VCL-2710, IEEE C37.94, Multi-Mode to Single Mode Optical

VCL Products > IEEE C37.94 Solutions > VCL-2710, IEEE C37.94, Multi-Mode to Single Mode Optical Converter

Multi-Mode to Single Mode Optical Converter - DIN

VCL-2710, IEEE C37.94, Multi-Mode to Single Mode Optical Converter

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 62dB optical link loss budget (i.e. typical reach of 155 Miles / 250 Kms).

IEEE C37.94 Multi-Mode to Single-Mode Optical IEC-61850-3

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
Power Consumption < 10W

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	≤ 9 Miles / 15Km, ≤ 25 Miles / 40Km, ≤ 49 Miles / 80Km, ≤ 99 Miles / 160Km, ≤ 111 Miles / 180Km, ≤ 124 Miles / 200Km, ≤ 161 Miles / 260Km, ≤ 167 Miles / 270Km (typical reach)
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

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 Diagram:

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.

Mechanical Drawing (PDF)