DRAKE MEQ1000A Kullanım Kılavuzu - Sayfa 5
Modülatör DRAKE MEQ1000A için çevrimiçi göz atın veya pdf Kullanım Kılavuzu indirin. DRAKE MEQ1000A 20 sayfaları. Multiplexing hybrid qam
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TABLE OF CONTENTS
2
3
5
6
7
8
Rear Panel Controls and Connections
9
SPECIFICATIONS
MEQ1000A
Modulation Modes:
Symbol Rate:
FEC:
I/Q Phase Error:
Carrier Suppression:
Channel Amplitude Error:
MER:
MEQ1000A
Output Frequency Range:
Channel Plan:
Frequency Stability:
Maximum Output Level:
Minimum Output Level:
Output Level Accuracy:
Output Impedance:
Spurious Outputs:
Broadband Noise:
Phase Noise:
MEQ1000A
Data Link:
RS232 Input:
RS232 Output:
MEQ1000A
MEQ1000A
Power:
Weight:
Size:
Operating Temperature:
Table of Contents /
12 Setup and Programing (Continued) / Operation
QAM Modulator
16QAM, 32QAM, 64QAM, 128QAM,
256QAM, 512QAM, or 1024QAM.
1 Ms/s to 7 Ms/s.
ITUA (DVB) or ITUB (Digitcipher).
Less than 1 degree.
45 dB.
Less than 1 dB.
Greater than 38 dB with blind equalizer.
Upconverter RF Output
54 MHz to 1002 MHz.
Standard CATV, HRC, IRC, or Broadcast.
± 5 ppm.
+ 61 dBmV minimum, adjustable
downward.
+ 45 dBmV.
± 1 dB.
75 Ohms with return loss better than
14 dB (within output filter passband).
-60 dBc from 40 MHz to 1000 MHz.
Less than -12 dBmV (6 MHz BW @
± 12 MHz).
-101 dBc @ 10 kHz offset.
RS232 Control
2400, 4800, 9600, or 19,200 baud
interface via serial cable.
DB-9 connector for connection to
modem or PC.
DB-9 connector for connection to
other transcoders.
ASI Output
The ASI output provides a copy of the
transport stream that is input to the QAM
modulator.
General
90 - 132 VAC/60 Hz, 35 W maximum.
9.5 pounds.
19" W x 1.75" H x 14.5" D.
0 degrees C to + 50 degrees C.
5