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).
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.
Valiant Communications is an ISO 9001:2015, ISO 10001:2018,
ISO 14001:2015, ISO 27001:2013 and ISO 45001:2018 certified equipment manufacturer.
Project & Services
VCL IP/MPLS Routers
Teleprotection over E1, C37.94, MPLS-TP, MPLS / IP, IEC-61850 GOOSE
IEEE C37.94 Solutions
VCL-PMU-30, Phasor Measurement Unit (PMU)
VCL-PDC, Phasor Data Concentrator (PDC)
Cyber Security Solutions
Next Generation Firewall
GPS / GNSS, Primary Reference Clocks (G.811)
GPS / GNSS NTP Time Server
PTP IEEE-1588v2 Grandmaster, PTP Slave, PTP Transparent Clock
NTP to IRIG-B, PTP to IRIG-B
GPS to IRIG-B, GPS to 1PPS Servers
Time Distribution, IRIG-B, 1PPS, RS-232 / RS-485
SDH with MPLS-TP & SONET Multiplexers
E1 PDH, Optical Multiplexer & Digital Cross Connect
IP over TDM / Ethernet over TDM
TDM over IP / Ethernet / Packet / MPLS
E1 / T1 APS, 1+1 Automatic Protection Switch, E1 / T1 Failover
1+1 Ethernet Failover / AB Fallback Switch
Groomer (Hi-Z Non-Intrusive Monitoring) - E1, T1 and STM-1
E1 and T1 Echo Cancellers & VQE
Serial to Ethernet and MODBUS Converters
Patch Panels, AC DC Converters, Passive Products