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CS-03, Part VIII, - Requirements and Tests Methods for Digital Subscriber Line (xDSL) Terminal Equipment
3.0 Network Protection Requirements and Test Methods
3.1 Laboratory Environment
All tests to determine compliance with these requirements shall be conducted in a laboratory environment at normal room temperature and humidity.
3.2 Transmitted Spectral Response
3.2.1 Requirements
3.2.1.1 Power Spectral Density at the U-R Interface for ADSL
The Power Spectral Density (PSD) of the signal transmitted over the ADSL upstream channel (ATU-R output) shall not exceed the PSD mask in Figure 3.2.1.1. Table 3.2.1.1 provides the numerical values for the mask.
| Frequency Band (kHz) | PSD (dBm/Hz) across 100 ohms |
|---|---|
| 0.2 < f ≤ 4 | -97.5 |
| 4 < f ≤ 25.875 | -92.5 + 21.5 x log 2(f/4) |
| 25.875 < f ≤ 138 | -34.5 |
| 138 < f ≤ 307 | -34.5 - 48 x log2(f/138) |
| 307 < f ≤ 1221 | -90 |
| 1221 < f ≤ 1630 | -90 peak, with max power in the [f, f + 1 MHz] window
of (-90 - 48 x log2(f/1221) + 60) dBm |
| 1630 < f ≤ 30000 | -90 peak, with max power in the [f, f + 1 MHz] window of -50 dBm |
Note 1: The breakpoint frequencies and PSD values are exact.
Note 2: Above 25.875 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth. Below 25.875 kHz, the peak PSD shall be measured with a 100 Hz resolution bandwidth.
Note 3: The power in a 1 MHz sliding window
is measured in a 1 MHz bandwidth, starting at the measurement
frequency.
Figure 3.2.1.1: ATU-R Upstream Transmission PSD Mask for ADSL
3.2.1.2 Power Spectral Density at the U-R Interface for ADSL2
| Frequency Band (kHz) | PSD (dBm/Hz) across 100 ohms |
|---|---|
| 0.2 < f ≤ 1.5 | -46.5 |
| 1.5 < f ≤ 3 | -34.5 + 12 x log 2(f/3) |
| 3 < f ≤ 138 | -34.5 |
| 138 < f ≤307 | -34.5 - 48 x log2(f/138) |
| 307 < f ≤ 1221 | -90 peak, with max power in the [f, f + 100 kHz] window of -42.5 dBm |
| 1221 < f ≤ 1630 | -90 peak, with max power in the [f, f + 1 MHz] window
of (-90 - 48 x log2(f/1221) + 60) dBm |
| 1630 < f ≤ 30000 | -90 peak, with max power in the [f, f + 1 MHz] window of -50 dBm |
Note 1: The breakpoint frequencies and PSD values are exact.
Note 2: Above 3 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth. Below 3 kHz, the peak PSD shall be measured with a 100 Hz resolution bandwidth.
Note 3: The power in a 1 MHz sliding window is measured in a 1 MHz bandwidth, starting at the measurement frequency.
Figure 3.2.1.2: ATU-R Upstream Transmission PSD Mask for ADSL2 All Digital Mode
3.2.1.3 Power Spectral Density at the U-R Interface for ADSL2 All Digital Mode Spectral Compatibility with ISDN
| Frequency Band (kHz) | PSD (dBm/Hz) across 100 ohms |
|---|---|
| 0.2 < f ≤ 1.5 | -46.5 |
| 1.5 < f ≤ 3 | -46.5 + (inband peak PSD + 46.5) x log 2(f/1.5) |
| 3 < f ≤ f1 | inband peak PSD |
| f1 < f ≤ f2 | inband peak PSD - 48 log 2(f/f1) |
| f2 < f ≤ 1221 | -90 |
| 1221 < f ≤ 1630 | -90 peak, with max power in the [f, f + 1 MHz] window
of (-30 - 48 x log2(f/1221)) dBm |
| 1630 < f ≤ 30000 | -90 peak, with max power in the [f, f + 1 MHz] window of -50 dBm |
Note 1: The breakpoint frequencies and PSD values are exact.
Note 2: Above 3 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth.
Note 3: The power in a 1 MHz sliding window is measured in a 1 MHz bandwidth, starting at the measurement frequency.
| Designator | Inband peak PSD (dBm/Hz) |
Frequency f1 (kHz) |
Frequency f2 (kHz) |
|---|---|---|---|
| ADLU - 32 | -34.5 | 138 | 307 |
| ADLU - 36 | -35 | 155.25 | 343 |
| ADLU - 40 | -35.5 | 172.5 | 379 |
| ADLU - 44 | -35.9 | 189.75 | 415 |
| ADLU - 48 | -36.3 | 207 | 450 |
| ADLU - 52 | -36.6 | 224.25 | 485 |
| ADLU - 56 | -36.9 | 241.5 | 520 |
| ADLU - 60 | -37.2 | 258.75 | 554 |
| ADLU - 64 | -37.5 | 276 | 589 |
Figure 3.2.1.3(a): ATU-R Upstream Transmission PSD Mask for ADSL2 All Digital Mode
Figure 3.2.1.3(b): ATU-R Upstream Transmission PSD Designator for ADSL2 All Digital Mode
3.2.1.4 Power Spectral Density at the U-R Interface for ADSL2 READSL
The Power Spectral Density (PSD) of the signal transmitted over the ADSL2 READSL upstream channel (ATU-R output) shall comply with either of the following PSD masks: Mask 1 given in Figure 3.2.1.4(a); or Mask 2 given in Figure 3.2.1.4(b). Table 3.2.1.4(a) provides the numerical values for Mask 1, and Table 3.2.1.4(b) provides the numerical values for Mask 2.
| Frequency Band (kHz) | PSD (dBm/Hz) across 100 ohms |
|---|---|
| 0.2 < f ≤ 4 | -97.5, with max power in the 0-4 kHz band of +15 dBm |
| 4 < f ≤ 25.875 | -92.5 + 22.13 x log2(f/4) |
| 25.875 < f ≤ 103.5 | -32.9 |
| 103.5 < f ≤ 686 | max{-32.9 - 72 x log2 (f/103.5), 10 x log10[0.05683 x (fx103)-1.5]} |
| 686 < f ≤ 1411 | -100 |
| 1411 < f ≤ 1630 | -100 peak, with max power in the [f, f + 1 MHz] window
of (-110 - 48 x log2(f/1411) + 60) dBm |
| 1630 < f ≤ 5275 | -100 peak, with max power in the [f, f + 1 MHz] window
of (-110 - 1.18 x log2(f/1630) + 60) dBm |
| 5275 < f ≤ 30000 | -100 peak, with max power in the [f, f + 1 MHz] window of -52 dBm |
| Frequency Band (kHz) | PSD (dBm/Hz) across 100 ohms |
|---|---|
| 0.2 < f ≤ 4 | -97.5, with max power in the 0-4 kHz band of +15 dBm |
| 4 < f ≤ 25.875 | -92.5 + 23.43 x log2(f/4) |
| 25.875 < f ≤ 60.375 | -29.4 |
| 60.375 < f ≤ 686 | max{-29.4 - 72 x log2 (f/60.375), 10 x log10[0.05683 x (fx103)-1.5]} |
| 686 < f ≤ 1411 | -100 |
| 1411 < f ≤ 1630 | -100 peak, with max power in the [f, f + 1 MHz] window
of (-110 - 48 x log2(f/1411) + 60) dBm |
| 1630 < f ≤ 5275 | -100 peak, with max power in the [f, f + 1 MHz] window
of (-110 - 1.18 x log2(f/1630) + 60) dBm |
| 5275 < f ≤ 30000 | -100 peak, with max power in the [f, f + 1 MHz] window of -52 dBm |
Figure 3.2.1.4(a): ATU-R Upstream Transmission PSD Mask 1 for ADSL2 READSL
Note 1: The breakpoint frequencies and PSD values are exact.
Note 2: Above 25.875 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth. Below 25.875 kHz, the peak PSD shall be measured with a 100 Hz resolution bandwidth.
Note 3: The power in a 1 MHz sliding window is measured in a 1 MHz bandwidth, starting at the measurement frequency.
Figure 3.2.1.4(b): ATU-R Upstream Transmission PSD Mask 2 for ADSL2 READSL
Note 1: The breakpoint frequencies and PSD values are exact.
Note 2: Above 25.875 kHz, the peak PSD shall be measured with a 10 kHz resolution bandwidth. Below 25.875 kHz, the peak PSD shall be measured with a 100 Hz resolution bandwidth.
Note 3: The power in a 1 MHz sliding window is measured in a 1 MHz bandwidth, starting at the measurement frequency.
