Chapter 13
Using Mobile WiMAX Signal
Analyzer
480
JD700B Series User’s Guide
Setting limit for RF tests
By default, test limits specified in the standard are set for you. You can change thresholds if you desire.
Procedure
1
Press the
LIMIT
hot key.
2
Press the
RF Test Limits
soft key.
3
Select the test item(s) and set the limit(s) depending on your selected measurement mode:
To set the limit for
Select
Set
Channel power
Channel Power
High Limit, Low Limit
Occupied bandwidth
Occupied BW
High Limit
Spectrum emission mask
Spectrum Emission Mask
(On/Off only)
Spurious emissions
Spurious Emissions
(On/Off only)
4
Optional
. You can enable alarm sound that goes off if the measurement falls outside of the limit.
Toggle the
Beep
soft key between
On
and
Off
to enable or disable the beep sound.
5
Optional
. Go to
SAVE/LOAD > Save
, and then select
Limit
to save the limit settings.
See “Using save” on page 35 for more information.
Conducting power vs. time (frame) measurements
The Power vs. Time (Frame) measures the modulation envelope in the time domain, showing the power of
each time slot in a Mobile WiMAX signal.
Setting measure setup
After configuring test parameters as described in the “Configuring test parameters” on page 468, you can
continue your measurement. The measurement settings can be saved and recalled as a file.
Procedure
1
Press the
MEASURE SETUP
hot key.
2
Press the
System Config
soft key, and then do the following:
Press the
Bandwidth
soft key, and then select the nominal channel bandwidth to be
measured from the following choices:
7 MHz (8/7):
Sets the channel bandwidth to 7 MHz with sampling factor 8/7. In
conjunction with nominal channel bandwidth
8.75 MHz (8/7):
Sets the channel bandwidth to 8.75 MHz with sampling factor 8/7
10 MHz (28/25):
Sets the channel bandwidth to 10 MHz with sampling factor 28/25
Toggle the
Frame Length
soft key and select
5 ms
or
10 ms
.
Press the
TTG (RTG)
soft key to set the transmit/receive transition gap between the last
sample of the downlink burst and the first sample of the subsequent uplink burst.
Enter a value by using the numeric keys, and then press the
Enter
soft key.
Press the
CP Ratio
soft key, and then select the cyclic prefix ratio option:
1/4
,
1/8
,
1/16
, or
1/32
.
Press the
DL Symbols
soft key to set the number of downlink symbols.
Enter a value by using the numeric keys, and then press the
Enter
soft key.
Press the
UL Symbols
soft key to set the number of uplink symbols.
Enter a value by using the numeric keys, and then press the
Enter
soft key.
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
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Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
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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 ...