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Specifications, Rs232 control, Satellite input qam output general – Drake SCT4860 8PSK Sat-1024QAM Cable Transcoder User Manual

Page 4: Transport stream grooming

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Frequency Range: 950 mHz to 2150 mHz

Tuning Increment: 500 kHz

Acquisition Range: ±5.0 mHz minimum

Input Level: -25 dBm to -70 dBm

Input Impedance: 75 ohms, return loss of 10 dB minimum

I/Q Phase Imbalance: <1 Degree

I/Q Amplitude Imbalance: <1dB

Mode: qPSK, 8PSK

FEC: DCii, DVB, advanced turbo modes

VITERBI Autoscan: 1/2, 2/3, 3/4, 5/6, 6/7, 7/8 - DVB

5/11, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 7/8 - DCii

Turbo QPSK modes: 1/2, 3/4, 2/3, 5/6, 7/8

Turbo 8PSK modes: 2/3, 5/6, 8/9, 3/4, 4/5

Input Data Rate: 2 mbaud to 30 mbaud.

RS232 CONTROL

Data Link: 4800 baud interface to PS151 via power supply cable.

RS232 Input: DB-9 connector on PS151 for connection to modem or PC.

RS232 Output: DB-9 connector on PS151 for connection to additional transcoders.

Specifications

Specifications subject to change without notice or obligation.

SATELLITE INPUT

QAM OUTPUT

GENERAL

Operating Temperature Range: 0

o

C to +50

o

C, ambient.

Size: 1.1" W x 3.4" H x 13.25" D.

Weight: 1 lb. 6 oz.

Power Requirement: All voltages are provided by the Drake model PS151 power supply. PS151 power requirement: 90

to 260 VAC / 150 W, maximum w. 10 transcoders powered.

Output Impedance: 75 ohms, return loss of 10 dB minimum

Output Level: + 25 to +40 dBmV, displayed

Display Error: ± 2 dB maximum

Level Adjustment Increment: 1 dB, nominal

Frequency Range: 54 mHz to 864 mHz

Frequency Plan: Standard, iRC, or HRC CAtV channels or off-air broadcast channels.

Broadband Spurious: -60 dB, 5 mHz to 900 mHz

Broadband Noise: -75 dBc, 6 mHz bandwidth

Phase Noise: -103 dBc/Hz @ 10 kHz offset

Frequency Stability: ± 5 kHz

QAM I/Q Phase Error: <1 degree

Channel Amplitude Error: <1 dB

Carrier Suppression: 45 dB

MER: >40 dB, with blind equalizer.

Mode: 16, 32, 64, 128, 256, 512, 1024 qAm

Symbol Rate: 1 mbaud to 7 mbaud

FEC: itu-t J.83 Annex A or Annex B

TRANSPORT STREAM GROOMING

Auto clock mode: None

Fixed clock mode: Null packets are dropped or added as necessary to provide user selected fixed output baud rate.

PCR Restamping: When required.