Справочник Пользователя для Andrew Wireless System M17P17P17P
5 Alarms
Page
41
5.5 EXTERNAL ALARM INPUTS AND OUTPUTS
G1038Z0
G1038Z0
figure 5-2 Flange connector, 5 poles
figure 5-3 Flange connector, 7 poles
The alarm outputs (open collector output 5 V / 1 mA) are normally low. In case of an
alarm they are high active (5 V). They can be used to monitor alarms with an external
alarm indicator.
The +28 V pin (for its location see figure 5-3 Flange connector, 7 poles) is protected
by a 500 mA thermoswitch. In case of exceeding this current between pin 7 and GND
and/or in case of a failure of the VSWR module, the thermoswitch turns into a high-
resistive status. Then no fuse needs to be replaced. Just wait a few minutes until the
thermoswitch reaches the normal operating temperature again.
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Note:
The manufacturer / supplier of this system accepts no liability for
damage caused by equipment connected to external outputs or by
effects from such equipment.
damage caused by equipment connected to external outputs or by
effects from such equipment.