Real-Time I/Q Baseband Generator User’s and Programming Guide
3-83
ESG Family Signal Generators
Softkey Reference
Options UN8 and 202
D
E-TCH/F43.2
This key selects an enhanced circuit switched full rate traffic channel
for 43.2 kbits/s user data per GSM 05.03. The length of the RLC data
block for this channel is 640 bits.
Softkey Location:
Mode
>
TDMA
>
EDGE (Rev 8.3.0 Release 1999)
>
Data Format Pattern Framed
>
Configure Timeslots
>
Configure Normal
>
E
>
Multiframe Channel
>
E-TCH/F43.2
EDGE
This softkey appears in two different locations, as filter and modulation
selections.
Selecting the EDGE Filter Press the
EDGE
softkey in the Select
(filter) menu to select the EDGE pre-modulation filter (linearized
Gaussian). The EDGE filter is the default selection as specified by the
EDGE format.
Softkey Location:
Mode
>
TDMA
>
EDGE (Rev 8.3.0 Release 1999)
>
Modify Standard
>
Filter
>
Select
>
EDGE
Selecting EDGE Modulation Press the
EDGE
softkey in the Select
(modulation type) menu to enable EDGE modulation (3
π
/8 rotating
8PSK). EDGE modulation transmits data at the rate of 3 bits per
symbol. EDGE modulation is the default selection as specified by the
EDGE format.
Softkey Location:
Mode
>
TDMA
>
EDGE (Rev 8.3.0 Release 1999)
>
Modify Standard
>
Modulation Type
>
Select
>
PSK
>
EDGE
EDGE (Rev 8.3.0 Release 1999)
Press the
EDGE (Rev 8.3.0 Release 1999)
softkey in the TDMA menu to
access the softkey menus for utilizing the EDGE format. Accessing
lower level menus to this softkey will provide capabilities for
customizing the modulation, filter, burst shape, and other attributes of
the protocol.
Softkey Location:
Mode
>
TDMA
>
EDGE (Rev 8.3.0 Release 1999)
EDGE Off On
Press this softkey to enable the EDGE communications format. Setting
EDGE Off On
to
On
sets up the internal hardware to generate a signal
that follows the EDGE format. The internal I/Q modulator generates
3
π
/8 rotating 8PSK digital modulation and the
EDGE
and
I/Q
annunciators are turned on in the display. Although the digital
modulation is enabled with this softkey, the RF carrier is modulated by
the enabled modulation only when you have also set
Mod On/Off
to
On
.
Setting
EDGE Off On
to
On
presets the following softkeys in the I/Q
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