DRAKE MQM861 Instruction Manual - Page 4
Browse online or download pdf Instruction Manual for Modulator DRAKE MQM861. DRAKE MQM861 15 pages. Digital to qam transcoder; multiplexing qam modulator
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Table of Contents / Specifications
TABLE OF CONTENTS
2
3
4
Table of Contents / Specifications
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6
SPECIFICATIONS
Channel Plans (Menu selectable):
Maximum Input Power (sum of all channels):
DEMODULATOR (S)
DQT1000 ONLY:
Input Frequency Range:
Input Channel Bandwidth:
Input RF Level Range:
Minimum Input Level per Mode:
Input Impedance:
Image rejection:
Adjacent Channel Rejection:
Noise Figure:
Demodulation Modes:
Symbol Rates:
Equalizer Span:
ASI INPUTS
MQM1000-Two Inputs
DQT1000 ASI Option:
NULL PACKET PROCESSING:
QAM MODULATOR
Modulation Modes:
Symbol Rate:
FEC:
I/Q Phase Error:
Carrier Suppression:
Channel Amplitude Error:
MER:
ANALOG EAS IF INPUT
Operating Input Level:
Auto Switching Level:
UPCONVERTER RF OUTPUT
Output Frequency Range:
Channel Plan:
FCC offsets:
Frequency Stability:
Maximum Output Level:
Minimum Output Level:
Output Level Accuracy:
Output Impedance:
Spurious Outputs:
Broadband Noise:
Phase Noise:
RS232 CONTROL
Data Link:
RS232 Input:
RS232 Output:
GENERAL
Power:
Weight:
Size:
Operating Temperature:
7
Rear Panel Controls and Connections
8
12 Operation / Additional Features
14 Warranty
Not present - MQM1000
54 to 864 MHz.
Std. CATV, HRC, IRC, or Broadcast
6 MHz.
-28 dBmV to +30 dBmV
8VSB: -28dBmV, 16VSB: -25dBmV,
64QAM: -20dBmV, 256QAM: -15 dBmV.
Not to exceed -16 dBm.
75 Ohms with Return Loss typically 8 dB.
40 dB.
60 dB
Less than 12 dB.
8VSB,16VSB - ATSC
16QAM, 32QAM, 64QAM, 128QAM, or 256QAM - ITUA
64QAM, 256QAM, - ITUB
Commonly used presets and user programmable.
-6 µS to +40 µS.
270 Mbps with desired transport stream of
10.76 MS/s, ATSC, 19.37 Mbps
DQT1000 and MQM1000 (fixed output clock mode)
16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 512QAM or
1024QAM. (See page 9 for all available combinations of QAM
modes and FEC.)
1 Ms/s to 7 Ms/s.
ITUA (DVB) or ITUB (DigiCipher II).
Less than 1 degree.
45 dB.
Less than 1 dB.
Greater than 38 dB with blind equalizer.
+30 dBmV ±5 dB at 45.75 MHz, 75 Ohms
+ 20 dBmV minimum.
54 MHz to 1002 MHz.
Std. CATV, HRC, IRC, or Broadcast
Automatic, +12.5 or +25 kHz
± 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
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 addtional transcoders.
90 - 132 VAC/ 60 Hz, 40 W maximum.
7 pounds
19" W x 1.75" H x 11.5" D.
0 degrees C to + 50 degrees C
Specifications subject to change without notice or obligation.