Internal Settings (System Pre-Amplifier); Setting The Zones For Trigger 1 And 2; Setting Tones - Bosch LBB 1925 Installation And Operating Manual

Plena System Pre-amplifier | Installation and Operating Manual |
2

Internal settings (system pre-amplifier)

1925-8
S301
S302
S303
Figure 2.1

2. 1 Setting the zones for trigger 1 and 2

Trigger inputs 1 and 2 on the rear panel may start alarm or time signals upon closing its contact. The zones for
trigger 1 can be set with S302 (bit 1 to 6), for trigger 2 with S303 (bit 1 to 6). The selected zones receive a time or
alarm tone when the trigger is activated. Time tones are edge triggered and last the duration of the chime. Alarm
tones are level triggered and last until released.

2.2 Setting tones

The time or alarm tone for trigger 1 can be set with S301 (bit 1 and 2) and S302 (bit 7 and 8), for trigger 2 with S301
(bit 3 and 4) and S303 (bit 7 and 8). If you use a LBB 1941 call station, the chime tone must be set with S301 (bit 6
to 8). You can find the chime tone tables at the end of the manual. With S301 (bit 5) the 2-tone chime on the DIN
priority contact for mic/line can be enabled or disabled. The 2-tone chime is 554 Hz (1s), 440 Hz (1s). You can set
the chime volume with VR1.
Bosch Security Systems | 2003-09 | 3922 988 99483en
CN101
CHIMEVOL.
VR1
Internal settings
CN103
CND001
CN105
en | 9
CN104
CND002
CND003
CND102