ASM 988A Specifications

8PSK Modulation Parameters

FEC rate

FEC 2/3

FEC 3/4-I

FEC 3/4-II

FEC 5/6

FEC 8/9

Bit rate in Mbits/s

0.52 to 57.1

0.55 to 62.8

0.5 to 61.2

0.59 to 68.5

0.61 to 71.4

Baud rate in Mbauds

0.256 to 30

0.256 to 30

0.256 to 30

0.256 to 30

0.256 to 30

Note: FEC 3/4-I represents 2.1 bits/symbols and FEC 3/4-II represents 2.05 bits/symbols

• Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution

• Symbol rate step 1 bps

• Spectral Inversion: on/off

 

DVB QPSK Modulation Parameters:

• FEC Code Rates: 1/2, 2/3, 3/4, 5/6, 7/8

• FEC Modes: As per ETSI EN 300 421 V1.1.2 DVB

• Symbol Rate: 256 KSps to 30 MSps

• Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution

• Spectral Inversion: on/off

 

Advanced QPSK Modulation Parameters:

• FEC Code Rates: 1/4, 1/2, 3/4

• FEC Modes: Turbo Code

• Symbol Rate 256 KSps to 30 MSps

• Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution

 

16 QAM Modulation Parameters:

• FEC Code Rate: 3/4

• FEC Modes: Turbo Code

• Symbol Rate 256 KSps to 30 MSps

• Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution

 

DSS QPSK Modulation Parameters:

• FEC Code Rates: 1/2, 2/3, 6/7 FEC Mode

• Symbol Rate 256 KSps to 30 MSps

• Excess Bandwidth (alpha): 0.1 to 0.5 with 0.01 Resolution

 

70 MHz I.F. Output Specifications:

• Frequency: 70MHz, Agile within +20 to -20MHz, 1Hz steps

• Power: 5 to -20 dBm, 0.5 dB steps

Note: the power output will be affected with temperature variations up to 2 dBm.

• Power Accuracty: 1 dB (CW mode and spectral output mode)

• In Band Spurious: 50 dBc

• Out of Band Spurious: 50 dBc

• Phase Noise:

@ 100 Hz, -71 dBc

@ 1 kHz, -81 dBc

@ 10 kHz, -91 dBc

@ 100 kHz, -101 dBc

@ 1 MHz, -111 dBc

• Impedance: 75 W

Monitored Parameters:

• Fault History

• Input Sync presence

• Output signal presence

• Faults: Temperature, supply voltages and fans

 

Transport Stream Inputs:

All TS inputs up to 8.5 Mbits/s

• M2P input, DV25

• DVB-SPI input, DB25 with loop through

• DVB-ASI input, BNC with DB25 loop through

• MPEG Bit/Byte clock output for modulator master mode operation

• Packet stuffing and recalculation of PCR for input data rate adjustment >0% and <40% of packets stuffing

• DVB-ASI sync mode for automatic data rate adjustment

 

External Clock input:

• 10 MHz input TTL on BNC connector

If external clock is present, unit automatically synchronizes to incoming 10 MHz. If clock absent, unit uses internal reference.


General Specifications:

• Line Power: 100-240 Vac, 50-60 Hz

• 2 lines x 18 Characters Vacuum Fluorescent Display

• Dimensions: 19” W x 21” D x 1.75” H (1U rack mount chassis)

• Operating temperature Specs 0-50c

 

Control Specifications:

• RS232, and 10 Base T Ethernet connections for configuration, monitoring and control

• Relay contact outputs for fault monitoring and automated redundancy switch control

• SNMP protocol supported

For more information call:

1.800.SENCORE (1.800.736.2673)

or 1.605.339.0100

Ask for ATSC product group

mailto:sales@sencore!com

Sencore Inc.

3200 Sencore Drive

Sioux Falls, SD 57107

U.S.A.