Bird Technologies ACM Datasheet

Antenna and Cable Monitor

ACM Series

Now With

Ethernet!

Bird’s® Antenna & Cable Monitor is the solution for monitoring your RF transmission systems. Service providers
and self maintained end user’s can rely on this monitor and alarm to keep their critical sites up and running.
Designed to detect antenna and cable faults that transmitter-internal VSWR monitors may not detect, it also
provides accurate RF in-line power measurement functionality.

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Models available from 136-225 MHz, 225-520 MHz, 470-960 MHz, 960-2400 MHz Accurately monitors your antenna and
cable system VSWR levels.

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Integral coupler with high directivity optimizes measurement accuracy. Measures small changes in antenna VSWR with high

feeder and interface losses.

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Provides multiple alarms if an antenna or cable failure should occur.

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Monitors transmitter output power and includes low or high power alarms.

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Measures true average power of signals with high peak-to-average characteristics - works with any modulation!

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Remote access with both monitoring and control via serial and ethernet interfaces.

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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,

Government, Microwave, Military, Paging, Public Safety, Rail,

TDMA, TETRA, TETRAPOL, VHF & UHF, LMR and WLL.

POWER MEASUREMENT SPECIFICATIONS

Frequency Range 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
ACMI: 2.5 to 100 W
ACMI500: 12.5 to 500 W

Power Accuracy 136-225 MHz, ±10%

225-520 MHz, ±8%
470-960 MHz, ±5%
960-2400 MHz, ±5%

Insertion Loss 0.1 dB, 136-960 MHz

0.15 dB 960-2400 MHz

VSWR 1.07, 136 to 960 MHz

1.1, 960 to 2400 MHz, N Connectors

1.1, 960 to 2000 MHz, 7/16 Connectors

1.2, 2000 to 2400 MHz, 7/16 Connectors

Reected Directivity 30 dB, 136 to 960 MHz

26 dB, 960 to 2400 MHz

Antenna and Cable Monitor

ACM Series

VSWR ALARM CHARACTERISTICS

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

MONITOR PORTS

Connectors Female N, TNC or BNC

Coupling -63 dB approx., Subject to changes in

full-scale power

INTERFACE SPECIFICATIONS

ACM: RS-232

Serial Port

ACMI: Ethernet Port

Network Interface

Compatibility

Protocols

Left LED

Right LED

Security

9600 baud, no parity, 8 data birts,
1 stop bit, no handshake

10/100-BASE-T (auto-sensing)
Ethernet Version 2.0 / IEEE 802.3
ARP, UDP/IP, DHCP, BOOTP, Auto IP, HTTP, and SNMP
Amber: 10 Mbps. Green: 100 Mbps
Amber: Half-duplex. Green: Full-duplex
128-bit encryption

ACM SERIAL PART NUMBER DEFINITION

PHYSICAL AND ENVIRONMENTAL SPECIFICATIONS

General Thruline® sensor for direct insertion in 50-ohm line

RF Connectors N or 7/16 DIN, see chart below

Maximum Line Section

Alarm/Power Connector 15-pin Female “D” connector
Operating Temperature 0°C to 50°C

Storage Temperature -20°C to 80°C

Humidty 0 to 95% maximum (non-condensing)

Altitude Up to 3000 meters above sea level

Passive Intermodulation

Products

Power Requirements ACM +/- 11 to 26 VDC or +/- 36 to 72 VDC

Dimensions 4.8” (121mm) wide (7.6” (192mm) with connectors),

Weight Less than 2 lbs. (0.9 kg)

Dependent on frequency and connector

Power

Less than -130 dBc

ACMI +/- 9 to 18 VDC or +/- 18 to 36 VDC or
+/- 36 to 72 VDC

7.2” (183mm) high, 1.06“ (27mm) deep

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.

ACCESSORIES

7005A970 PC software, displays Antenna & Cable Monitor readings and

ACM-RACK 19” rack shelf, mounts up to two Antenna & Cable Monitors

ACM-RACKU 19” rack shelf with universal power supply (100 to 240 VAC, 50 to 60 Hz)

alarms, controls alarms set points (serial only)

mounts up to two +11 to +26 VDC

MODEL (POWER RANGE) FREQ. RANGE (MHz) RF INPUT CONN. RF OUTPUT CONN. MONITOR PORT CONN. INPUT VOLTAGE

ACM (2.5 - 100 W) L1 = 136 - 225 MHz NM = N Male NM = N Male N = N Female L = +/- (11 to 25) VDC
ACM 500 (12.5 - 500 W) L2 = 225 - 520 MHz NF = N Female NF = N Female T = TNC Female H= +/- (36 to 72) VDC

M = 470 - 960 MHz DM = 7/16 DIN Male DM = 7/16 DIN Male B = BNC Female
*H = 960 - 2400 MHz DF = 7/16 DIN Female DF = 7/16 DIN Female

*H Frequency Band Unavailable with 500 W Version.

ACMI ETHERNET PART NUMBER DEFINITION

MODEL (POWER RANGE) FREQ. RANGE (MHz) RF INPUT CONN. RF OUTPUT CONN. MONITOR PORT CONN. INPUT VOLTAGE

ACMI (2.5 - 100 W) L1 = 136 - 225 MHz NM = N Male NM = N Male N = N Female L = +/- (9 to 18) VDC
ACMI 500 (12.5 - 500 W) L2 = 225 - 520 MHz NF = N Female NF = N Female T = TNC Female M= +/- (18 to 36) VDC

M = 470 - 960 MHz DM = 7/16 DIN Male DM = 7/16 DIN Male B = BNC Female H = +/- (36 to 72) VDC
*H = 960 - 2400 MHz DF = 7/16 DIN Female DF = 7/16 DIN Female

*H Frequency Band Unavailable with 500 W Version.

30303 Aurora Rd. Solon, OH 44139 866.695.4569 www.bird-technologies.com