Toner Cable MQM1000 User Manual

MQM1000

Multiplexing QAM Modulator with
Built-In Agile Upconverter

969 Horsham Road lHorsham, Pennsylvania 19044 USA l Phone: [phone] Fax: [phone] [e-mail]

The R.L. Drake model MQM1000 is a professional quality, digital headend transcoder
that accepts one or two MPEG2 digital inputs via two Asynchronous Serial Input (ASI)
connectors. These signals must be ATSC compatible streams if multiplexing is to be
performed and usually will have originated from a local TV broadcast station and may
have been transported over fiber links to the MQM1000. After multiplexing and null
packet management, the MQM1000 QAM modulates and up converts onto any
desired CATV or off-air output channel between 54 and 1002 MHz. The MQM1000
can also operate as a non-multiplexing QAM modulator when a single ASI input is
selected.

Features

• Front panel display and buttons allow easy setup and monitoring of operating
mode and parameters.

• High output, 61 dBmV, QAM modulator and very low phase noise agile upconvert­er are built in.

• Output is agile on CATV or broadcast channels from 54 to 1002 MHz.

• Dual ASI Inputs.

• TS Multiplexer for MPEG2 streams.

• Program filtering of both A and B input streams. User may select or drop any of
the incoming programs.

• ATSC PSIP is supported.

• MPEG program and minor channel number offsetting when multiplexing.

• Major channel number pass through or remarking is selectable when multiplexing.

• Rewriting of the MPEG tables is provided when two input streams are multiplexed.

• PCR correction is performed when necessary.

• RS232 remote control and monitoring capability with the included Drake Digital
Headend Control Software (v. 2.6 or later).

• High MER output signal quality.

• 1U tall package with internal power supply conserves rack space.

• Manufactured in the USA.

Specifications Subject To Change Without Notice Rev 05-12 ©Toner Cable Equipment, Inc.

969 Horsham Road lHorsham, Pennsylvania 19044 USA l Phone: [phone] Fax: [phone] [e-mail]

ASI Inputs

Inputs: Two DVB Asynchronous Serial Inputs (ASI).

270 Mbps ASI clock rate with desired transport stream of 10.76 MS/s,
ATSC, 19.37 Mbps.

QAM Modulator

Modulation Modes: 16QAM, 32QAM, 64QAM, 128QAM, 256QAM,512QAM or 1024QAM.

Refer to manual for available combinations of QAM modes and FECs.
Symbol Rate: 1 Ms/s to 7 Ms/s
Forward Error Correction (FEC): ITU-A (DVB) or ITU-B (DigiCipher® II)
I/Q Phase Error: Less than 1 degree
Carrier Suppression: 45 dB
Channel Amplitude Error: Less than 1dB
MER: Greater than 38 dB with blind equalizer

Null Packet Processing

Available in the fixed output clock mode

Analog EAS IF Input

Operating Input Level: +30 dBmV ±5 dB @ 45.75 MHz. 75 ohms
Auto Switching Level: +20 dBmV minimum

Upconverter RF Output

Output Frequency Range: 54 MHz to 1002 MHz
Channel Plan: Standard CATV, HRC, IRC or Broadcast
Frequency Stability: ±5 ppm
Maximum Output Level: +61 dBmV minimum, adjustable downward
Minimum Output Level: +45 dBmV
Output Level Accuracy: ±1 dB
Output Impedance: 75 Ohms with return loss better than 14 dB

(within output filter passband).
Spurious Outputs: -60 dBc from 40 MHz to 1000 MHz
Broadband Noise: Less than -12 dBmV (6 MHz bandwidth @ ±12 MHz)
Phase Noise: -101 dBc @ 10 kHz offset

RS232 Control

Data Link: 2400, 4800, 9600, or 19,200 baud interface via serial cable
RS232 Input: DB9 connector for connection to modem, PC,

or Drake SCTeci ethernet controller.
RS232 Output: DB9 connector for connection to additional units

General

Power: 90-132 VAC, 60 Hz, 40 W maximum
Weight: 7 lbs. (3.2 Kg.)
Size: 19" (48.3 cm) W x 1.75" (4.45 cm) H x 11.5" (29.2 cm) D
Operating Temperature: 0º C (32º F) to 50º C (122º F)

Specifications

MQM1000

Multiplexing QAM Modulator with

Built-In Agile Upconverter