Bird Technologies 5010 - Manual (Page 2)

Connecting Sensor
Although unlikely, it is possible to corrupt the firmware in the power
sensor (DPS) by connecting it to a power meter, such as the Bird
Model 5000 (DPM) or a Bird Site Analyzer (SA), while the power
meter is turned on. To prevent this, make sure that the power meter is
turned off before connecting it to the power sensor. When you are done
making measurements, turn the power meter off before disconnecting
the power sensor.
Element Orientation
The element in the Forward socket should be inserted with its arrow
pointing in the direction of forward power, as shown below. The
element in the Reflected socket should be inserted with its arrow
pointing in the direction of reverse power. The forward element must
have a power rating 10x the reverse element power rating for
optimum results.
CAUTION
Do not connect or disconnect sensor interface cable to the DPS
while the DPM or SA is on. Always turn off the power meter before
connecting or disconnecting a sensor.
WARNING
Leaking RF energy is a potential health hazard.
Never attempt to connect or disconnect equipment from the
transmission line while RF power is being applied. Severe burns,
electrical shock, or death can occur.