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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:
–
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
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. To set the delay, complete the following steps:
a
Press the Delay soft key to set the amount of delay in µs.
b
Enter a value by using the numeric keys. You can also use the rotary knob.
c
Press the µs soft key.
NOTE
The Delay setting is used only when there is a time offset in the signals to be measured.
4
To set the start/stop symbols, complete the following steps:
a
Press the Start Symbol soft key.
b
Enter a value by using the numeric keys, and then press the Enter soft key.
c
Press the Stop Symbol soft key.
d
Enter a value by using the numeric keys, and then press the Enter soft key.
JD700B Series User's Guide
Chapter 13 Using Mobile WiMAX Signal Analyzer
421
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