pico digital

PQM

Agile QAM Modulator





    • Professional quality Agile QAM Modulator and Up-Converter
    • Modular design allows 6 or 8 modulators in 2 RU
    • Accepts DVB-ASI input
    • RF output channels 2~135 (54~860MHz)
    • Minimum 45 dBmV output level
    • ANNEX B and Annex A support
    • Supports fixed and auto clock mode
    • QAM Modes Supported: 64! 128, 256
    • Null packets stuffing and PCR corrections provided
    • Programmable by channel or frequency
    • Loss of transport input stream alarm
    • Built in CW Test mode
    • Used with MPC-12, MPC-12R, or MPC-16PS/CS (chassis and power supply)


QAM Modes
Annex A 16, 32, 64, 128 & 256
Annex B 64 & 256
QAM Modes
Symbol Rate 1 to 7 Mbaud
Input ASI
FEC Encoder ITU-T J.83 ANNEX B ( DigiCipher® II,
ITU-T J.83 ANNEX A (DVB)
Spectral Inversion Auto Recognition
Carrier Suppression >53 dB
MER 40 dB minimum
I/Q Phase Error <1°
I/Q Amplitude Imbalance <1%
QAM RF Output Specifications
Frequency Range 54 to 860 MHz
RF Output Channel 2-135
Output Level 45 dB minimum
Output Level Control Range 15dB
In-band QAM RF flatness ± 0.5dB
QAM RF Amplitude Flatness .9 dB maximum (54 to 860 MHz)
Output Impedance 75Ω
Phase Noise @ 10 KHz Offset -105 dBc/Hz
Frequency Stability ±5 Khz
Broadband Noise -75 dBc
Spurious Output -60 dB minimum (54 to 1000 MHz)
Group Delay <10 ns
Connectors F-type
ASI Input BNC 75Ω
RF Output F type, Female
Connectors
Power Headers 3 Pin, 5 VDC, 12 VDC, and Gnd
Power Requirement
Voltages 5, 12 VDC
Power Consumption per Module 6.5 Watts, and 6 modules,
39 Watts
Operating Temperature Range 0 to 50 °C
Mechanical
Dimensions 2" (W) x 10" (D) x 3.5" (H)
Weight 1.6 lbs.


Ordering Information
PQM Agile QAM Modulator



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