
Routine Operation
3-82
SCM4000
Operator’s Guide/Tech Ref Manual
Figure 3-214: Demodulator Menu - Typical
14.
Press the Up or Down arrow keys, as required, to
move the cursor to the
SNR:
option and observe the
cursor changes to a
*
cursor.
Note
Pressing the
SEL
key when the
*
cursor is
displayed will lock the display to allow you to
monitor SNR changes as they occur. To unlock the
display, press the
ESC
key.
15.
Observe the current signal to noise ratio is displayed.
16.
Press the
ESC
key repeatedly until the Main Screen is
displayed.
The procedure required to monitor Error Vector Magnitude
(EVM) is contained in the following steps.
1.
Verify the SCM4000 is powered up.
2.
Verify the Main Screen is displayed.
If the Main Screen is not displayed, press the
ESC
key
repeatedly until the Main Screen is displayed.
Figure 3-215: Main Screen Menu - Typical
Demodulator
> SR: 10.0MS/s
Mod Type: 16QAM
SNR: 30.3dB
SCM4000
>> Demodulator
System Menu
3.
Press the Down arrow key, as required, to move the
>>
cursor to the
System Menu
option.
4.
Press the
SEL
key or Right arrow key and observe the
System Menu
.
Figure 3-216: System Menu - Typical
5.
Press the Up or Down arrow keys, as required, to
move the
>>
cursor to the
Preset Menu
option.
6.
Press the
SEL
or Right arrow key to select the
Preset
Menu
option.
Note
“
X
” indicated in the
Preset Menu
in the following
steps represents Presets
1
thru
9
. “
Preset #X
”
represents the Preset name.
7.
Observe the
Preset Menu
is displayed.
.
Figure 3-217: Preset Menu - Typical
System Menu
>> Preset Menu
Active Errors
Error Log
Preset Menu
* #X: Preset #X
Save Settings
Recall Preset
Summary of Contents for SCM4000
Page 2: ......
Page 14: ...Introduction 1 4 SCM4000 Operator s Guide This page intentionally left blank ...
Page 234: ...Repair 6 2 SCM4000 Technical Reference Manual This page intentionally left blank ...
Page 242: ...Theory of Operation 8 6 SCM4000 Technical Reference Manual This page intentionally left blank ...
Page 250: ...Glossary A 8 SCM4000 Operator s Guide Tech Ref Manual This page intentionally left blank ...
Page 274: ...Index 8 SCM4000 Technical Reference Manual This page intentionally left blank ...