R&S®CLG Cable Load Generator

Simulation of analog and digital cable TV networks with full channel loading

This is a discontinued product
More Information? Please contact us.
Typical loading of cable TV networks in Germany with analog and digital channels.
Typical loading of cable TV networks in Germany with analog and digital channels.
Output signal spectrum with a 15 dB tilt.
Output signal spectrum with a 15 dB tilt.
Typical loading of cable TV networks in Germany with analog and digital channels. Output signal spectrum with a 15 dB tilt.

Key Facts

  • Frequency range from 47 MHz to 1002 MHz
  • Up to 158 channels for US cable TV
  • Up to 119 channels for European cable TV

Brief Description

The R&S®CLG cable load generator is a multichannel signal generator for cable TV signals. It is the world's first instrument to simulate cable TV networks with full channel loading.

Features

  • Full simulation of cable TV networks
  • Easy configuration of complex test scenarios

Specifications

   
setting range 47 MHz to 1002 MHz
step size 1 Hz

Key Facts

  • Frequency range from 47 MHz to 1002 MHz
  • Up to 158 channels for US cable TV
  • Up to 119 channels for European cable TV
  • More than 53 dBc CNR and 60 dBc CSO/CTB
  • High MER of typ. 40 dB

Brief Description

The R&S®CLG cable load generator is a multichannel signal generator for cable TV signals. It is the world's first instrument to simulate cable TV networks with full channel loading. The R&S®CLG generates both digital and analog TV signals. These signals can be freely combined, allowing users to simulate any conceivable channel loading scenario in the lab.

Features & Benefits

  • Full simulation of cable TV networks
    • Any combination of digital and analog modulations
    • American and European channel spacing
    • Simulation of AC hum as superimposed amplitude modulation
    • Adjustable tilt and AWGN
    • External transport stream feeding and internal test pattern generation
    • Internal test pattern generation
    • Generation of CW signals for CSO/CTB measurements
  • Easy configuration of complex test scenarios
    • Separate level and frequency settings for each channel
    • Setting of tilt across all channels
    • Easy operation on a PC via a web GUI
    • Remote control using SCPI or SNMP
    • Memory space for over 100 user-defined instrument setups

Specifications

RF parameters
Frequency setting range 47 MHz to 1002 MHz
  step size 1 Hz
Output power sum power of all active channels 25 dBmV to 60 dBmV
  accuracy (at maximum output level and attenuator set to 0 dB) ≤ ±1 dB
  step size per channel 0.1 dB
  frequency response in 6 MHz channel ≤ 0.25 dB
CSO/CTB (in line with ANSI/SCTE 06 2009) with CW signals in 157 channels > 60 dB
Signal-to-noise ratio f ≤ 600 MHz > 53 dBc
  f > 600 MHz > 51 dBc
Modulation
QAM standards J.83/A (DVB-C), J.83/B, J.83/C (ISDB-C)
  constellations 64QAM, 256QAM
  MER 40 dB (typ.)
  content transport stream or PRBS
Analog TV standards PAL, SECAM, NTSC
  bandwidths 6 MHz, 7 MHz, 8 MHz
  content color bar test pattern and 1 kHz tone
OFDM standards ISDB-T
  bandwidths 6 MHz
  content PRBS
Arbitrary waveform generator sample rate max. 4 waveform files with 20 Msample/s each
Other   CW, FM radio
Simulation of signal impairments
Tilt linear across entire frequency range 0 dB to ±18 dB
AC hum AM modulation depth 0 % to 6 %
  hum frequency 47 Hz to 200 Hz, step size 0.1 Hz
AWGN C/N –60 dB to 0 dB in up to 16 channels
  noise bandwidth automatically coupled with symbolrate or userdefined to 10 MHz
Interfaces
RF output   F connector, 75 Ω
Transport stream input 10GigE 10GBase-CX4
Control interface Ethernet 10/100BaseT
10 MHz reference input   BNC, 50 Ω
General data
Operating temperature range   0 °C to +40 °C
Dimensions W × H × D 482.6 mm × 44.5 mm × 279.4 mm
(19.0 in × 1.75 in × 11.0 in)
Weight   3.2 kg (7.05 lb)
Typical loading of cable TV networks in Germany with analog and digital channels.
Output signal spectrum with a 15 dB tilt.
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