JD700B Series User’s Guide
671
NOTE
The instrument displays a measurement result with the set value reflected. For example,
if you set it to 40 dB, the measurement result compensates 40 dB.
4
To change the setting of the scale per division, complete the following steps:
Select
More (1/2) > Scale/Div
.
Enter a value between 1 and 20 by using the numeric keys.
Press the
dB
soft key to complete the entry.
5
To change the scale unit, select
More (1/2) > Units
, and then select the display unit option from
the choices:
dBm
,
dBV
,
dBmV
,
dBµV
,
V
, and
W
.
The scale unit on the screen changes accordingly.
NOTE
The Scale/Div and Units menus are available in the Spectrum and RF Analysis modes.
Setting average
In the spectrum and RF analysis, you can set the number of measurements to be averaged for the trace
presentation. A maximum of 100 times of averaging can be set. When the averaging reaches to your setting,
a new measurement value replaces the measurement value in sequence from the earliest.
Procedure
1
Press the
BW/AVG
hard key.
2
Press the
Average
soft key.
3
Enter a value between 1 and 100 as needed by using the numeric keys.
4
Press the
Enter
soft key.
Setting sweep mode
The default setting is
Continue
to sweep continuously for most on-going measurements. If you want to hold
the measurement or get a single sweep, you can change the sweep mode.
Procedure
1
Press the
SWEEP
hot key.
2
Do the following:
To select the single sweep mode, complete the following steps:
Toggle the
Sweep Mode
soft key and select
Single
. You can also use the
HOLD
hot
key.
The letter
HOLD
in red appears and the sweeping is paused.
To get a new measurement, press the
Sweep Once
soft key.
To return to the continuous sweep mode, toggle the
Sweep Mode
soft key and select
Continue
. You can also use the
HOLD
hot key.
The letter
HOLD
in red disappears and the sweeping resumes.
Setting measure setup
Procedure
1
Press the
MEASURE SETUP
hot key
2
Press the
Link Rate
soft key to set the line rate of the OBSAI RP3 interface between the BB and
the RRU.
3
Select the RP3 line rate option from the choices:
768 Mbps
,
1536 Mbps
,
3072 Mbps
, and