Chapter 16
Performing RFoCPRI Testing
632
JD700B Series User’s Guide
Press the
Subframe No
soft key.
Enter a value by using the numeric keys or the rotary knob.
NOTE
For MBMS testing, this subframe number must be neither 0 nor 5 as these subframes 0
and 5 are not available for MBMS and it must be set to the MBMS transmitted channel’s
subframe number.
Press the
Enter
soft key.
6
Toggle the
Physical Cell ID
soft key between
Auto
and
Manual
:
Auto:
Detects the Physical Cell ID for the LTE signal automatically.
Manual:
Sets a specific Physical Cell ID for the LTE signal manually in order to speed up
the synchronization.
7
Toggle the
EVM Detection Mode
soft key between
Single
and
Combine
:
Single:
Testing on one single antenna connected to your JD700B series with a cable.
Combine:
Testing on multiple antennas connected to your JD700B series with a 2x1
combiner or an antenna.
8
Depending on your selected NEM, you may need to turn on or off the inversion of the I and Q
order by toggling the
IQ Swap
soft key between
On and
Off
.
9
Optional
. Press the
Miscellaneous
soft key, and then set other miscellaneous setups as
described in the following section.
10
Check your measurement result displayed on the screen.
11
To clear current (C) and history (H) status of CPRI alarm on LOS and LOF and start a new
monitoring, press the
MEASURE SETUP
hot key and then the
Clear History
soft key.
12
Optional
. Go to
SAVE/LOAD > Save
, and then select the save option from the choices available
for your measurement mode. See “Using save” on page 35 for more information.
Setting other miscellaneous setups
Procedure
1
To assign a antenna port number automatically or manually, press the
Antenna Port
soft key
and select the option from:
Auto
,
0
, or
1
.
2
To select the cyclic prefix, toggle the
Cyclic Prefix
soft key to
Normal
or
Extended
. See
“Appendix E – Cyclic prefix table” on page 784 for OFDM parameter details by different
bandwidth.
3
To turn on or off the Multimedia Broadcast Multicast Service (MBMS) feature, toggle the
MBMS
soft key to
On
or
Off
. For proper MBMS testing, you need to set the
Subframe No
with the same
PMCH subframe number. If this setting is on, either PMCH or PDSCH appears on the screen
depending on the detected channel.
4
To set the Multicast Broadcast Single Frequency Network (MBSFN) detection automatically or
manually for MBMS testing, toggle the
MBSFN
soft key to
Auto
or
Manual
. An automatically
detected or manually entered MBSFN ID appears on the screen.
5
To set the threshold for PDCCH, complete the following steps:
Press the
PDCCH Threshold
soft key.
Enter a value by using the numeric keys.
Press the
Enter
soft key.
6
Toggle the
PDCCH Mode
soft key between
REG
and
Avg
.
REG:
Calculates EVM based on Resource Element Group
Avg:
Calculates EVM after adding all the PDCCH signals from one subframe.
7
To set the Control Format Indicator, toggle the
CFI
soft key between
Auto
and
Manual
:
Auto:
Makes the instrument set the number of OFDM symbols used for transmitting
PDCCHs in a subframe.
Manual:
Sets the number of OFDM symbols manually.
8
To select the number of PHICH groups (Ng), press the
PHICH Ng
soft key and then select the
option from:
1/6
,
1/2
,
1, 2
,
E-1/6
,
E-1/2
,
E-1
,
or
E-2
.
