Bird - The RF Experts
ACM Series (Serial Port)
ACM Series, Antenna and Cable Monitors
ACM Series (Serial Port)

Antenna & Cable Fault Detection


Bird’s® Antenna & Cable Monitor is the reliable solution for monitoring your RF transmission systems. Service providers and self maintained end user can depend on this monitor and alarm to keep their critical sites up and running.

Designed to detect antenna and cable faults that transmitterinternal VSWR monitors may not detect. An integral coupler with high directivity optimizes measurement accuracy. It measures small changes in antenna VSWR with high feeder and interface losses and provides accurate RF in-line power measurement functionality.

FEATURES
  • Provides multiple alarms if an antenna or cable failure should occur.
  • Measures true average power of signals with high peak-to-average characteristics - works with any modulation.
  • Monitors transmitter output power and includes low or high power alarms.
  • Remote access with both monitoring and control via serial and ethernet interfaces.
  • Included as standard Push-To-Talk (PTT) input to avoid false alarm triggering when the transmitter (radio) is not keyed.
APPLICATIONS
3G, Low Power Broadcast, CDMA & CDMA 2000, Edge, GSM, Microwave, Paging, TDMA, TETRA & TETRAPOL, VHF & UHF, LMR and WLL

Product Selection Guide

___ - ___ - ___ - ___ - ___ - ___

Example: ACM-L1-NM-NM-T-L = ACM (2.5 to 100 W power range), 136 to 225 MHz frequency range, N Male Input Connector, N Male Output Connector,TNC Female Monitor port connector, with ± (11 to 25) VDC input voltage.

Model (power range) Freq. Range (MHz) RF Input Connector RF Output Connector Monitor Port Connector Input Voltage (VDC)
ACM
(2.5 to 100 W)
ACM 500
(12.5 to 500 W)
L0= 108-144
L1
= 136 to 225
L2 = 225 to 520
M = 470 to 960
*H = 960 to 2400
NM = N (M)
NF = N (F)
DM = 7/16 DIN (M)
DF = 7/16 DIN (F)
NM = N (M)
NF = N (F)
DM = 7/16 DIN (M)
DF = 7/16 DIN (F)
N = N (F)
T = TNC (F)
B = BNC (F)
L = ± (11 to 25)
H = ± (36 to 72)

 

ACM Rack Configurations

Part Number   Description Compatiable Series Units Supported
ACM-RACKU Rack Shelf, Includes 15V Power Supply ACM-x-xxxxxL only 2
ACM-RACK Rack Shelf, Requires Customer Provided 48V Power Supply ACM-x-xxxxxH only 2

Note: ACM-L2-DFDFTL-12SP can’t be used with rack mount option

ACM Series, Antenna and Cable Monitors
ACM Series (Serial Port)
product specifications:
Item No
ACM Series (Serial Port)
Item Name
Antenna and Cable Monitors
Frequency Range
108-144 MHz
136-225 MHz
225-520 MHz
470-960 MHz
960-2400 MHz
Measurement Range
ACM: 2.5 to 100 W
ACM500: 12.5 to 500 W
Power Accuracy
108-144 MHz, ± 8%
136-225 MHz, ± 10%
225-520 MHz, ± 8%
470-960 MHz, ± 5%
960-2400 MHz, ± 5%
Insertion Loss
108-960 MHz: 0.1 dB
960-2400 MHz: 0.15 dB
VSWR
108-960 MHz: 1.07 (N or 7/6 DIN Connectors)
960-2400 MHz: 1.1 (N Connectors)
960-2000 MHz: 1.1 (7/16 DIN Connectors)
2000 to 2400 MHz: 1.2 (7/16 DIN Connectors)
Reflected Directivity
108-960 MHz: 30 dB
960-2400 MHz: 26 dB
Alarm Characteristics VSWR
Alarm Set Point
1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 to 1
Relay Contact Type
Dry, Form C, relay contacts, common, normally open, normally closed
Contact Rating: 100 VDC @ 0.5A
Visual Alarm: Red LED will illuminate to indicate alarm
Stimulus: VSWR set point exceeded, response time proportional to overload
Reset: Local Mechanical reset switch Remote input (Reset if VDC is 0 to +0.8 volts)
Push to Talk: +5/+24 VDC to activate
System
General: Thruline® sensor for direct insertion in 50-ohm line
Maximum Line Section Power: Dependent on frequency and connector
Passive Intermodulation Products: Less than -130 dBc
Power Requirements: ±11 to 26 VDC or ±36 to 72 VDC
Interfaces
Connectors: Female N, TNC or BNC
Coupling: -63 dB approx., subject to changes in full-scale power
RF Connectors: N or 7/16 DIN
Alarm/Power Connector: 15-pin Female “D” connector

Serial Port: RS-232, 9600 baud, no parity, 8 data bits, 1 stop bit, no handshake

Protocols: ARP, UDP/IP, DHCP, BOOTP, Auto IP, HTTP,and SNMP

LED Lights:
Left LED: Amber: 10 Mbps. Green: 100 Mbps
Right LED: Amber: Half-duplex. Green: Full-duplex

Security: 128-bit encryption
Environmental
Temperature Range
Operating: 32 to 122 °F (0 to 50 °C)
Storage: -4 to 176 °F (-20 to 80 °C)

Humidity: 0 to 95% maximum (non-condensing)
Altitude: Up to 3000 meters above sea level
Physical
Size (with connectors) 7.6" x 7.2" x 1.06" (192 x 183 x 27 mm)
Weight; Less than 2 lb (0.9 kg)
Certifications
CE Compliant
EMC: European Standard EN 61326-1:1997 + Addendums A1: 1998 and A2:2001 - Electrical equip. for measurement
Safety: European Standard EN 61010-1:2001- Safety Requirements - Electrical equip. for measurement, control and laboratory use - ECM Requirements
Software
PC software, displays Antenna & Cable Monitor readings and alarms, controls alarms set points (serial only)
Rack Mounting
See Rack Configuration table above
compatible devices:
ACM-RACK
ACM Series Rack Kit