rBT1250
rBT1250
10G Burst Mode Bit Error Ratio Tester
Semight rBT1250 is specially designed for optical line terminal (OLT) test of passive optical network (PON) applications, and supports 1.25G EPON, GPON, 2.5G XGPON, Combo PON, 10G EPON and 10G XGSPON burst bit error testing and analysis.
Features
High Compatibility
Supports various PON OLT rates of 10.3125 GBaud and below
Burst Test of Combo-PON
Dual reset signal, supports Combo-PON test
SD Test
Individual LOS monitoring/SD monitoring/LOS judgment for each channel
Built-in Clock Recovery
It can work in a real long-fiber environment, avoiding the influence of long-fiber on delay and jitter
Functions and Advantages
Adjustable Level Position For Various Testing
Provide 2 synchronous enable control signals for ONU laser: LVTTL 3.3V, configurable enable level.
Provide 2 synchronous reset control signals for OLT: LVTTL 3.3V, configurable level, adjustable reset position and width.
TX Specification
| Type | Item | Description |
| Pattern Generator Specification | Output | Differential/Single-ended NRZ |
| Terminal | AC Coupling | |
| Output Impedance | 100 Ω ± 10% | |
| Pattern | PRBS7, 23, 31, Custom Defined Pattern and CID | |
| Burst Signal Rate (GBaud) [1] | 1.25/2.5/9.953/10.3125 | |
| Pre-emphasis | 3-taps | |
| Output Amplitude (differential) | 100-600mVpp (typical) [2] | |
| Rise Time [3]
(20–80%) |
<40ps (typical) | |
| Fall Time [3]
(20–80%) |
<40ps (typical) | |
| Peak to Peak Jitter [4] | <12ps (typical) | |
| Laser Enable（TXEN） | LVTTL 3.3V | |
| Reset Signal | LVTTL 3.3V, Adjustable voltage level, trigger position, and width | |
| Connector | SMA | |
| Trigger and Clock Specification | Clock Output Amplitude | >250 mVp-p |
| Output Type | AC Coupled, Single-ended | |
| Div Ratio (Adjustable) | 64 |
[1]Compliant with EPON and GPON speeds
[2]Net measurement value at the transmitter’s end, default pre-emphasis/de-emphasis parameters
[3]Measured with 10.3125 GBaud NRZ signal
[4]Tested with/after Jitter separation
RX Specification
| Type | Item | Description |
| Error Detector Specification | Input | Differential NRZ |
| Terminal | AC Coupled | |
| Input Impedance | 100 Ω ±10% | |
| Input Range (Differential) [1] | 100 ~ 800mVp-p (typical) | |
| RSSI (Differential) [1] | 100mVp-p (typical) | |
| Pattern | PRBS7, 23, 31, CID | |
| Symbol Rate (GBaud) [2] | 1.25/2.5/9.953/10.3125 | |
| Clock Mode | Built-in Clock Recovery | |
| Connector | SMA |
[1]Take care of output amplitude from DUT as the high voltage signal may damage the receiver
[2]Compliant with EPON and GPON speeds.