BIRD THRULINE 4021, Инструкция

Страница: 16 / 62

Bird 4421 RF Power Meter
6
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.
Handle Operation
The handle on the Bird 4421 can be set to four different positions (see
Figure 4). To adjust the handle, press the center buttons on both
sides. Releasing the buttons will lock the handle into position.
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.
Figure 4
Handle Positions