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Real-Time I/Q Baseband Generator User’s and Programming Guide
3-41
ESG Family Signal Generators
Softkey Reference
Options UN8 and 202
C
Configure Dummy
Pressing this softkey opens a menu of softkeys where you can configure
a dummy timeslot. The following figure shows an example of a dummy
timeslot.
•
T:
shows that both of the 3-bit tail fields always contain
hexadecimal zero. The grey text indicates that you cannot change
the contents of these fields.
•
M1:
shows the value (3EDD8293824407C) of the 58-bit mixed bit
field. The grey text indicates that you cannot change the value.
•
TS:
shows the value (hexadecimal 0970897) of the 26-bit training
sequence for this timeslot. The
TS
softkey makes this the active
function.
•
M2:
shows that the 58-bit mixed bit field always contains
1D28CCE7A7C4BEA. The grey text indicates that you cannot
change the content of this field.
•
G:
guard time appears in the visual representation of the timeslot
as an 8.25-bit field. In the implementation, the guard time field in
timeslots 0 and 4 is 9 bits long, and the remaining timeslots contain
8-bit fields. This implementation is documented in the GSM format
“GSM REC. 05.10 Section 5.7” as follows: “Optionally, the BS may
use a timeslot length of 157 bit periods on timeslots with TN=0 and
4, and 156 bit periods on timeslots with TN=1, 2, 3, 5, 6, 7, rather
than 156.25 bit periods on all timeslots.” The grey text indicates that
you cannot change the content of this field.
Softkey Location:
Mode
>
TDMA
>
GSM
>
Data Format Pattern Framed
>
Configure Timeslots
>
Timeslot Type
>
Dummy
>
Configure Dummy
Содержание ESG series
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