Deviser DS2831 - Page 176

Part IV: System Functions
176
Analog TV Measurements
Frequency Range 7 ~ 1220 MHz
Standards B/G, I, D/K, L/L’, M/N
Color Standards NTSC, PAL, SECAM
Frequency Steps 10kHz
Level Measurement Range -40 ~ +60dBmV
Accuracy <±1.0dB @ 25±5°C (S/N>30dB)
Level Resolution 0.1dB
Resolution Bandwidth 300kHz
C/N
(>53dB, 0dB
attenuation)
Optim. input
(preamp on/off)
32 ~ 37dBmV
12 ~ 17dBmV
Max input
(preamp on/off)
60dB ±1.0dB
65dB ±3.0dB
CTB/CSO
(>53dB, 0dB
attenuation)
Optim. input
(preamp on/off)
22~67dBmV
2~7dBmV
Max input
(preamp on/off)
63dB @ ±1.5dB acc., 78 channels
70dB @ ±4.0dB acc., 78 channels
HUM Measurement 1~15%; ±0.5% (1~5%); ±1.0% (5~15%)
Depth of Modulation Range 40~95%, ±1.5% (C/N>40dB)
Tilt Up to 16 channels
Pre-Amplifier Automatic, 18dB gain
Attenuator Automatic, 40dB
Digital TV Measurement
Frequency Range 7 ~ 1220 MHz
Power Level Range -30 ~ +50dBmV
Accuracy <±1.5dB @ 25±5°C (C/N>20dB)
Level Resolution 0.1dB
Pre-Amplifier Automatic, 18dB gain
Attenuator Automatic, 40dB
Modulation Type
16, 32, 64, 128, 256 QAM
(J.83 Annex A and C);
64, 256 QAM (J.83 Annex B)
Interleave Depth
128 x 1 ~ 128 x 4 (J.83B);
12 x 17 (J.83A/C)
Symbol Rate 1.0 ~ 7.0 MS/s
SNR >47dB; Accuracy ±2.0dB
MER >47dB; Accuracy ±2.0dB
EVM >0.36%
BER 1E-3 ~ 1E-9
Constellation 16, 32, 64, 128, 256 QAM
Cable Modem Measurements (Downstream)
Supported Standards DOCSIS 3.0; 3.1
Frequency Range 108~1218 MHz; 258~1218 MHz
Demodulation
DOCSIS 3.0 64 QAM, 256 QAM
DOCSIS 3.1 OFDM 16~4096 QAM
Maximum
Speed
DOCSIS 3.0 1.2 Gbps (32 DS channel bonding)
DOCSIS 3.1 1.97 Gbps (2 OFDM 192 MHz chan.)
Channel
Bonding
DOCSIS 3.0 Up to 32 SCQAM
DOCSIS 3.1 2 OFDM, 192 MHz + 32 SCQAM
Bandwidth
DOCSIS 3.0 6 MHz / 8 MHz
DOCSIS 3.1 OFDM 192 MHz, SCQAM 6/8 MHz
Input Signal Level -15 ~ +15dBmV
Cable Modem Measurements (Upstream)
Frequency Range 5~85 MHz; 5~204 MHz
Signal
Bandwidth
TDMA 200/400/800/1600/3200/6400kHz
S-CDMA 1600/3200/6400kHz
OFDMA 96 MHz (3.1, BPSK~4096QAM)
Output
Signal Level
TDMA
+8 ~ +54 dBmV (32, 64QAM);
+8 ~ +55 dBmV (8, 16QAM)
+8 ~ +58 dBmV (QPSK)
S-CDMA +8 ~ +53 dBmV (all modulations)
OFDMA +11 ~ +65 dBmV
Channel
Bonding
DOCSIS 3.0 Up to 8 channels
DOCSIS 3.1 Up to 2 OFDMA channels
Maximum
Speed
DOCSIS 3.0 320 Mbps (8-channel bonding)
DOCSIS 3.1 720 Mbps (1 OFDMA 96 MHz chan)
Advanced Upstream Signal Generator (Option)
Signal
Modulation
J.83 Annex A CW, QPSK, 16/64/256QAM
J.83 Annex B CW, 64/256 QAM
FEC
J.83 Annex A RS (204,188)
J.83 Annex B RS (128,122)
Symbol Rate 1.0~7.0 MS/s
MER >40dB; accuracy ±2.0dB
BER <1E-9
Frequency Range 5~120 MHz
Frequency Step 10kHz
Phase Noise (CW @ 50 MHz) 100dBc@10kHz; 115dBc@100kHz
Frequency Accuracy 2ppm
Settling Time 2ms
Signal Level Range 0~60dBmV
Level Accuracy ±1.5dB (CW); ±2.0dB (QAM)
Level Adjustable Step 0.1dB