Comtech EF Data SDM-2020 - Manual (Page 122)

SDM-2020 Satellite Demodulator Revision 4
Front Panel Operation MN/SDM2020D.IOM
6–58
UTILITY
FACTORY SET-UP
CAUTION
This configuration is used for factory alignment and filter setup parameters.
To avoid demodulator failure, Factory Setup should not be changed by
unauthorized persons.
6.1.13 Initial Defaults
Initial default settings for the demodulator are listed in Table 6-4.
Table 6-4. Initial Defaults
Configuration Demodulator
Demodulation/Code Rate
(see Note 1)
QPSK 1/2 Energy Dispersal On
Data Rate
(see Note 1)
15.000000 Mbps RS Decoder Corr On
Symbol Rate
(see Note 1)
16.276596 Msps BER Threshold None
Demodulation/Code Rate
(see Note 2)
QPSK 3/4 E
b
/N
0
Threshold None
Data Rate
(see Note 2)
44.736000 Mbps E
b
/N
0
THRESH ALM Off
Symbol Rate
(see Note 2)
32.362213 Msps Sweep Range 100000 Hz
RX IF Frequency
(see Note 3)
1200 MHz Reacquisition 0 seconds
RX IF Frequency
(see Note 4)
70 MHz RF Input Select 1
LNB Power Off
Configuration Interface
RX Clock Phase
(see Note 1)
Normal EXT-REF Freq 1544 kHz
(see Note 2)
RX Data Phase Normal TX TERR CLK Freq 44736 kbps
(see Note 2)
RX Data Fault None TX Coding Format AMI
(see Note 2)
DVB Framing Type 188 Buffer Clock RX (Satellite)
(see Note 2)
RX 2047 Pattern Off RX Coding Format AMI
(see Note 2)
INTF Loopback
see Note 2)
Off Buffer Size 12 ms
(see Note 2)
Monitor
Raw BER 2.4 E-3 DEMOD Spectrum Normal
Corrected BER 4.0 E-3 LNB Current 0 mA
Eb/N0 16.0 dB 2047 Pattern No Data
Eb/N0 Margin 10.0 dBm Buffer Fill 50%
Receive Signal -45.0 dBm 2047 Errors No Data
Sweep Frequency +0 Hz
Utility Demodulator
Demodulator Type DVB
Table 6-4. Initial Defaults (Continued)