Bird Technologies 4314B - Manual (Page 23)

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.