ASM_APP_NOTE_Applications_AN-41757-1 - page 10-11

Copyright RF Industries Pty Ltd 2014. Subject to change without notice.
rfiwireless.com.au
10
Copyright RF Industries Pty Ltd 2014. Subject to change without notice.
rfiwireless.com.au
11
• Allows most PMI’s to be performed non-intrusively, without a site outage impacting
network users (i.e. no more scheduled network outages)
• Observe network RF performance locally, or remotely, via a user friendly webserver GUI - with
SNMP, SMTP (Email), Manager Messages, and relay outputs available for alarm notifications.
• Measure and monitor the output of high power multi-carrier transmit combiners on a per-
channel basis – without the limitations of in-line wattmeters and RF “samplers”
• Measure and monitor other network RF parameters (receive levels, system isolation, etc)
• Allows and Tx and Rx frequencies to be analysed to assist in the identification of
interference (IM, desense, etc), illegal carriers, frequency re-use problems and other
performance impacting issues.
• Measure and monitor site alarms and equipment operating status’ using (optional) Site Alarm
Module(s) using temperature, analogue and digital inputs. Map individual ASM channel alarms
to SAM alarm relay outputs for remote control, antenna change-over or hot/standby applications.
• Store historical data for later display or download
• 24x7 non-intrusive monitoring and the setting of minimum and/or maximum alarm thresholds
allows the speedy detection and notification of performance-impacting changes in the networks
performance
• Configuration data (frequencies, alarm thresholds, etc) is easily entered via an integral
webserver GUI, or via a Configuration File Load/Save selection.
• Allows intuitive assessment of site faults prior to despatching personnel to site
• Assists in determining the need for specialised personnel (i.e. riggers) and likely required
spares (such as antennas) to be determined prior to travelling to site in response to a
reported fault, minimising unnecessary maintenance costs.
• Reduces maintenance effort by enabling better analysis of the likely fault cause prior to deploying
resources to site, and allows appropriate spares to be taken to site
• Allows earlier planning of network outages if required for fault rectification. Reduces
‘unplanned’ outages on short notice
• Detects the onset of fault conditions “as they occur” and often before network user’s notice the
impact of the fault – allowing a faster response to be initiated and resulting in better Mean Time
To Repair (MTTR) performance to be achieved
• Facilitates a more detailed assessment of the impact of the fault on network performance.
Is it a minor reduction of coverage, is it on just one channel, or is it a more extensive
impact on the network’s grade of service?
• Provides detailed data of ongoing network performance, faults and restorations – within the
RF environment. Downloadable log files allow the importation and processing of data into
spreadsheets, producing network performance, maintenance and other KPI reports.
Features and Benefits
The Antenna System Monitor (ASM) provides channel specific forward and reflected transmitted power monitoring, Rx
RSSI levels for up to 80 channels and Tx to Rx antenna isolation measurement. Four paired sets of forward and reflected
Tx power measurement inputs facilitate monitoring via high power in-line couplers. The low loss Antenna Line Coupler
is inserted after the Tx combiner on the antenna feeder cable. All frequencies, channel bandwidths and alarm level
thresholds are software definable on a per-channel basis. A DB15 rear mounted connector provides alarm reporting
outputs that can be hardwired into most alarm reporting facilities. The LED’s on the front panel of the APM allow visual
confirmation of the hardwired alarm outputs. Configuration, diagnostics and communication management is facilitated
through the use of an on-board webserver GUI. Optional Site Alarm Monitors (SAMs) may be added to enhance
measurement and alarm output capabilities.
n
Individual channel monitoring of Tx forward and reflected power and Rx levels in multi-channel, multi-carrier systems.
n
Non-intrusive 24x7 measurement, monitoring and alarm reporting of a system’s RF performance parameters.
n
Capable of monitoring up to 80 channels across multiple combiner systems
n
Analogue, Digital, FDMA and TDMA compatible
n
Local or Remote configuration and firmware updating via RJ45 Ethernet port and integral webserver.
n
ASM supplied with one Antenna Line Coupler, additional couplers may be ordered separately if required.
REAR VIEW
Antenna System Monitor
ASM
Frequency Range (4 separate frequency models)
132-174MHz, 380-520MHz, 746-870MHz or 870-960MHz
Maximum number of monitored channels
80
Available Tx forward power / VSWR monitoring port inputs
4 pairs
Available Rx RSSI level monitoring ports
1
Rx monitoring port input range
-110dBm to -50dBm
Frequency channel step size (Tx & Rx)
6.25kHz
Channel measurement bandwidths
12.5kHz and 25kHz
Max spurious or IM products
-30dBm
Conducted emissions
Complies with CISPR22 Part B, FCC Part 15 (15.207)
Radiated emissions
Complies with CISPR22 Part B, FCC Part 15 (15.209)
RF Termination connectors
N (F)
Communication interface ports
2 x rear mounted TCP/IP Ethernet ports (RJ45)
Internal alarm relay contacts output connector
Rear mounted DB15 (M)
Visual alarm notification
Front panel mounted LED’s
Configurable alarms
Summary Fault / Tx FWD power / VSWR / RSSI & Ant Isolation
Alarm support
GUI / Relay Output / SNMP V2c Traps / SMTP Email / UDP Packets
Power supply options
11-36VDC, 36-60VDC or 100-240VAC
DC power connector
Polarised 2-pin Phoenix connector
Mounting
2RU 19” rack mounting
Dimensions
483x50x89mm / 19x2x3.5” (incl connectors)
Weight
< 2kgs / 4.4lbs
Operational temperature range
-10° C to +60° C / 14° F to 140° F
FRONT VIEW
Site Alarm Monitor (optional)
SAM
Temperature/Analogue/Digital External Inputs
4
Digital / PTT Inputs
10
Alarm Outputs
10 Form C Dry Relay (NC/CMN/NO)
Power supply options
11-36VDC, 36-60VDC or 100-240VAC
Mounting
1RU 19” rack mounting
Expansion
10 SAMs per ASM
For more detailed information on the ASM and SAM products please refer to the User Manuals, Product Briefs, Service Bulletins, Application Notes,
Firmware Updates, SNMP MIB files and other support information located at
.
Antenna System Monitor
132-174MHz / 380-520MHz / 746-870MHz / 870-960MHz
Performance Monitoring of FWD and RFL Tx Power, Receive RSSI and Tx-to-Rx Antenna Isolation
ASM1317 / ASM3852 / ASM7487 / ASM8796
1,2-3,4-5,6-7,8-9 12
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