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Real-Time I/Q Baseband Generator User’s and Programming Guide
3-139
ESG Family Signal Generators
Softkey Reference
Options UN8 and 202
Q
QPSK
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
(see
“Loading a QPSK I/Q Map into the I/Q Table Editor,”
page).
Selecting a QPSK Modulation
Press this softkey to select QPSK (quadrature phase shift keying) to
modulate a continuous stream of the selected data pattern. QPSK
modulation transmits data at the rate of 2 bits per symbol. The
modulation selection appears in the
Mod Type
field in the text area of
the display, and under the
Select
,
QPSK and OQPSK
, and
PSK
softkeys in
the Modulation Type menus.
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Select
>
PSK
>
QPSK and OQPSK
>
QPSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Select
>
PSK
>
QPSK and OQPSK
>
QPSK
Loading a QPSK I/Q Map into the I/Q Table Editor
Press this softkey to load a QPSK (quadrature phase shift keying) 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
>
PSK
>
QPSK and OQPSK
>
QPSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
PSK
>
QPSK
and OQPSK
>
QPSK
Содержание ESG series
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