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Real-Time I/Q Baseband Generator User’s and Programming Guide
3-17
ESG Family Signal Generators
Softkey Reference
Options UN8 and 202
Numerics
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
QAM
>
64QAM
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
QAM
>
64QAM
256QAM
This softkey appears in two different situations, enabling you to either
select a modulation, or load a default I/Q map into the I/Q table editor.
Selecting a 256QAM Modulation
Press this softkey to select 256QAM (256-state quadrature amplitude
modulation) to modulate a continuous stream of the selected data
pattern. 256QAM modulation transmits data at the rate of 8 bits per
symbol. The selected modulation appears in the
Mod Type
field in the
text area of the display, and under the
Select
and
QAM
softkeys in the
Modulation Type menu.
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Select
>
QAM
>
256QAM
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Select
>
QAM
>
256QAM
Loading a 256QAM I/Q Map into the I/Q Table Editor
Press this softkey to load a 256QAM (256-state quadrature amplitude
modulation) I/Q map into the I/Q table editor. For details on editing I/Q
maps, see “
Mapping Symbol Positions with the I/Q Table Editor
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
QAM
>
256QAM
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
QAM
>
256QAM
800 MHz Base
Pressing this softkey selects 800 MHz Base as the frequency band for
PDC. The 800 MHz Base contains channels 1 through 320.
Softkey Location:
Mode
>
TDMA
>
PDC
>
Freq Channels
>
Channel Band
>
800 MHz Base
Summary of Contents for ESG series
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