Toner Cable QTM QAM User Manual

QTM

QAM Transcoder Module 1x QPSK/8PSK 1x QAM

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

QTM (QAM Transcoder Module) accepts one input in QPSK or 8PSK format, and delivers one output in
QAM format in the 54-864 MHz range.

The four available models are:

1. QTM-II - accepts one input in QPSK format, and delivers one output in QAM 64 mode.

2. QTM-HD - accepts one input in QPSK or 8PSK format, and delivers on output in QAM 256 mode.

3. QTM-HD PLUS - the same as QTM-HD, but capable of QAM 512/1024 modes.

4. QTM-HD NPU - the same as QTM-HD, but with a “Null Packet” feature that allows adding/removing
null packets to/from the input stream.

Features

• Supports the 8PSK modulation typically used for
High-Definition TV programming

• Supports ITU-T J.83 Annex A and Annex B standards
(QAM 16, 32, 64, 128, 256, 512, and 1024)

• Compact design allows for deployment of 8
transcoders, and power & control module, in 3RU
rack space

• Optional Headend Web Server allows for remote
monitoring and control of each transcoder

• Optional Standby Power Supply allows for uninter­rupted service in the unlikely event of a primary
power supply failure

Ordering Information

Model Stock # Description

QTM-II 6231A QAM Transcoder Module; QPSK input, QAM 64 output
QTM-HD 6241 QAM Transcoder Module; QPSK/8PSK input, QAM 256 output
QTM-HD PLUS 6242 QAM Transcoder Module; QPSK/8PSK input, QAM 512/1024 output
QTM-HD NPU 6278 QAM Transcoder Module; QPSK/8PSK input, QAM 256 output; Null Packet

add/remove capability
QTRC 6233 Rack Chassis; 3RU (holds up to 8 QTM modules)
QTPCM PLUS 6232B QT Power and Control Module (one per chassis)

Optional Equipment

QT-HWS-II 2728 QTM Headend Web Server for remote monitoring and control
QTSPS 6239A QT Stand-by Power Supply with integrated fan tray (supports 2 fully-loaded rack chassis)
QTHF 6235 QT 1RU rack-mounted fan tray
QTRFC 6234 1 8-port QAM combiner (mounts on the top of the Rack Chassis 6233)
QTRFS 6234 2 8-port L-band Splitter (mounts underneath the Rack Chassis 6233)
QTRFS-2 6225 2 2 x 4-port L-band Splitter (mounts underneath the Rack Chassis 6233)

Specifications Subject To Change Without Notice Rev 02-11 ©Toner Cable Equipment, Inc.

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

QTM

QAM Transcoder Module 1x QPSK/8PSK 1x QAM

Specifications

Connector: “F” Female
Standards

QTM-II: QPSK

QTM-HD: QPSK and 8PSK
QTM-HD PLUS: QPSK and 8PSK
QTM-HDP NPU: QPSK and 8PSK

Symbol Rate: Variable; 2 to 45 MSymbols/sec (Mbaud)
Frequency Range: 950 to 2150 MHz
Frequency Granularity: 1 MHz
Bandwidth: Variable, up to 36 MHz
Capture Range: ± 5 MHz
Code Rate: Viterbi – Auto Detect
Forward Error Correction DVB / DigiCiper® II
(FEC):
Input Level: -65 to -20 dBm
Impedance: 75 Ω
Return Loss: 8 dB

Connector RF Output: “F” Female
QAM Modulation Modes

QTM-II: 16, 32, 64

QTM-HD: 16, 32, 64, 128, 256
QTM-HD PLUS: 16, 32, 64, 128, 256, 512, 1024
QTM-HDP NPU: 16, 32, 64, 128, 256

DVB Symbol Rate: Variable; up to 12.5 Msym/sec (MBaud)
Frequency Range: 54 to 864 MHz
QAM Tuning

NTSC: Per channel’s number from 2 to 135

PAL: Per channel’s center-frequency (12.5 kHz increments)
RF Level: +40 dBmV (120 dBμV)
RF Level LCD Screen Error: ± 2 sB
RF Level Adj. Range: 30 to 40 dB
Frequency Tolerance: ± 0.5 kHz @ 77 °F (25 °C)
Frequency Stability: ± 5 kHz over 32 to 122 °F (0 to 50 °C)
Amplitude Flatness: ± 0.25 dB (over 6 MHz channel)
Phase Noise: -98 dBc (@ 10 kHz)
Spurious: -60 dBc
Broadband Noise: -75 dBc (@ +40 dBmV output level, 4 MHz bandwidth)
Impedance: 75 Ω
Return Loss: 12 dB
Spectral Inversion: Auto Recognition
Carrier Suppression: 55 dB
SNR: Greater than 40 dB
MER: Greater than 40 dB
I/Q Phase Error: Less than 1 degree
I/Q Amplitude Imbalance: Less than 1%

Indicators

QT Module: Status (Green LED)

QTPCM Module: LCD Screen
Local Monitoring: Front-panel 6-character, 2-line LCD screen
Local Control: Front-panel Navigational Key-pad
Remote Monitoring/Control: GUI-based menu via Web browser

(Available if the optional QT-HWS-II module is installed)

INPUT OUTPUT Modes 1 & 2

ALARMS / MONITORING / CONTROL

Dimensions (WxDxH)

QT Module: 1.5 x 10.6 x 5.25 inches (38 x 270 x 134 mm)

QTPCM Module: 4.5 x 10.6 x 5.25 inches (114 x 270 x 134 mm)

QTRC Rack Chassis: 19 x 12.0 x 5.25 inches (483 x 305 x 134 mm)

Power: 105 to 240 VAC; 50/60 Hz
Power Dissipation

QT Module: 10 W

Fully-loaded Rack Chassis: 87 W (8 QT Modules + 1 QTPCM)

Weight

AQM Module: 1.7 lbs (0.77 kg)

Fully-loaded Rack Chassis: 28 lbs (12.7 kg)
Operating Temperature: 32 to 122 °F (0 to 50 °C)
Storage Temperature: -13 to 158 °F (-25 to 70 °C)
Operating Humidity: 0 to 95% RH @ 35 °C max, non-condensation
Storage Humidity: 0 to 95% RH @ 35 °C max, non-condensation

GENERAL