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Real-Time I/Q Baseband Generator User’s and Programming Guide
Softkey Reference
ESG Family Signal Generators
D
Options UN8 and 202
D
D8PSK
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 D8PSK Modulation
Press this softkey to select D8PSK (differential 8-state phase shift
keying) for modulating a continuous stream of the selected data
pattern. D8PSK modulation transmits data at the rate of 3 bits per
symbol. The modulation selection is shown in the
Mod Type
field in the
text area of the display, and also under the
Select
and
PSK
softkeys in
the Modulation Type menus.
Softkey Locations
Custom:
Mode
>
Custom
>
Modulation Type
>
Select
>
PSK
>
D8PSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Select
>
PSK
>
D8PSK
Loading a D8PSK I/Q Map into the I/Q Table Editor
Press this softkey to load a D8PSK (differential 8-state 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
>
D8PSK
Other Formats:
Mode
>
TDMA
>
desired format
>
Modify Standard
>
Modulation Type
>
Define User I/Q
>
Load Default I/Q Map
>
PSK
>
D8PSK
Data
For Unframed Data Transmission
Press this softkey to display a menu of choices for internal data
generation (pseudorandom bit patterns, fixed 4-bit repeating sequences,
set patterns of ones and zeroes, standard-specific patterns) for
unframed transmission. You can choose to supply your own data
(download a binary file or input data using the DATA INPUT
connector).
NOTE
Pattern Repeat and Pattern Trigger functions are not available if you
use either a PN data sequence, or an external data source.
Summary of Contents for ESG series
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Page 446: ...I 16 Index Index ...