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Setting measure setup
After configuring test parameters as described in the "Configuring test parameters" on page 456, you
can continue your measurement.
Procedure
1.
Press the MEASURE SETUP hot key.
2.
Press the System Config soft key, and then do the following:
a.
Press the Bandwidth soft key, and then select the nominal channel bandwidth to be
measured from the following choices:
–
–
–
b.
Toggle the Frame Length soft key and select 5 ms or 10 ms.
c.
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.
d.
Enter a value by using the numeric keys, and then press the Enter soft key.
e.
Press the CP Ratio soft key, and then select the cyclic prefix ratio option: 1/4, 1/8, 1/16, or
1/32.
f.
Press the DL Symbols soft key to set the number of downlink symbols.
g.
Enter a value by using the numeric keys, and then press the Enter soft key.
h.
Press the UL Symbols soft key to set the number of uplink symbols.
i.
Enter a value by using the numeric keys, and then press the Enter soft key.
3.
Optional. Press the Miscellaneous soft key, and then do the following as needed:
–
To set the delay, complete the following steps:
a.
b.
c.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
4.
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 31 for more information.
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
Press the Delay soft key to set the amount of delay in µs.
Enter a value by using the numeric keys. You can also use the rotary knob.
Press the µs soft key.
Using Mobile WiMAX Signal Analyzer
JD780A Series Analyzers
483
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