Mounting; Configuration - Bosch DCN Next Generation Installation And User Instructions Manual

DCN NG | Installation and User Instructions | Section 2 | Interpretation Equipment
5.4

Mounting

The channel selector has been designed for
flush-mounting (see chapter 25).
5.5

Configuration

5.5.1 Introduction
The following channel selector functions can be
configured using solder spots on the PCB (see figure
5.9):
• Auto stand-by (see section 5.5.2).
• Auto increment/decrement volume (see
section 5.5.3).
• Restore channel & volume (see section 5.5.4).
Caution
Use an anti-ESD bracelet to prevent
electrostatic discharges when handling the
printed circuit board.
figure 5.9: Configuration solder spots
Bosch Security Systems | 2004-03 | 9922 141 70521en
X11
X12
X13
5.5.2 Auto stand-by (X11)
The auto stand-by function of the channel selector can
be configured using solder spot X11 (see figure 5.9).
table 5.5: Solder spot X11
Solder spot Description
Open The auto stand-by function is
(default) enabled. The channel selector is
deactivated when the headphones
are removed from the jack socket.
Closed The auto stand-by function is
disabled. The channel selector
remains active when the
headphones are removed from the
jack socket.
The presence of the headphones is monitored by
measuring the impedance between pin 1 and pin 2 of all
headphones provisions (see also table 5.1). If it
is > 1 kΩ, it is assumed that the headphones are
disconnected.
Note
If the channel selector is used for recording
purposes, the X11 solder spot must be closed.
The input impedance of a recorder may be more
than 1 kΩ.
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