Chapter 16
Performing RFoCPRI Testing
642
JD700B Series User’s Guide
JD780B series
:
5 MHz
to
6 GHz
Select the unit option from:
GHz
,
MHz
,
kHz
, or
Hz.
NOTE
The frequency of the CW signal must be in the uplink band of the RRH under test.
5
To set the output level of the CW signal to be injected, complete following steps:
Press the
Power Level
soft key.
Enter a value within the output range for the frequency you have set in step
4
.
JD740B series
:
-80 dBm
to
-30 dBm, 0 dBm
JD780B series
:
-60 dBm
to
10 dBm
Press the unit soft key.
6
To start to inject the set signal, toggle the
RF Source
soft key to
On
.
7
To stop injecting the signal, toggle the
RF Source
soft key to
Off
.
Using CPRI source
You can use the CPRI Source feature to generate CW and various types of E-UTRA Test Model waveforms
in RFoCPRI testing for LTE-FDD and LTE-TDD:
CW
,
CW (Two Tone)
,
E-TM1.1
,
E-TM1.2
,
E-TM2
,
E-TM3.1
,
E-TM3.2
, and
E-TM3.3
. You can also select the Tx signals to inject and configure the TX parameters of the
selected signals.
Procedure
1
Make the Tx of a SFP/SFP+ module looped back to the Rx of the same module.
NOTE
When two SFP/SFP+ modules are installed in both Port 1 and Port 2, the CPRI source
always works via the Port 1, which is the primary port. If you want to use the Port 2 for
this CPRI signal generation, make sure to eject the module from the Port 1.
2
Press the
MEASURE SETUP
hot key.
3
To set the Tx Clock and Port Type settings correctly, complete the following steps:
Press the
Rx Parameters
soft key.
Press the
Tx Clock
soft key and then select
Internal
.
Toggle the
Port Type
soft key to
Master
.
Press the
PREV
hard key to return to the Measure Setup menu.
4
Press the
Source
soft key. Depending on your selection of measurement mode, you may need
to select
More (1/2) > Source
.
5
Press the
CPRI Source
soft key.
6
Select a desired Tx Parameters you want to inject from the menu bar:
Tx1 Parameters
,
Tx2 Parameters
,
Tx3 Parameters
, or
Tx4 Parameters
.
7
To select a Tx carrier, complete following steps:
Press the
Select Tx Carrier
soft key.
Select a desired Tx carrier number from the menu bar.
Up to 12 selections for carriers are available based upon configuration.
8
To select a Tx container, complete the following steps:
Press the
Select Tx Container
soft key.
Select a desired Tx container from the menu bar.
Total 4 containers are available.
9
To set the bandwidth of the downlink signal, complete the following steps:
Press the
Bandwidth
soft key.
Select the bandwidth option from:
1.4 MHz
,
3 MHz
,
5 MHz
,
10 MHz
,
15 MHz
, or
20 MHz
.
10
To select a waveform to be generated, complete the following steps:
Press the
Waveforms
soft key.
The Waveform list dialog box appears.
