8 Introduction
C-2000 and C-2000HS Technical Manual
Bosch Security Systems, Inc.
Technical Manual
F.01U.174.927 Rev 03
Common Controls and Indicators
Volume Control
The
Volume Control
is used to adjust the receive audio speaker and handset level of the audio present on the receive inputs of
the line interface. A minimum volume level can be configured in the setup mode so the console operator can not turn the
volume to zero (0). When adjusting the level up or down, the display shows the selected level on a relative scale with zero (0)
being off and 25 being full volume.
Panel PTT Push button
The
Panel PTT Push
button when pressed, audio from the panel microphone, or desk microphone if enabled, is sent on the
TX line interface.
DTMF Keypad
The
DTMF
keypad is used for transmitting DTMF. The DTMF keypad is also used in the setup mode. It can also be disabled
in user mode.
Dual Seven-Segment Display
The
Dual Seven-Segment
display is used to select a frequency and updates with parallel frequency selection, if active.
Function Buttons Up-Down
The
Up
and
Down
arrows are used to select the desired function tone. Pressing the arrows changes the value in the desired
direction. Once the desired function tone is selected, the unit pauses, blinks and then sends the function tone shown on the
display. The pause and blink rate are programmable in setup mode. Only enabled function tones are displayed and transmitted.
No hold tone is associated with the changing of the function tone. A function tone remains selected until the operator changes
the setting.
Transmit LED
The
Transmit
LED
lights when any PTT source is depressed keying up the console. It also blinks if a hold tone is detected on
the TX audio line. This indicates to the operator that another console is currently transmitting on the channel.
Monitor
When the
Monitor
button is pressed a monitor tone burst is sent out. The monitor tone burst consists of a guard tone and
function tone of 2050Hz (default value). The MON LED lights for the duration of the tone burst.
Intercom (IC)
When the
Intercom
button is pressed and held down the C-2000 transmits audio without activating the tone generator or local
relay. Intercom is considered a PTT operation with the tone generator and local control relay disabled. The selected
microphone is based on setup and/or hookswitch status.
