| COFDM Interface
Characteristics (Option CF) |
| Input Frequency Range |
50 MHz to 858 MHz in 166.7 or
62.5 kHz steps |
| Tuning Accuracy |
Better than ±50 ppm typical |
| Channel Bandwidth |
6 MHz,7 MHz and 8 MHz (SW
selectable) |
| Connector Style |
F Type with BNC adapter |
| Input Termination Impedance |
75 W nominal |
| Input Return Loss |
7 dB typical 50 MHz to 858 MHz |
| Rx Lock Status |
Indicated by LED on rear panel
and by the UI |
| Modulation Scheme Supported |
QPSK (4QAM),16QAM and 64QAM
modulation |
| Transmission Modes |
2K carriers and 8K carriers |
| Hierarchical Modes |
All hierarchies are be
supported,including no hierarchy,and alpha = 1,2 and 4 |
| Viturbi Puncture Rates |
1/2,2/3,3/4,5/6,7/8 |
| Guard Interval |
1/32,1/16,1/8,1/4 |
| Spectrum Polarity |
The receiver will operate with
both inverted and normal spectral polarity |
| Input Signal Amplitude Range |
QPSK (4QAM):–85 dBm to –10 dBm
(24 dBuV to 99 dBuV) typical |
| |
16QAM:–80 dBm to –10 dBm (29
dBuV to 99 dBuV) Typical |
| |
64QAM:–72 dBm to –15 dBm (37
dBuV to 94 dBuV) typical |
| RF Measurements |
|
| Carrier Offset |
Carrier offset is measured
from the tuned channel frequency to an accuracy |
| |
of ±10 ppm typical |
| Signal to Noise Ratio (SNR) |
Display Range: |
| |
6 dB to 40 dB for QPSK (4QAM): |
| |
11 dB to 40 dB for 16QAM |
| |
16 dB to 40 dB for 64QAM |
| |
Resolution:1 dB |
| |
Accuracy:±1 dB to 30 dB SNR
(measured at –30 dBm input in high-resolution |
| |
mode) typical |
| EVM (Error Vector Magnitude) |
Display Range: |
| |
1% to 30% rms,for QPSK |
| |
1% to 20% rms,16QAM |
| |
1% to 8.5% rms,64QAM |
| |
Resolution:0.1% |
| Modulation Error Ratio (MER)
with Equalizer |
Both MER Peak and MER Average
are displayed as measured across |
| |
all carriers |
| |
Display Range: |
| |
6 dB to 37 dB for QPSK (4QAM) |
| |
11 dB to 37 dB for 16QAM |
| |
16 dB to 37 dB for 64QAM |
| |
Resolution:0.1 dB |
| |
Accuracy:±1 dB to 30 dB
(measured at –30 dBm input in high- |
| |
resolution mode) typical |
| Constellation |
The RF constellation is
displayed on the UI |
| Bit Error Ratio (BER) |
Pre FEC,BER and Error Sec BER
values are displayed |
| Post Reed Solomon BER |
Post RS BER (Uncorrectable
Error Count) displayed |
| Transport Error Flag (TEF) |
Alarm generated on detection
of a TEF |
| 8VSB Interface
Characteristics (Option VS) |
| Input Frequency Range |
54 MHz to 860 MHz,VHF/UHF
channels 2 to 69 (to include low VHF frequencies) |
| Input Signal Level |
–72 dBm to –6 dBm (–23 dBmV to
+43 dBmV) typical |
| Modulation Format |
8VSB in accordance with ATSC
A/53B |
| Receiver Bandwidth |
6 MHz |
| Input Termination Impedance |
75 W nominal |
| Connector Type |
F Type Connector |
| Input Return Loss |
5 dB typical |
| RF Measurements |
|
| RF Lock |
RF lock is indicated by a LED
on the rear panel and a status indicator on the UI |
| Input Level |
Range: |
| |
–72 dBm to –2 dBm |
| |
–23 dBmV to +47 dBmV relative
to 75 W |
| |
Resolution:1 dB |
| |
Accuracy:±3 dB up to –6 dBm
input level typical |
| Error Vector Magnitude (EVM) |
Display Range:3% to 12.5% RMS |
| |
Resolution:0.1% typical |
| Equivalent Modulation Error
Ratio (MER) |
Display Range:17 dB to 31 dB |
| |
Resolution:1 dB |
| |
Accuracy: |
| |
±1 dB for MER <25 dB typical |
| |
±3 dB for MER 25 dB to 31 dB
typical |
| Signal to Noise Ratio (SNR) |
Display Range:15 dB to 35 dB |
| |
Resolution:1 dB |
| |
Accuracy: |
| |
±1 dB for SNR <25 dB typical |
| |
±3 dB for SNR 25 dB to 35 dB
typical |
| Bit Error Ratio (BER) |
Pre FEC,SER and Error Sec BER
values displayed on UI |
| Constellation |
The RF symbol distribution is
displayed in the UI |
| Echo Profile |
The Echo Profile is shown in
the UI |
| |
|
| |
|
| QPSK (L-Band)
Interface Characteristics (Option QP) |
| Input Frequency Range |
950 MHz to 2150 MHz step size
of 1 MHz |
| Input Signal Amplitude Range |
–60 dBm to –30 dBm for a CBER
of <1e–6 |
| Modulation Format |
QPSK in accordance with ETSI
EN 300 421 |
| Modulated Baud Rate |
1 MBaud min,45 MBaud max |
| Viterbi Values Supported |
1/2,2/3,3/4,5/6,6/7,7/8 |
| FEC |
In accordance with ETSI EN 300
421 |
| Connector Style |
F-style |
| Input Termination Impedance |
75 W nominal |
| Input Return Loss |
10 dB min,950 MHz to 2150 MHz
typical |
| Loopthrough Output Amplitude |
–6 dB to +3 dB typical |
| Loopthrough Output Reverse
Isolation |
30 dB typical |
| LNB Supply Voltage |
Selectable; 13.0V ±1.5V or
18.0V ±1.5V |
| LNB Supply Maximum Current |
200 mA maximum |
| LNB 22 kHz Signalling
Frequency |
17.6 kHz min,26.4 kHz max (22
kHz ±20%) |
| LNB 22 kHz Signalling
Amplitude |
600 mVpk-pk
nominal with 100 W load |
