| Rohde & Schwarz RTO6-K13 Specifications |
| R&S RTO6-K13 Clock Data Recovery |
| General Description |
The R&S RTO6-K13 real-time clock data recovery (CDR) option activates the hardware CDR circuitry integrated into the R&S RTO64 oscilloscope. It provides real-time clock recovery for non-return-to-zero (NRZ) serial data up to 5.0 Gbps. The recovered clock may be used for triggering and jitter analysis. |
| Hardware Clock Data Recovery (CDR) |
Description |
Fully digital implementation of PLL-based clock data recovery |
| Sources |
Channel 1, channel 2, channel 3, channel 4 |
| Configuration parameters |
PLL order (first or second), nominal bit rate, loop bandwidth, relative bandwidth, damping factor, unit interval offset |
| Bit rate range |
| R&S RTO6-B90, R&S RTO6-B91, R&S RTO6-B92, R&S RTO6-B93 options |
200 kbps to 2.5 Gbps |
| R&S RTO6-B94 option |
200 kbps to 2.5 Gpbs standard, 400 kbps to 5.0 Gbps when operating at 20 Gsample/s real-time sampling rate 8 |
| R&S RTO6-B96 option |
400 kbps to 5.0 Gbps standard, 200 kbps to 2.5 Gpbs when operating at 10 Gsample/s real-time sampling rate 9 |
| Relative bandwidth |
1/500 to 1/3000 of the nominal bit rate |
| Damping factor |
0.5 to 1.0; relevant for second order PLL only |
| Unit interval offset |
0.0 to 1.0 |
| Trigger Modes |
CDR |
Triggers on clock signal recovered from the trigger source signal; phase of the trigger instant user-selectable as a fraction of bit period |
| Serial pattern |
Main trigger mode "serial pattern" supports the hardware CDR as additional clock source; sampling point user-selectable as a fraction of bit period |
| Jitter Analysis |
The data and clock timing information of the hardware CDR may be acquired in real-time concurrently to the input data waveform. Analysis of the real-time CDR timing information is possible by means of compatible measurement, analysis, and visualization tools provided in the R&S RTO6-K12 jitter analysis option. 10 |
| Measurement functions |
Time-interval error (TIE), data rate, the unit interval |
| Math functions |
CDR transform interprets the acquired clock timing information and generates a synthetic clock waveform that is time-correlated to the input data waveform |
- In general terms, the frontend of the R&S RTO6-B94 option samples at 20 Gsample/s when: at most one channel from each pair {channel1, channel2} and {channel3, channel4} is active; and the user-selected sampling resolution in real-time sampling mode or interpolated time sampling mode is 50 ps or smaller.
- In general terms, the frontend of the R&S RTO6-B96 option samples at 20 Gsample/s when at most one channel from each pair {channel1, channel2} and {channel3, channel4} is active, otherwise the sampling rate is 10 Gsample/s.
- Real-time CDR timing information can be acquired when the frontend is operating at 10 Gsample/s real-time sampling rate.
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