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Details
View of the optical node
View after removing the top cover
The included power cord
Optical node OD-010R61 converts optical signals into RF electrical signals (forward channel) and vice versa (return channel). It cooperates with optical transmitters of MOS-211x series ( R81720, R81720B) transmitting modulated light over single-mode optical fiber, and in the case of using the return channel - also with ROS-121M R81721 receiver.
The optical node is mainly used in HFC CATV systems. In forward path the device receives modulated optical signal and converts it into RF signals within the range of 108-1002 MHz and in return channel the node modulates outgoing optical signal with input data contained within 5-65 MHz range. It is possible to order nodes working in other return channel bands (see the details at the end of this page). The maximum output level of the RF signals is 106 dBuV, which is sufficient for distributing them to 20-60 subscriber outlets without using additional amplifiers.
Distinguishing features
- software settings of all parameters
- internal diagnostic system
- monitoring of settings on LED display (incl. optical signal level)
- ingress blocking filter (additional filter in return path)
- FP laser diode for CATV applications with return channel
- possibility of remote control and monitoring
- built-in 5 MHz generator
- GaAs push-pull technology
- microprocessor controlled AGC
- connectors: SC/APC (optical); 3xF RF (OUT and 2x TEST -20 dB)
Specifications
| Name | OD-010R61 |
| Code | R81727 |
| Forward channel | |
| Optical wavelength range [nm] | 1100-1600 |
| Optical input level (AGC range) [dBm] | -7...2 |
| Noise current density [pA/sqrt(Hz)] | 7.0 |
| RF frequency range* [MHz] | 47/75/87/108-1002 |
| Impedance [Ω] | 75 |
| Return loss [dB/MHz] | 18/40 (-1.5 dB/oct) |
| Frequency response [dB] | +/- 0.75 dB |
| Output level (AGC ON, 4.9% OMI) [dBμV] | 106 |
| Output level CTB (EN50083-3) [dBμV] | 106 (42 channels) |
| Output level CSO (EN50083-3) [dBμV] | 108 (42 channels) |
| Interstage attenuator (forward path) [dB] | 0-10 (step 1) |
| Interstage equalizer (forward path) [dB] | 0/3/6/9 (switch) |
| Test output attenuation [dB] | 20 +/-0.7 |
| Return channel | |
| Laser type | FP |
| Optical output power* [mW] | 1/2 |
| Wavelength** [nm] | 1310 +/-10 |
| Input frequency range* [MHz] | 5-30/55/65/85 |
| Ingress blocking filter [MHz] | < 15 |
| Input level [dBμV] | 75-95 |
| Attenuator (range) [dB] | 0-25 (step 1) |
| Return loss [dB] | 18 |
| Test output attenuation [dB] | 20 +/-0.5 |
| General | |
| Power consumption [W] | 7 |
| Operating temperature [oC] | -20...50 |
| Dimensions; Weight [mm; kg] | 185/95/47; 0.9 |
* other characteristics of the return channel and/or more powerful laser (2mW) are available on request - for details please contact our sales department:
OD010R31 5-30/47-1002 MHz 1 mW
OD010R32 5-30/47-1002 MHz 2 mW
OD010R51 5-55/75-1002 MHz 1 mW
OD010R52 5-55/75-1002 MHz 2 mW
OD010R61 5-65/87-1002 MHz 1 mW
OD010R62 5-65/87-1002 MHz 2 mW
OD010R81 5-85/108-1002 MHz 1 mW
OD010R82 5-85/108-1002 MHz 2 mW
OD010R31 5-30/47-1002 MHz 1 mW
OD010R32 5-30/47-1002 MHz 2 mW
OD010R51 5-55/75-1002 MHz 1 mW
OD010R52 5-55/75-1002 MHz 2 mW
OD010R61 5-65/87-1002 MHz 1 mW
OD010R62 5-65/87-1002 MHz 2 mW
OD010R81 5-85/108-1002 MHz 1 mW
OD010R82 5-85/108-1002 MHz 2 mW
** on special order there are also available 2 mW DFB lasers working in CWDM band (1470...1610 nm).