Chapter 16
Performing RFoCPRI Testing
JD700B Series User’s Guide
619
Configuring test parameters
Setting frequency
You can set the frequency with either frequency or channel number. If a frequency to be set matches to the
frequency corresponding to the selected channel standard, the instrument calculates its channel number
and updates the screen with it automatically.
Procedure
To set the center frequency:
1
Press the
FREQ/DIST
hard key.
2
Toggle the
Unit
soft key to
Freq
.
3
Press the
Center Frequency
soft key.
4
Enter a value by using the numeric keys or the rotary knob.
5
Select the unit:
GHz
,
MHz
,
kHz
, or
Hz
.
6
Optional
. To define the amount of frequency increment for the rotary knob, complete the following
steps:
Press the
Frequency Step
soft key.
Enter a value by using the numeric keys or the rotary knob.
Press the unit:
GHz
,
MHz
,
kHz
, or
Hz
.
To set the channel number:
1
Press the
FREQ/DIST
hard key.
2
Toggle the
Unit
soft key to
Channel
.
NOTE
Selecting
Channel
sets the standard channel to
Band Global
automatically so that you
can set the
Channel Number
without choosing a standard channel band from the list.
3
Press the
Channel Number
soft key.
4
Enter a value by using the numeric keys or the rotary knob.
5
Press the
Enter
soft key.
The instrument automatically displays the corresponding center frequency value for the selected
channel number.
6
Optional
. To define the amount of channel increment for the rotary knob, complete the following
steps:
Press the
Channel Step
soft key.
Enter a value by using the numeric keys or the rotary knob.
Press the
Enter
soft key.
Setting amplitude
You can set the reference automatically or manually to optimize the display of the trace, as you desire.
Procedure
1
Press the
AMP/SCALE
hard key.
2
Complete one of the followings:
To optimize the Y-axis scale automatically, press the
Auto Scale
soft key.
To set the maximum reference value on the Y-axis manually, complete the following steps:
Press the
Reference Level
soft key.
Enter a value by using the numeric keys or the rotary knob with 10 dB increments.
Press the unit soft key or the
ENTER
hard key.
NOTE
In the
Control Channel
,
Subframe
, and
Frame
measurement modes, you can select the
reference option between
Relative
and
Absolute
instead.