3-2
Real-Time I/Q Baseband Generator User’s and Programming Guide
Softkey Reference
ESG Family Signal Generators
Symbols
Options UN8 and 202
Symbols
%
Press this softkey to indicate acceptance of the edited I/Q Scaling value
(1.0 to 9999.0%).
Softkey Location:
Mode
>
Custom
>
Configure Hardware
>
I/Q Scaling
>
%
(this softkey appears after you edit the I/Q Scaling value)
π
/4
DQPSK
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 Modulation
Press this softkey to select
π
/4 DQPSK (
π
/4 Differential Quadrature
Phase Shift Keying) for modulating a continuous stream of the selected
data pattern.
π
/4DQPSK modulation transmits data at the rate of 2 bits
per symbol. Notice that the modulation selection is shown in the text
area of the display in the
Mod Type
field and also under the
Select
and
PSK
softkeys in the Modulation Type menus.
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Select
>
PSK
>
π
/4 DQPSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Select
>
PSK
>
π
/4 DQPSK
Loading an I/Q Map
Press this softkey to load a
π
/4 DQPSK (
π
/4 Differential 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
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
PSK
>
π
/4 DQPSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
PSK
>
π
/4 DQPSK
Содержание ESG series
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