Bosch LA3-VARI-B Installation Manual page 40

40 en | Technical Data
Mains inrush current
Protection
Signal processing
DSP
ADC / DAC
Sample rate
Functions
Control
Network interface
Max. number of units
Surveillance
Failure relay
Contact 1
Rating
Contact 2
Control voltage input
CobraNet
Interface
2018.06 | V1.3 |
<70 A (at 230 V)
Thermal shutdown
Current limiting
Under voltage lock‑out
5
32‑bit floating point, 900 Mflops
24‑bits S‑D, 128 x oversampling
48 kHz
Pre‑delay (max. 21 s)
Input‑delay (max. 2 x 10 s / 4 x 5 s)
Equalizer and compensation filtering
Compressor
Volume
AVC
RS‑485 full duplex, auto‑switching 115k2, 57k6, 38k4,
19k2 baud, optically isolated
7 126
General status
Amplifier and load monitoring
External pilot‑tone detection
(20 kHz to 30 kHz, min. level -22 dBV)
Built‑in ambient noise sensing microphone
Thermal overload protection
Maskable conditions
No failure = closed / Failure = open
Max. 24 V, 100 mA
No failure = 10 k ohm / Failure = 20 k ohm
5 to 24 Vdc, optically isolated
RJ‑45, Ethernet 100 Mbps
Installation manual
VARI-directional array
Bosch Security Systems B.V.