Bird Technologies ACMI - Manual (Page 13)

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Chapter 1 Introduction
Designed for 50 ohm coaxial transmission lines, the Bird Antenna & Cable Monitor is
the solution for monitoring transmission antenna systems. Service providers and
end users can rely on it 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 in-line power measurement functionality.
Features

Measures forward and reflected power as well as VSWR and Return Loss.

Measures true average power of pulses with high peak-to-average
ratios - works with any modulation.

When monitoring transmitter output power, alarms available for low
or high power.

Accurately monitors antenna and cable system VSWR. Alarm triggered
if antenna or cable fails.

Integral coupler measures small changes in VSWR through high feeder
and interface losses.
Note:
High directivity maximizes measurement accuracy.

Sampling ports allow signal measurements without requiring system
downtime.

Excellent passive intermod allows the unit to be inserted into multi-
channel systems with a single Tx/Rx antenna with no desensing or deg-
radation of receiver performance.

Can be rack mounted at the output of transmitter combiner or linear
power amplifier.

Setup and operation via built-in PCTool software.
Items Supplied

ACMI Unit

Instruction Manual
Optional Accessories
Note:
See “Replacement Parts” on page 33 for part numbers of
accessories.
PCTool Software -
PC software for locating ACMI units on a network.
DB-15 Power/Alarm Cables -
Connects the Antenna Monitor to a power
supply and to external controllers. 50 feet long with male/female connectors.
Note:
Refer to Figure 3 and Figure 4 on page 8 for pin layout.
DB-15 Interface Connector -
Allows easy custom data cable connections to
the ACM.