Bird Electronic 4314B, Operation Manual

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11
Chapter 4 Operating Instructions
Zero Adjust Meter
Before taking any readings with the wattmeter, it is necessary to zero
the meter under no-power conditions.
1. Rotate Plug-In Element so that the arrow points down.
2. Set wattmeter’s controls to ON and CW modes.
3. Using a small screwdriver, turn the meter’s zero adjust screw
clockwise or counterclockwise so that the meterpointer aligns with
the zero mark on the meter scale.
WARNING
Exposure to RF power radiation and the possibility of RF shock or
burns exists with some operating conditions. Always be sure to
turn off the transmitter when connecting or disconnecting a
wattmeter.
Be sure the transmission line is terminated into a load or antenna.
When a Plug-In Element is removed from the RF line socket, the
line section center conductor is exposed. Do not put fingers or other
objects into the Plug-In Element socket while RF power is applied.
CAUTION
Use reasonable care in handling. Do not drop or subject the
wattmeter or elements to hard blows as accuracy may be impaired or
other damage may result.
CAUTION
Do not apply RF power to the wattmeter in excess of the full scale
range of the element.