Cbda Monitor And Alarm - Dekolink MW-CBDA-SMR-800-900-1W65 Installation And Operating Instructions Manual

CBDA Monitor and Alarm

The two main active elements are the Downlink Power Amplifier and the Uplink power
amplifier. Each CBDA has a monitor circuit to monitor these elements and give alarm signal
when there is a deviation from normal operation. The summarized alarm output of the monitor
card is sent to a D-type connector on the front panel.
The monitor circuit performs the following functions:
• Monitors the current of uplink power amplifier. If the current is below or above the
specified limits then an automatic alarm function is provided by a LED on the
CBDA cover which illuminates and by dry contacts of a relay.
• Monitors the downlink RF output power. If the output power is over 10 dB below
the rated value then an alarm function is provided by a LED on the CBDA cover
which illuminates and by dry contacts of a relay.
• The relay arms are normally open, they close when power goes on (at no faults).
Whenever any fault occurs or when the power is cut off from the CBDA the
relay arms open. The relay arms are connected to pins 2,4 of a 9 pin D type
male connector on the front panel of the CBDA for remote sensing of faults.
Pin 2 and 3 of the D type connector provide complimentary relay alarm function; short
at fault and open at no fault.
• The alarm LEDs (red) are displayed on the CBDA cover. The green led is power
on indication.
Dekolink Wireless Ltd.;16 Bazel St.Qiryat-Arieh Petah-Tikva Israel, 49510
Tel- 972-3-9180-180; Fax-972-3-
Web site-
www.dekolink.com
9180 - 190 ; Email-marketing@dekolink.com;
r
ev 0 11/
04
page 7 of 16