Chapter 13 RF Power Testing
106
CellAdvisor JD720C User's Manual
Setting parameters
You can set measurement parameters such as frequency, external offset, resolution, display
mode, relative reference, and period.
Procedure
1
Press the
SETUP
hard key and then touch the
Setting
tab.
The Setting setup window appears.
2
To set the frequency to be measured, complete the following steps:
a
Select the cell next to the
Frequency
.
b
Enter a value by using the numeric keys or the rotary knob.
It must be within the frequency range of the connected power sensor.
See
“RF power sensors” on page 169 for more information.
3
To set the external offset, complete the following steps:
a
Select the cell next to the
External Offset
.
b
Enter a value between
-100
and
100
by using the numeric keys or the rotary knob.
4
To set the number of decimal places to be expressed for your measurement result, select the
Resolution
option from the choices:
0
,
1
, and
2
.
5
To set the display method, select the mode option from the choices:
Absolute
and
Relative
.
This setting is applicable only to the average and peak value of the directional power sensors.
6
If you select the
Relative
mode, you can choose the
Relative Reference
option from the
following choices
–
Last
to use the last measurement value as a reference
–
Manual
to set a reference value manually
7
To set a time period for the power measurement to be averaged, tap the drop-down list button and
then select the
Period
option from the choices:
< 4.5 ms
,
< 9.5 ms
,
< 19 ms
,
< 38 ms
, and
< 76 ms
.
8
Touch the drop-down list button for
Technology
and then select your choice from the list.
9
Tap the
Apply
button in the lower-right corner of the setup screen to save the change(s).
Figure 64
Setting window for RF power measurements
