6
Chapter 2
Installation
This chapter provides information about preparing the Bird 4421 for use.
Sensor Connection
1.
Turn OFF the ON/OFF rocker switch on the meter’s
rear
panel.
2.
Align the latch on the cable with the notch of the “Power Sensor” socket on the power meter’s rear panel.
3.
Insert the cable until it clicks into place.
4.
Connect the other end of the sensor cable to the sensor.
RF Line Connection
Connect the end of the power sensor labeled “SOURCE” to the RF source. Connect the end labeled “LOAD” to the
load or antenna. Reversing these connections will cause measurement errors.
Panel Mounting the 4421 Power Meter
You can install the 4421 Power Meter in an equipment rack if you have the optional panel mount kit (refer to
"Optional Accessories" on page 1
). The panel mount kit includes complete installation instructions.
Figure
5
on page
7
shows the overall dimensions and mounting points for a 4421 Power Meter installed in a panel mount
kit.
Note:
The power supply interrupt switch for the 4421 Power Meter is located on the rear panel. When
you install a unit in a panel mount kit, you need to provide a means to interrupt the power supply that
is easily accessible to the user (such as a switch mounted in the panel).
CAUTION
Changing the sensor’s connectors will invalidate calibration data, and may reduce the
maximum power rating of the unit.
CAUTION
The Bird 4421 must be powered off when connecting or disconnecting the power
sensor from the power meter.
WARNING
Never attempt to connect or disconnect RF equipment from the transmission line
while RF power is being applied.
Leaking RF energy is a potential health hazard.
CAUTION
Do not use the power sensor with a load VSWR greater then 2:1. Damage to the power
meter, power sensor, or the RF power source could occur.
