5
936.2332
/E
/0905
/5
.1
6
e
Main menu
Submenu output frequency
5. Selecting the output level
Set the output level in 1 dB steps between 0 and –10 dB with the “
+
” or “
–
” key as follows :
„from
y
y
–10... –2
y
y
–1
y
y
0
z
z
out
z
z
–10
z
z
–9...“
The setting of the output level is possible in the submenu for the output frequency. To do this, access the submenu with the
key and set the desired level with the “
+
” or “
–
” key.
Exit the submenu by pressing the key.
Input
1568
MHz
*
27,500
MS/s
3/4
TP
Output
S21
306,00 MHz
6,875
MS/s
64
QAM
***
UFO 386/TP
***
Output
Freq.
306,00 MHz
Output
Level
- 4
dB
< Return:
Submenu >
6. Selecting QAM Stages
Select the desired QAM with the “
+
” or “
–
” key. The selectable stages are 16, 32, 64, 128, 256.
... the value must be elevated (e.g. to 32).
... the value must be diminished (e.g to 128).
If the following message appears instead
of the output symbol rate...
If the following message appears instead
of the output symbol rate...
Input
1568
MHz
27,500
MS/s
3/4
TP
Output
S21
306,00 MHz
6,875
MS/s
64
QAM
Input
1568
MHz
*
27,500
MS/s
3/4
TP
Output
S21
306,00 MHz
too high
16
QAM
Input
1568
MHz
*
27,500
MS/s
3/4
TP
Output
S21
306,00 MHz
Too low
256
QAM
Note :
If several QAM stages are possible, it is advantageous to select the lower stage
(e.g. 64 or 32
z
z
32).
In operation mode “Stuffing”, “too high” or “too low” is not displayed; instead of this, an
exclamation mark indicates that either the output symbol rate or the QAM stage must be changed
in order to attain correct operation ( see selection of the output symbol rate in operation mode
“PRBS” and “Stuffing” with and without programme filter).