17
Chapter 3
Measure Match Mode
Match measurement verifies and monitors the match conditions in the antenna
system at various frequencies. The results are shown on an x-y graph.
Frequency is shown on the x-axis and Return Loss or SWR is shown on the y-axis.
Before making a Match Measurement, be sure to have a Calibration
Combination (Cal Combo), all necessary cables with adapters of the correct size
and connector type.
Selecting Measure Match Modes and Measurement Units
1.
Press trace measurement field to display menu.
2.
Select one of the following from the Measurement Mode menu:
ReturnLoss
SWR
Note:
When making a match measurement, select units for the Y
(vertical) scale: SWR for standing wave ratio or Return Loss for dB.
Figure
8
Selecting the Measure Match Mode
3.
Select the number of Data Measurement points.
4.
Set the Frequency range.
Note:
Frequency range should be greater than the normal range
of the antenna.
Example -
For a 450 MHz antenna, set the start frequency at 400
and the stop frequency at 500 MHz, for an 800 MHz antenna, set
the start frequency at 700 and the stop frequency at 1,100 MHz.
5.
Calibrate the SiteHawk. See
.
Note:
Changing frequency settings will automatically turn cali-
bration off. Always set the frequency before calibrating the unit.
