Harmonic ProView 2900 - Page 94

Chapter 6: Receiver Configuration Modules Satellite Receiver Configuration
© Harmonic Inc. Manual p/n 101543/Ver 1.0 6-9 ProView 2900 Series/SW Version 1.94
6.2.1.11. Frequency Scan
The Frequency Scan configuration function sets scanning a selected frequency range if the
stream's frequency is unknown. The symbol rate must be known and set in the
ProView 2900. The ProView 2900 scans the frequency range, while seeking a valid DVB
stream. Upon locating a valid DVB stream, the ProView 2900 marks the located frequency
and service name. Results output either to the RS-232 port (terminal) or Telnet. The following
screen displays the Frequency Scan screen
NOTE
The ProView 2900 scans only the L-band frequency range. Located frequencies are shown in
L-Band and must be modified for the relevant frequency value if they are tuned to either C-
band or Ku-band.
The following figure illustrates the Frequency Scan screen.
Frequency Scan
Frequency Scan Frequency Scan
Frequency Scan
1
11
1

 OFF
OFF OFF
OFF
2
22
2

 BAND
BANDBAND
BAND
3
33
3

 +/
+/+/
+/-
--
-6 [MHz]
6 [MHz]6 [MHz]
6 [MHz]
The available options are:
• OFF – Frequency scan is disabled.
• BAND – Frequency scan is enabled. This mode allows scanning all bands.
• +/-6 [MHz] – Frequency scan is enabled. This mode allows scanning a selected
frequency range if the stream's frequency is unknown. This feature is especially useful for
low symbol rates signals (less then 10Msym/s). All reception parameters must be set,
including symbol rate and frequency. When operating the scanning, the ProView 2900
searches for a valid signal within a range of 12MHz (configured frequency ±6MHz). The
ProView 2900 locks on the first detected valid signal, and automatically sets the
configured frequency accordingly.