Agilent Technologies ESG series, User And Programming Manual, Page: 100 / 446

3-30 Real-Time I/Q Baseband Generator User’s and Programming Guide
Softkey Reference ESG Family Signal Generators
C Options UN8 and 202
•
E:
shows the data selection (encryption bits) for this timeslot (PN9).
The
E
softkey makes this value the active function. Other selections
allowed include PN15, fixed 4-bit patterns, fixed patterns of ones and
zeroes, user files, or external data.
•
T:
shows that the 3-bit tail field contains hexadecimal zero. The
gray text in this field indicates that you cannot change the value.
EG:
is the extended guard time, displayed as a 68.25-bit field. This
is implemented as: 69 bit guard time field in timeslots 0 and 4, and
68 bit fields in the remaining timeslots (this implementation is
documented in the GSM format GSM REC. 05.10 Section 5.7:
“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 in this field indicates that you cannot change its value.
Softkey Location:
Mode
>
TDMA
>
GSM
>
Data Format Pattern Framed
>
Configure Timeslots
>
Timeslot Type
>
Access
>
Configure Access
Configure Custom
Pressing this softkey displays a menu of softkeys where you can select
the data pattern for a custom timeslot in the DECT, EDGE, GSM, and
PHS formats. The following figure shows an example of the display
graphics for a radio fixed part custom timeslot for the DECT format.
The PHS custom timeslot includes a fixed 4-bit ramp field.
•
G:
there are two guard time fields. These fields have grey text,
indicating that you cannot change their content.
•
Data:
shows the data selection (PN9) for this timeslot. Other
selections include PN15, fixed 4-bit patterns, fixed patterns of ones
and zeroes, format-specific patterns, user files, or external data.