User's Manual

Table Of Contents
SMR 700 800 HIGH POWER PS NFPA CLASS A SIGNAL BOOSTER
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless Coverage
Date: 22-Dec-16
www.cobham.com/wireless
Doc. No.00068CDUM Rev. 2.3 Page | 56
Alarm Fault and most probable cause and Recommendation
System Mute
Description. Generates an alarm when Booster amplification is
automatically
muted.
Possible causes: Temperature failure, Synthesizer failure,
Hardware failure, High RSSI power DL/UL when the shutdown mechanizm is on.
Recommended action: Check the LED and
other alarm from the Booster.
Contact Cobham Wireless Support
User Mute Description: Manual shutdown performed by operator from the Web GUI.
Recommended action: Review unit’s log
Built In Test Possible causes: Hardware failure, Circuitry failure, Software failure
Recommended action: Contact Cobham Wireless Support
Temperature
Description:
Booster temperature is exceedingly high due to excessive external
heat.
Recommended action:
Check the Booster case for external causes (sun, hot
environment, air flow is blocked). Eliminate the reason for excessive heat.
Donor Power
Too Low
Description: Signal from the Donor antenna (DL) is too low - relatively to the
desired output signal configured by the user.
Recommended action:
Check the Donor/Base connections and antenna position. Check the signal level of
the Donor/Base antenna.
If the alarm is still raised, then you can raise, the value of the DL Output Threshold
Delta[dBm] as needed
.
(PAmp)
Current
Description: Power Amplifier current is not within limits (too high or too low). If
the Mute option is enabled, then this is not a fault since it indicates low Power
Amplifier current caused by the mute.
Recommended action: Check the LEDs status in the Booster and Contact
Cobham Wireless service support.
RSSI
Description: Generates an alarm when a high
donor
input signal causes system
gain reduction
VSWR
Description: This alarm is triggered when the return loss of the Downlink or
Uplink antenna or cable connection exceed the allowed limit.
This alarm provides an indication of the status of the cable/antenna connected to
the antenna. If a cable/antenna is defective, the VSWR is decreased and the alarm
is triggered.
Recommended action: Check the cable.