not be
accurate for copper-plated aluminum wire or wire guage less than 24 AWG.
Conguring
NOTE: Refer to the System Administrator Manual for detailed instructions on how to congure
the DCS. DCS conguration is part of setting System Parameters and Class of Service parame-
ters.
1200 MacArthur Blvd. Suite 304, Mahwah, NJ 07430 • 1-800-999-2809
© Copyright 2018, Bogen Communications, Inc.
Figure 2

Produktspecifikationer

Varumärke: Bogen
Kategori: Kontroller
Modell: NQ-E7020

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