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Operation
Table 3-7. Demodulator Parameter Detail
Representation
Status
Carrier
Locked, OK
Status
Eb/No
4.7dB
Status
Offset
–8.031kHz
Status
Level
–52.4dBm
Status
Est. BER
2x10^–7
Status
SER
3.37x10^–2
Status
Buffer
100%
Status
Test
Normal
IF
Frequency
70.000000MHz
IF
Sweep Range
+/-30.000kHz
IF
Sweep Mode
Fast
»IF
Sweep Time
10.0 Sec
IF
Modulation
QPSK
IF
Spectrum
Normal
IF
Filter Mask
Normal
Page 3-20
Demodulator Parameter Detail
Type
Entry
Read Only
N/A
Read Only
Measured by internal
circuitry.
Numeric
Within +/– Narrow
Acquisition Range
Read Only
N/A
Read Only
Press "0" or "Edit" and
Resettable
"Enter" to restart.
Read Only
Press "0" or "Edit" and
Resettable
"Enter" to restart.
Read Only
0 = Reset Slip (Flag)
Resettable
1 = Re-center
Read Only
N/A
Numeric
50.000 000 to 90.000 000
MHz
950 000 000 to 1900 000
000 MHz for L-Band unit
Numeric
+/–0.1 to +1,250.000 kHz
Selection
0 = Fast, 1 = Search
0.0 to 600.0 Seconds.
Numeric
0 Disables Narrow Sweep
Selection
0 = BPSK, 1 = QPSK,
2 = OQPSK, 3 = 8PSK,
6 = 16QAM
Selection
0 = Normal, 1 = Inverted
Selection
0 = IESS, 1 = Legacy
PSM-500/500L/500LT SCPC Satellite Modem
Description
Demodulator receive Carrier
Status
Measured Eb/No
Receive carrier offset
frequency. An entry will reset
to 0 after search time has
elapsed.
Receive carrier level
Estimated Bit Error Rate
Measured Symbol Error Rate
FIFO Buffer status in percent
fill. Only visible when Demod
Data clock source is not set to
"RCV Clock". The "slip" flag
tells when the FIFO
automatically re-centered.
Demodulator Test Status
Carrier center frequency.
L-Band frequency shown if
LNB LO is set to 0, else is set
to RF frequency.
Carrier Acquisition Range in
kHz.
Fast Acquisition mode is
standard method
Narrow Sweep time
applicable to Search sweep
mode only.
Modulation Mode. Some
values left available for new
options.
Modulation Spectrum control
Modulation Spectrum Filter
Control. Legacy for PSM-4900
compatibility.
PSM-500/500L/500LT - Rev. 0.91
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