
-20 kHz to 300 MHz Noise Generator for Realistic G.hn Wave-2 & Gfast Testing
-Up to 24 Independent Noise Ports
-AWGN Dynamic Range-90 dBm/Hz to -160 dBm/Hz in 1dB steps (when using low noise mode injector)
Gfast technology promises to bring a wealth of new opportunities to Service Providers as well as manufacturers of DPUs, CPE Modems and Chipsets. This exciting new technology allows for a more efficient use of existing copper infrastructure by utilizing the spectrum above 30 MHz and by cancelling the crosstalk between pairs within a cable. This increases data rates far beyond current levels, making bandwidth-intensive applications such as IPTV and Triple Play available in many areas where it was not possible before.
The Model 4902 Universal Gfast Noise Generator is available in two versions – portable and rack-mountable. The portable unit provides 2 to 16 independent Arbitrary Waveform Generator (AWG) outputs and includes a keyboard and built-in display. The higher-density version is rack-mountable and may be configured for 2 to 24 independent AWG outputs.
User-friendly configuration software allows the user to select and build impairment models common to DSL network implementations using ADSL2+, VDSL2, VDSL2 vectoring and Gfast. A generous assortment of custom crosstalk as well as impulse noises (e.g., REIN, SHINE and PEIN) can be created. It can also generate a wide variety of interferences above 30 MHz that may impact Gfast deployments. These include background Gaussian noise, high frequency impulse noise from the AC electrical wiring (REIN) and other types of impulse noise (PEIN, SHINE & WHINE), FM radio, Broadcast TV, Spark Plug Ignition noise, PLC noise, Reverse Power Feed noise and more. In addition, user-defined files in several formats (such as MATLAB. CSV and Excel) may be imported. Optional noise modules automatically setup standards-based testing for TR-114, TR-105, TR-115, TR-100 and more.
Used by the UNH-IOL (University of New Hampshire Interoperability Laboratory) for Broadband Forum Gfast Certification Program testing.
The Model 4902-D4-120-TPD provides four channels of independent
differential mode noise injection.
Model 4902-2-300-COAX 2-Channel 300 MHz COAX Noise Injector
Model 4902-2-300L-TPD 2-Channel Differential Mode Noise Injector for twisted pair with low noise mode
Model Number | Description |
4902-Portable | Telebyte Portable computer w/built-in display & keyboard.
Includes Noise Generation Software. Accepts 1-4, 4902-AWGx cards. |
4902-HD |
Telebyte High-Density, rack-mountable computer.
Includes Noise Generation Software. Accepts 1-6, 4902-AWGx cards. |
4902-AWG2-300 | 2-Port AWG Card - 600 MS/s, supports 1 kHz to 300MHZ |
4902-AWG4-300 | 4-Port AWG Card - 600 MS/s, supports 1 kHz to 300MHZ |
4902-AWG2-30 | 2-Port AWG Card – 60 MS/s, supports 1 kHz to 30 MHz |
4902-AWG4-30 | 4-Port AWG Card – 60 MS/s, supports 1 kHz to 30 MHz |
4902-D4-120 | 4-Channel Differential Mode Noise Injector (10 kHz to 120 MHz) |
4902-2-300L-TPD | 2-Channel Differential Mode Noise Injector (20 kHz to 300 MHz) for Twisted Pair Cable. Interface is CAT6 RJ45 Connector. Includes low noise mode. |
4902-2-300-COAX | 2-Channel Coax Cable Noise Injector (20 kHz to 300 MHz) for Coaxial Cable. Interface is Coax F-Type Connector |
VxT-N48 | 48-Channel AWGN Generator/Injector (20 kHz to 30 MHz) |
4901-D1-Micro |
1-Channel Differential Mode Noise Injector (1 kHz to 30 MHz) Plus Micro Interrupts |
4902-N6 | Optional Noise Module for TR-067 |
4902-N10 | Optional Noise Module for TR-100 |
4902-N11 | Optional Noise Module for TR-114 |
4902-N12 | Optional Japanese Noise Library – Including TCM-ISDN Noise Files, SHDSL NTT Noise Files; Half, Single & Double ADSL Disturbers NTT Noise Files; 3-Band, 4-Band & 6-Band VDSL NTT Noise Files |
4902-N16 | Optional Noise Module for TR-105 |
4902-N17 | Optional Noise Module for TR-115 |
4902-N18 | Optional Noise Module for G.shdsl |
4902-N21 | Optional Noise Module for G.fast IR-337 |
4902-N22 | Optional Noise Module for Gfast WT-380 |
4902-Portable Specifications | |
Remote Commands | Telnet |
Included Software | Telebyte Universal G.fast Noise Generator Software |
Power supply | AC 90 V to 264 V, 47 to 63 Hz |
Operating Temperature Range | 0 to 50 º C |
Operating Relative Humidity | 5% - 95% non-condensing |
Mechanical Dimensions | DxWxH: 9.5" D x 13.5" W x 17.5" H |
Weight |
32 lbs |
Connectors |
10 USB 3.0 Ports, 4 USB 2.0 Ports (2
front), 2 RJ-45 Gigabit LAN |
Display | Integrated 17.3-in WUXGA+ (1920 x 1080) display |
4902-HD Specifications | |
Remote Commands | Telnet |
Included Software | Telebyte Universal G.fast Noise Generator Software |
Power supply | AC 90 V to 264 V, 47 to 63 Hz |
Operating Temperature Range |
0 to 50 º C |
Operating Relative Humidity |
5% - 95% non-condensing |
Mechanical Dimensions |
DxWxH: 19.5" D x 16.8" W x 7.0" H |
Weight |
32 lbs |
Connectors |
10 USB 3.0 Ports, 2 eSATA Ports, 2
RJ-45 Gigabit LAN |
4902-AWGx-30 Specifications |
|
Bandwidth |
1 kHz to 30 MHz |
Noise Outputs |
4902-AWG2-30: 2 |
Interference Profile Accuracy |
≤ 0.5 dB mean absolute error
(MAE) for Crosstalk PSD |
AWGN Crest Factor |
> 5 |
AWGN Gap |
< 10% |
Output Impedance |
50Ω unbalanced |
SMB Connectors |
4902-AWG2-30: 2 |
4902-AWGx-300 Specifications |
|
Bandwidth |
1 kHz to 300 MHz |
Noise Outputs |
4902-AWG2-300: 2 |
Interference Profile Accuracy |
≤ 0.5 dB mean absolute error
(MAE) for Crosstalk PSD |
AWGN Crest Factor |
> 5 |
AWGN Gap |
< 10% |
Output Impedance |
50Ω unbalanced |
SMA Connectors |
4902-AWG2-300: 2 |
4902-D4-120 Noise Injector Specifications | |
Bandwidth | 20 kHz to 120 MHz continuous frequency response of signal path |
Injection Type | Differential Mode |
Insertion Loss of Noise Injection Path | Differential Mode 0 dB ± 0.5dB |
Maximum RMS Output | +5 dBm into 50 Ω |
Crest Factor |
Greater than 5 |
Noise Floor | Below -150 dBm/Hz as measured at the output of the noise injector |
Connectors |
SMA: (2) Female Connectors per channel for Independent
Differential Mode noise from 4902-Portable or 4902-HD 8 Cat6 RJ-45 Connectors on front (2 Input/Outputs for each channel) |
Micro Interruptions |
Location: On any single channel
Method: Type-1, Type-2, or Type-3 as defined in TR-249 Issue 1 Interrupt Time: 5ms to 100ms in 1-ms increments |
4901-D1-Micro Specifications | |
Bandwidth |
1 kHz to 30 MHz |
Input Impedance |
50Ω unbalanced (100Ω unbalanced) |
Output Mode |
Differential, balanced |
Noise Floor |
Below –145 dBm/Hz as measured at the
output of the noise injector |
Insertion Loss |
13.0/35 dB ± 0.5 dB |
Connectors |
SMB Female Connector for
4902-Portable or 4902-HD, RJ45 (2) Female Connectors for Loop
Simulator (external cable provided) and for the modem. |
Micro Interruptions |
·
Method: Type-1 as defined in
TR-249 Issue 1 |
4902-2-300-COAX Specifications |
|
Bandwidth |
20 kHz to 300 MHz continuous frequency response of signal
path |
Injection Type |
Single Ended |
Insertion Loss of Noise Injection Path |
0 dB ± 0.5dB |
Maximum RMS Output |
+5 dBm |
Crest Factor |
Greater than 5 |
Noise Floor |
Below -150 dBm/Hz as measured at the output of the noise
injector |
Connectors |
SMA: (3) Female Connectors per channel for Independent
Differential Mode noise from 4902-Portable or 4902-HD; 4 F-Type Coax Connectors on front (2 Input/Outputs for each channel) |
4902-2-300L-TPD Specifications |
|
Bandwidth |
20 kHz to 300 MHz continuous frequency response of signal path |
Injection Type |
Differential Mode |
Insertion Loss of Noise Injection Path |
Differential Mode 0 dB ± 0.5dB |
Maximum RMS Output |
+5 dBm |
Noise Floor |
Below -166 dBm/Hz as measured at the output of the noise injector (with the low noise mode enabled) |
AWGN Dynamic Range | -90 dBm/Hz to -160 dBm/Hz in 1dB steps |
Connectors |
-SMA: (3) Female Connectors per channel for Independent
Differential Mode noise from 4902-Portable or 4902-HD; -4 Cat6 RJ-45 Connectors on front (2 Input/Outputs for each channel) |