R&S®CLG Cable Load Generator

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

This is a discontinued product

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Overview
Options

: 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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