VCL-2710, IEEE C37.94, Multi-Mode to Single Mode Optical Converter
Description
The VCL-2710, IEEE C37.94 Multi-Mode to Single-Mode Optical Converter is a ruggedized, sub-station-hardened converter that converts IEEE C37.94 Multi-Mode signal to Optical Single-Mode Optical signal. The equipment is designed to extend IEEE C37.94 multi-mode signals over extended single-mode optical fiber spans. The VCL-2710, IEEE C37.94 Multi-Mode to Single-Mode Optical Converter includes the clock synchronization and clock re-generation functions which allows it to transmit the IEEE C37.94 multi-mode signal over very long single-mode optical fiber links of up to 50dB optical link loss budget (i.e. typical reach of 167 Miles / 270 Kms).
DIN Rail Mount Version
1U high, standard 19-inch Rack Mount Version
VCL-2710 is designed for use in point-to-point applications. The VCL-2710 meets and complies with the IEC-61850-3, EMI, EMC, Surge and Temperature specifications making it suitable for sub-station installations to provide uninterrupted service even in the most demanding and harsh environments.
VCL-2710 is available in DIN Rail mount version and 1U high, standard 19-inch rack mount version.
Related Links
Features & Highlights:
- Complies to IEEE C37.94 protocol
- Power Budget 13dB to 50dB in Single Mode
- Single and 1+1 redundant power supply option
The most common application of the VCL-2710 is to allow the user to transmit the existing IEEE C37.94 multi-mode interface over a single-mode optical fiber link without the need to install any additional multiplexers or transmission equipment, which would otherwise be required to inter-connect the IEEE C37.94 Relays between near-end and the far-end substations.
Connectors
| Power | Terminal Block, 2-PIN Supply Connector |
| IEEE C37.94 Interface | ST Connector |
| Optical Interface | SFP Module |
| External Alarm | Terminal Block, 3-PIN Connector |
Chassis:
- DIN Rail Mounting.
- 1U high, 19-inch Rack Mounting
Power supply
- 48V DC (18V to 60V DC)
- 110V DC, 220V DC, 100~240V AC
- Redundant 1+1 power supply option available in 19-inch Rack Mount Version
C37.94 Interface Specifications
| Number of interfaces per card | 1 Tx, 1 Rx |
| Standards | IEEE C37.94 |
| Optical | 820nm / 850nm Multi-Mode |
| Optical Connector | ST |
| Optical Transmitter | LED |
Optical Interface Specifications
| Optical Module Type | SFP |
| Connector | LC |
| Fiber | Single-mode 1310 nm, 1550 nm |
| Distance | ≤ 15 KM, ≤ 40 KM, ≤ 80 KM, ≤ 160 KM, ≤ 180 KM, ≤ 200 KM, ≤ 260 KM, ≤ 270 KM (typical reach) Type Laser |
| Type | Laser |
CE Compliance
- Low Voltage Directive 2014/35/EU
- Electromagnetic Compatibility 2014/30/EU
Other Regulatory Compliances:
- RoHS
- CE Marking
- Complies with FCC Part 68 and EMC FCC Part 15
- Telcordia GR-1089 Surge and Power Contact
Electromagnetic Standards Compliance:
- EN 50081-2,
- EN 50082-2
- IEC 61000-6-2 (Immunity)
- IEC 610000-6-4 (Emission)
- Complies to IEEE and IEC standards
MTBF:
- Per MIL-HDBK-217F: ≥ 37 years @ 24C
- Per Telcordia SSR 332, Issue 1: ≥ 42 years @ 24C
Applications
Application: VCL-2710, C37.94 to Optical Converter
FAQs
Question 1: What is the latency across the VCL-2710 unit in ms, i.e., from the IEEE C37.94 input to the SFP output.
Answer: Less than 125 microseconds (i.e. 0.125 ms).
Question 2: What is the end-to-end transmission time in ms, i.e., the total time on the IEEE C37.94 interface on one unit, across the SMF link, and out the C37.94 interface on the other. (assuming a distance of 40Km / 25 Miles between the units).
Answer: The end-to-end time transmission time is less than 250 microseconds (i.e. 0.250 ms), assuming an optical span of 40KM / 25 Miles.
Question 3: What is the variation (jitter/wander) on the latency, e.g., +/- 125us
Answer: The unit boasts of a very precise clock recovery and jitter attenuation circuitry that makes it extremely suitable for very long optical spans. The output jitter is less than 0.05UI peak-to-peak (which is similar to DS1, TDM transmission equipment). The jitter and wander tolerance meets and exceeds the ITU Rec. G.823 specifications.
Question 4: In regards to the 48V DC supply, is your power supply negative ground, positive ground or free-floating? And does your power supply support the same environmental ratings as the VCL-2710?
Answer: It is a free-floating power supply and the 48V DC version of the equipment works over the range from 18V DC to 72V DC. It can work on 24V DC and 48V DC power inputs without requiring any modifications. The power input is protected against reverse polarity and the equipment is not damaged if the power input is connected backwards, in the reverse polarity. The equipment shall work only once you correct the input power polarity.