Plug-in element selection and insertion, Measurements, Cw power measurements – Bird Technologies 4314C User Manual
Page 22: Peak power measurements, Cw power measurements peak power measurements
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Plug-In Element Selection and Insertion
The elements determine the power range to be read on the meter scale. The
major markings (50 W, 100 W, etc.) are the full scale power value for that ele-
ment. Elements are also marked for frequency range.
Note:
The transmitter frequency must be within the band of the ele-
ment used.
•
RF power measurements are made with the insertion of a Plug-In Ele-
ment. Insert the element into the line section’s socket.
•
Forward power is indicated when the arrow on the element points in
the direction of power flow; from transmitter to load. Reflected power
measurements are made with the element rotated 180 and the arrow
pointing towards the transmitter.
Note:
The element must be rotated fully when power measurements
are being made.
The index pin protruding from the element’s body should rest against the stop
on the line section in both the forward and reflected position. The small catch in
the lower left hand corner of the casting face should press down on the shoulder
of the Plug-In Element. This will keep the Plug-In Element in proper alignment
and ensure good contact with the dc pickup, the lower edge of the element and
the line section body.
Measurements
CW Power Measurements
1.
Set the wattmeter control to CW mode.
2.
Read the appropriate meter scale corresponding to the element full-scale value.
Example - A 2500 Watt element would use the 25 scale,
whereas a 5 Watt element would use the 50 scale.
Peak Power Measurements
1.
Press the ON/BATTERY button to test the battery voltage level.
Note:
If the pointer of the meter indicates below the battery test
zone, the batteries must be replaced. See “Replacing the Batteries” on
Note:
If the push button is pressed continuously for a length of time
exceeding 10 seconds, the battery test load will be disconnected from
the batteries. Do not read the battery level after this time because
once the load has been disconnected, the battery test reading will no
longer be accurate.
2.
Set CW/PEAK switch to PEAK mode.
Note:
The small indicating light to the left of “Peak” will be lit to
show Peak Mode Operation.
3.
Read the appropriate meter scale corresponding to the element full-scale value.