Bosch DCN Next Generation Operation Manual page 220

220 en | Configuration
The channel selector measures the impedance between pin 1 and pin 2 of the headphones
plug (see 19 inch Units, page 112 > Headphones). When this impedance is less than 1 kΩ, the
channel selector identifies that the headphones are present.
Volume increment/decrement
With the X12 solder spot, you can enable or disable the volume increment/decrement function
of the channel selector.
Solder spot
Not Soldered*
Soldered
Table 7.37: Solder spot X12 (* = default)
Channel/volume restore function
Use the X13 solder spot to enable or disable the channel/volume restore function of the
channel selector.
Solder spot
Not Soldered*
Soldered
Table 7.38: Solder spot X13 (* = default)
For example, you can enable this function when all delegates and chairmen have a fixed seat
number.
Notice!
The channel selector saves all channel changes after 5 seconds.
Notice!
If the last known channel number is greater than the maximum number of channels that are
available, the channel selector automatically goes to channel 0. When the last known channel
becomes available, it is only restored if you did not operate the buttons of the channel
selector.
2013.11 | V2.0 | DCN-NG_OM_V4.x
Function
The volume increment/decrement function is enabled. When the volume
up (down) button is pushed for longer than 0.25 seconds, the volume
level is increased (decreased) with 12 dB per second.
The volume increment/decrement function is disabled. When the
volume up (down) button is pushed, the volume level increases
(decreases) with one step of 1 dB.
Function
The channel/volume restore function is disabled. When the channel
selector is enabled, it automatically:
– Selects channel 0 (floor)
– Sets the volume level to -18 dB.
The volume increment/decrement function is disabled. When the
volume up (down) button is pushed, the volume level increases
(decreases) with one step of 1 dB.
– Select the last known channel.
– Sets the last know volume level.
Operation Manual
Conference System
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