BIRD ACM500I M Series, Руководство по эксплуатации

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ACMI Operation Manual
25
VSWR Alarm Enable —
Check the VSWR Alarm Enable box to monitor the
VSWR reading and activate the alarm if the VSWR is slightly greater than the trip
point for more than 30 seconds, or immediately if the VSWR is much greater
than the Trip Point.
VSWR Relay Energized on Alarm —
Checking this box will cause the
VSWR alarm relay to energize if the VSWR alarm is active and de-energize when
the alarm is not active. Unchecking this box will cause the VSWR alarm relay to
de-energize when the alarm is active and energize when it is not active.
Unchecking this box ensures a fail-safe alarm configuration in the event of loss
of power to the ACMI.
This setting will determine which relay contact will be open and which will be
closed in the event of an alarm condition and influence the hard-wiring of the
VSWR relay contacts. Refer to the power/alarm connection instructions.
VSWR trip point —
Specify the VSWR value that will cause a VSWR alarm
(select values from the drop-down list). This value is adjustable from 1.3 to 2.5
by increments of 0.1. Check the VSWR Alarm Enabled on Zero Power checkbox
to allow the VSWR alarm to trigger at very low forward power (<
2.5% of full
scale power).
High Power Alarm (forward power only) —
Check the Enable box and
specify the percentage of full scale at which an alarm will occur. The high power
value must be greater than the low power value. The maximum value is 125% of
full scale power. The alarm setpoint is entered as a percent of full scale. For
example, if you have a 500W full scale unit and would like an alarm when the
forward power exceeds 375 W, the alarm setpoint would be 375
/ 500 x 100 or
75%. Enter 75 in the field and check the Enable High Power Alarm checkbox.
Low Power Alarm (forward power only) —
Check the Enable box and
specify the percentage of full scale at which an alarm will occur. The low power
value must be less than the high power value. The minimum is 0%.
Power Relay Energized on Alarm —
Checking this box will cause the
Power alarm relay to energize if the Power alarm is active and de-energize when
the alarm is not active. Unchecking this box will cause the Power alarm relay to
de-energize when the alarm is active and energize when it is not active.
Unchecking this box ensures a fail-safe alarm configuration in the event of loss
of power to the ACMI.
This setting will determine which relay contact will be open and which will be
closed in the event of an alarm condition and influence the hard-wiring of the
Power relay contacts. Refer to the power/alarm connection instructions.
Trigger Alarm Button —
Use the Trigger Alarm button to force an alarm on
the ACMI. You can use this function to test the response of your system to alarm
indicators (messages, relay, TTL outputs). If the Config password is enabled, you
will be required to enter the password before you can test the alarm settings.
Factory Defaults —
Use the Factory Defaults button to return the ACMI
configuration to factory default conditions (Latch Alarms and VSWR Alarm
Enable checked, VSWR Trip Point =1.8, power alarms, and PTT disabled).