Rohde and Schwarz CLG
Cable Load Generator
Contact us for pricing and availability.
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.
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
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
| 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) | |
List of Options
| CLG-K2 | Basic waveform library |
| CLG-K3 | Extended Waveform Library (user-defined) |
| TSStream | Multi-TS Streaming Software / Streaming of MPEG transport streams over IP |