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Operation
3.3.2
Monitor
Refer to Figure 3-8.
When the Monitor level is entered, press [←] or [→] to select the desired monitor
function. Each monitor function is displayed in real time as long as it is selected.
RAW_BER
CORRECTED BER
E b /N 0
E
/N
MARGIN
B
0
RECEIVE SIGNAL
SWEEP FREQUENCY
DEMOD SPECTRUM
LNB CURRENT
2047 PATTERN
BUFFER FILL
2047 ERRORS
3–20
Displays the current BER or No Data (if carrier is not locked).
Range: <m.m E-e to >m.m E-e.
Note: Low limit based on performance. High limit based on data/code rate.
Displays the current corrected BER estimated or No Data (if carrier is not
locked).
Range: <m.m E-e to >m.m E-e.
Note: Low limit based on performance. High limit is 1.0 E-12.
Displays the current E b /N 0 estimated or No Data (if carrier is not locked).
Range: <mm.m to >mm.m.
Note: Low limit based on data rate. High limit is 16.0 dB.
Displays the current E
/N
margin by calculating:
b
0
E
/N
Margin = [ E
/N
- E
/N
b
0
b
0
b
Displays the signal level (See Figure 1-3).
For 1-input connector: Current RX level: -35.0 to –70.0 dBm.
For 4-input connector: Current RX level: -9.26 to –63.2 dBm.
Displays the current sweep frequency.
Range: 0 to 1,000,000 Hz (-500,000 to +500,000 Hz).
Displays the current sense of the RX Demodulator Spectrum as NORMAL
or INVERT.
Displays the LNB current (in mA) as CURRENT or LNB POWER OFF.
Displays "LOCKED" upon detection of a valid 2047 pseudorandom data
pattern. Displays "NO DATA" when the demodulator cannot detect a valid
2047 pseudorandom data pattern. Displays:
"NOT ENABLED" if "RX 2047 PATTERN" is selected OFF in the
<CONFIGURATION><INTERFACE> menu.
Displays the current plesiochronous buffer fill status percent.
Range: 1 to 99%
Note: Available only with G.703 Interface installed.
Receives 2047 BER. This is a monitor point that displays the current
RX2047 BER. If no data is available, "NO DATA" is displayed.
Notes:
1.
SAMPLING is displayed when gathering data. This process can
take several minutes to calculate a BER based on a 2047 test
pattern.
2.
Available only with G.703 interface installed.
SDM-2020 Satellite Demodulator
Threshold]
0
Rev. 3
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