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JD700B Series User’s Guide
Figure 440 Example of RET calibration in Alcatel-Lucent RET information
Verifying link status
It is used to monitor link maintenance alarms of the physical layer (Layer 1) that is delivered on the L1 in-
band protocol, which resides on the layer 2 of CPRI. It also monitors the received optical power level.
Setting measure setup
You need to set the measure setup before staring the measurement.
Procedure
1
Press the
MEASURE SETUP
hot key
2
Toggle the
Select Port
soft key to
Port 1
or
Port 2
.
3
Activate the transmission by toggling the
Laser
soft key to
On
.
4
To set the CPRI line bit rate of the fronthaul under test, complete the following steps:
5
Press the
Link Rate
soft key.
6
Select the CPRI link rate option from:
Auto
,
614.4
Mbps
,
1228.8
Mbps
,
2457.6 Mbps
,
3072.0
,
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.
7
Toggle the
Port Type
soft key and select
Master
.
8
Press the
Tx Clock
soft key, and then select
Internal
for transmission clock reference.
9
Optional
. To use the RF signal generator function, see “Using RF source in RFoCPRI testing” on
10
Optional
. To use the CPRI signal generator function, see “Using CPRI source” on page 642.
11
To clear the previous event history and start a new testing, go to
More (1/2) > Clear History
and
then press the
Clear History
soft key.
