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Praesideo 3.5 | Installation and User Instructions | 3 | Control Equipment
5.7.10 Audio outputs
Connector (rear side):
One XLR and one stereo (dual mono) cinch for each
output
Preferred cable:
Shielded
Maximum output level:
18 dBV ± 1 dB for XLR
6 dBV ± 1 dB for cinch
Output range:
-30 dB to 0 dB with respect to maximal output level
Output level setting:
Software
Frequency response:
-3 dB points at 20 Hz and 20 kHz (tolerance ± 1 dB)
Output impedance:
< 100 ohm
Signal/Noise ratio:
> 89 dBA at maximum level
Output cross-talk:
< -85 dB
Distortion:
< 0.05% at 1 kHz at -3 dB of the maximum input
signal
Bosch Security Systems | 2011-02
5.7.11 Control inputs
Connector (rear side):
Removable screw connector
Total cable resistance:
< 1 kohm (with line supervision)
< 5 kohm (without line supervision)
Resistance detection (supervision enabled):
Cable short circuit
< 2.5 kohm
Contact closed
7.5 kohm to12 kohm
Contact open
17.5 kohm to 22 kohm
Cable broken
> 27 kohm
Resistance detection (supervision disabled):
Contact closed
< 12 kohm
Contact open
> 17.5 kohm
Maximum open voltage:
24 V(DC)
Internal pull-up current:
0.5 mA
External contacts:
Voltage-free closing or breaking contacts (relay
contacts, mechanical switches, mercury contacts
etc.)
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