13
AMA 299
Part N
o
: 9859.8x
QAM Modulator
ASI-TS
→
DVB-C/ ITU-T J.83 Annex B, C
A
LINE
10. Technical data
ASI input
Level range
200 … 880 mV
pp
Connector
BNC socket
Impedance
75 Ω
ASI polarity
regular/ inverted
ASI output
Level
800 mV
pp
(± 10 %)
Connector
BNC socket
Impedance
75 Ω
ASI polarity
regular
ASI signal processing
Data rate
0.625…213 Mbps
ASI transfer format
Input/ output
continuous, burst/ burst
TS transfer format
Input/ output
188, 204 byte (respectively)
Signal processing
EN 50083-9 [1]
QAM modulator
Symbol rate
1.0 ... 7.2 MSps
QAM modulation
ITU-T J.83 Annex B, C, DVB-C
Annex B
Annex C
DVB-C
QAM constell.
64; 256
64
16; 32;64;
128; 256
Roll off
12 %, 18 %
13 %
15%
Interleaving
Conv. I=128, J=4 Conv. I=12
Conv. I=12
Forward error
Reed Solomon (128,122) Reed Solomon
Reed Solomon
correction (FEC)
+ Trellis
(204, 188,8)
(204, 188,8)
Test signals
according adjustment symbol rate
& QAM constellation
Measurement signal
unmod. carrier (signal level)
PSI-/ SI processing
disconnectable
Zero stuffing
continously
Signal processing
EN 300 429 [2] (DVB-C)
ITU-T J.83[4] (Annex B, C)
IF loop
*
Output/ input
internal jumpered or external avail-
able (switchable)
Output frequency
36.000 MHz
Input frequency
36.000, 36.125, 36.150, 38.900,
44.000, 45.750 MHz
Output/ input level
- 14 dBm (95 dBµV)
Connector
2x BNC socket, 75 Ω
IF decoupling
≥ 80 dB
RF output
Output frequency range
45 ... 862 MHz
Tuning step
10 kHz / 25 kHz
**
Max. output level
14 dBm (123 dBµV)
Level adjustment range
-10 ... +14 dBm
Channel allocation
adjacent channel ability
Connector
F socket, 75 Ω
Return loss
≥ 18 dB 45 MHz
- 1.5 dB/ octave
Test output
- 30 dB (± 1 dB)
Signal quality
MER
≥ 43 dB (14 dBm)
≥ 45 dB (11 dBm)
Shoulder attenuation
≥ 50 dB (14 dBm)
≥ 58 dB (11 dBm)
Spurious 45...862 MHz
≥ 60 dB (14 dBm)
≥ 63 dB (11 dBm)
C/N (> 25 MHz space from channel center)
BW = 6 MHz
typ. 79 dB
BW = 8 MHz
typ. 78 dB
Phase noise
1 kHz; typ. -92 dBc/ Hz
10 kHz; typ. -101 dBc/ Hz
100 kHz; typ. -108 dBc/ Hz
Max. frequency stability
± 30 kHz
Output level stability
± 0.5 dB (5 .. 45 °C)
Output level accuracy
± 1.5 dB
Amplitude frequency
response channel (8 MHz)
max. 1 dB
pp
Operation parameters
Voltage/ current
100 ... 240 V ~ 50/ 60 Hz
100 ... 353 V =
Power consumption
18 W
Enviromental conditions
Temperature range
-10 ... +55 °C
Temperature range
(for data keeping)
5 ... 45 °C
Relative humidity
≤ 80 % (non condensing)
Mounting location
splash-proof
and drip-proof
Miscellaneous
Dimensions (w x h x d)
448 x 44 x 350 mm
Weight
4,200 g
Delivery content
1x Power cord
1x RJ45 connection cable
1x Mounting kit
2x Fuse T 1A/ 250V
*
only in device variant 9859.82 available
**
25-kHz-step only with active IF loop and 36.125 MHz input frequency
9. Block diagram
Multiplexer
with
PCR-correct.
c
IF
RF
RF measurement
socket
R
