Harmonic Ellipse 3000, Руководство пользователя

Страница: 306 / 403

Chapter 11 DSNG Configuration
© 2013 Harmonic Inc. Harmonic All rights reserved. 306 Ellipse 3000 Release 3.0, Rev. B
L-Band Modulator Parameters
11.2.4 TX RF Frequency
The TX RF Freq (frequency) parameter creates the connection between the LO frequency and the
L-Band. This determines the actual rate sent from the upconverter module. The actual value is
calculated according to the RF Conv. LO Frequency value and the L-Band Frequency value.
Any changes to the TX RF Frequency parameter’s value affect the L-Band Frequency parameter’s
value, matching it to the calculated value. For example, when changing the TX RF Frequency from
14,950,000 to 15,000,000 the following value changes occur:
NOTE:
Changes to the TX RF Frequency value only affect the L-Band Frequency value. However, the RF Conv.
LO Frequency can be configured manually by the user.
Front Panel
To set the TX RF Frequency parameter on the front panel:
❖
Navigate
Root > L-Band Modulation and Up-Converter > TX RF Freq
.
The range is 0 to 100,000,000 kHz. The TX RF Frequency default value is 15,000,000 kHz .
Web Manager
To set the TX RF Frequency parameter in the Web Manager:
❖
Select
DSNG > Modulator and Up-Converter
(see Figure 11–2).
Parameter Former Value New Value Change happens:
TX RF Freq 14,950,000 15,000,000 Manual
RF Conv. LO Freq 14,000,000 14,000,000 Keeps value
L-Band Freq 950,000 1,000,000 Automatic
TX RF Frequency
+014950000 [kHz]
<000000000 - +100000000>