Chapter 16
Performing RFoCPRI Testing
JD700B Series User’s Guide
621
Setting measure setup
Procedure
1
Press the
MEASURE SETUP
hot key.
2
To set the CPRI line bit rate of the fronthaul under test, complete the following steps:
Press the
Link Rate
soft key.
Select the CPRI link rate option from:
614.4 Mbps
,
1228.8 Mbps
,
2457.6 Mbps
,
3072.0 Mbps
,
4915.2 Mbps
,
6144.0 Mbps
, or
9830.4 Mbps
.
NOTE
It is important that you set the link rate correctly to avoid any misleading LOS and LOF
alarms displayed on the screen.
3
Press the
Tx Clock
soft key, and then select
Recovered
(default).
4
Toggle the
Port Type
soft key to
Slave
(default).
5
To turn on the through mode if you have not used a tap, go to
More (1/2) > Thru
, and then toggle
the
Thru
soft key to
On
. To turn off, toggle to
Off
.
6
To configure Rx parameters, see “Configuring Rx Parameters” on page 621.
7
Optional
. To use the RF signal generator function, see “Using RF source in RFoCPRI testing” on
8
Optional
. To use the CPRI signal generator function, see “Using CPRI source” on page 642.
Configuring Rx Parameters
Procedure
1
Press the
MEASURE SETUP
hot key.
2
Press the
Rx Parameters
soft key.
3
To set the antenna per carrier group, complete the following steps:
Press the
AxC Group
soft key.
Enter a value by using the numeric keys or the rotary knob.
Press the
Enter
soft key.
NOTE
Maximum number of the AxC Group is determined by the factors of link rate, sample
width, oversampling, and signal bandwidth.
4
To set the I and Q sample widths, complete the following steps:
Press the
IQ Sample Width
soft key
Enter a value between 4 and 20 by using the rotary knob or the numeric keys, and then
press the
Enter
soft key.
NOTE
According to the CPRI specification, the IQ sample width shall be between 4 and 20 bits
for I and Q in the uplink and between 8 and 20 bits in the downlink.
5
To set the first bit position of each AxC Container in the IQ data block of a basic frame, complete
the following steps:
Press the
Map Position
soft key.
Select the AxC Container number you want to set from the choices:
AxC 0
,
AxC 1
,
AxC 2
,
AxC 3
,
AxC 4
,
AxC 5
,
AxC 6
, or
AxC 7
. Not all of these are activated depending on your
bandwidth setting.
Enter a value by using the numeric keys or the rotary knob.
Press the
Enter
soft key.
NOTE
The Antenna-Carrier (AxC) is the amount of digital baseband (IQ) U-plane data
necessary for either reception or transmission of one carrier at one independent antenna
element. The number of required AxC Container for a basic frame are two AxCs for 5
MHz, four AxCs for 10 MHz, and eight AxCs for 20 MHz.
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
Страница 105: ...Chapter 4 Using Spectrum Analyzer 104 JD700B Series User s Guide Figure 44 PIM detection for multiple carriers ...
Страница 406: ...Chapter 11 Using EV DO Signal Analyzer JD700B Series User s Guide 405 3 Pilot 4 MAC 64 5 MAC 128 ...
Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
Страница 763: ...Chapter 21 Performing Fiber Inspection 762 JD700B Series User s Guide Figure 461 Fiber inspection report ...
Страница 808: ...Appendix JD700B Series User s Guide 807 JD740B series ...
Страница 811: ...Appendix 810 JD700B Series User s Guide Figure 470 Append keywords window ...