Biamp LSI-16e - Manual (Page 10)

10
LSI-16/LSI-16e REAR PANEL
(I/O 3) Voice Alarm Active
This output is active when messages are playing in response to an alarm input. This output provides indication of when a message is
playing or when a message has been muted.
Constant active output - indicates a message is playing in response to an alarm input.
Cyclic output (1.25Hz) - indicates the message has been muted.
(I/O 4-7) General Fault, PSU Fault, Protection Fault and Path Fault
These outputs will be activated by the same alarm conditions as identically named LEDs on the front panel (described above). Note
however that these outputs will be activated by the faults listed above irrespective of whether a System Fault has been activated.
The Voice Alarm Active, General Fault, PSU Fault, Protection Fault and Path Fault outputs are monitored for open-circuit or short-circuit to
ground or power supply and for over-voltage on the output pin (>35V DC). If incorrect conditions are detected a Fault is signaled. Output
monitoring facilitates compliance with voice evacuation standards.
System Test
A system test can be initiated by simultaneously connecting monitored outputs 1 and 2 to ground (see connection diagram). A system test
runs a diagnostic test, part of which illuminates each LED in turn and momentarily activates the sounder.
Connection Diagram: external switches and sounder (Note: 10V supply may be derived from the LSI-16/LSI-16e Outputs Connector)
SW1 System Fault Reset (e.g. EAO 31-453 or equivalent switch)
SW2 System Test (e.g. EAO 31-453 or equivalent switch)
SW3 Silence Local Sounder (e.g. EAO 31-453 or equivalent switch)
D1 and D2 1N4004 or equivalent general purpose 1A diode
R1 and R2 22kΩ 0.25 watt resistor
S1 Piezo (or similar) sounder - tone and sound pressure level may be required to
comply with local norms