Acterna ONT-50 Optical Network Tester Mainframe (Pre-Owned)

Key Features At A Glance

• Four-slot modular mainframe — customer specifies module mixture; slots function simultaneously and independently
• Supports complete DWDM testing including OSA, 10 Gbit/s BERT, Q-factor measurement, and Packet over SONET/SDH
• World's first dual-port optical spectrum analysis (OSA-200) for simultaneous measurements at two DWDM points
• OC-192/STM-64 line interface at 9.95328 Gbit/s, 1550 nm — supports concatenated and non-concatenated sub-rate mappings down to STS-1/STM-1
• OC-48/STM-16 module covers OC-3/12/48 and STM-1/4/16 with both 1310 nm and 1550 nm transmitters
• 12.1" color TFT touchscreen (800×600 SVGA) with web-browser-based GUI; remote-controllable via standard web browser over LAN
• OQM-200 Optical Q-Factor measurement in typically under 30 seconds, covering Q-range 4 to 13 (BER 10⁻⁴ to 10⁻⁴⁰)
• Field-upgradeable architecture with software updates via Internet; SCPI remote control over RS232 or LAN (TCP/IP)

The Acterna ONT-50 Optical Network Tester is a four-slot modular mainframe test platform built to address the convergence of DWDM, high-speed SONET/SDH, and Packet over SONET/SDH (PoS) technologies in carrier backbone networks. The system was designed to ease installation of multichannel DWDM systems, mimic and troubleshoot IP traffic conditions, and simplify the provisioning of SONET/SDH Multiservice Provisioning Platforms (MSPPs). Each of the four mainframe slots accepts field-upgradeable modules that operate simultaneously and independently, allowing a single mainframe to combine digital and optical test modules for multi-application and multi-port measurement.

Per the datasheet, the ONT-50 supports complete DWDM testing across optical spectrum analysis, 10 Gbit/s BER testing, Q-factor measurement, and Packet over SONET/SDH analysis. Listed applications include reducing network installation time of DWDM systems, troubleshooting IP traffic conditions over PoS, and provisioning MSPPs. The platform is intended for carrier backbone deployment scenarios in which long-haul fiber networks have moved from single-wavelength to dense WDM systems, and where SONET/SDH line rates have evolved to 10 Gbit/s alongside the growth of IP traffic carried over HDLC/PPP-like framing per RFC 1662.

ValueTronics International, LLC operates a 20,000 sq ft secure warehouse and test facility at 1675 Cambridge Drive in Elgin, Illinois, where instruments such as the ONT-50 are inventoried, inspected, and tested before they ship. Specialized optical network testers — particularly multi-module mainframes with mixed DWDM, BERT, Q-factor, and PoS configurations — benefit from this hands-on inspection model rather than the pass-through approach used by drop-shippers and online brokers who never physically handle the equipment.

Brand Heritage

Acterna emerged from the late-1990s consolidation of telecommunications test equipment vendors that produced Wavetek, Wandel & Goltermann, and TTC into Acterna LLC. Acterna was later acquired by JDSU in 2005, and JDSU's network and service enablement business was subsequently spun off as Viavi Solutions in 2015, which remains the current corporate home for the legacy Acterna optical network test product lines.

Accessories Supplied

• Mainframe with 4 free slots available for configuration
• Manual in English
• Color TFT display touchscreen
• Protective cover

Product Core & Specifications

Specification	Value
Power Supply (nominal range of use)
AC line voltage	100 to 240 V
AC line frequency	50/60 Hz
Safety class	Class I (per IEC 1010-1)
Ambient Temperature
Nominal range of use	+5 to +40 °C / 41 to 104 °F
Storage and transport range	−20 to +60 °C / −4 to 140 °F
Physical
Dimensions (W × H × D)	approx. 350 × 323 × 211 mm (13.8 × 12.7 × 8.3 in)
Weight	approx. 10 kg / 22 lb (includes protective cover, without modules)
Clock and Synchronization
Internal master clock accuracy	±4.6 ppm (meets T1.101 stratum 3/3E accuracy)
External sync (50/75 Ω unbalanced, BNC)	Reference clock: 1 MHz, 1.544 MHz, 2.048 MHz, 5 MHz, 10 MHz; accuracy ±50 ppm
External sync (100/120 Ω balanced, Bantam)	E1 (HDB3) 2.048 Mbit/s, DS1 (B8ZS/AMI scrambled) 1.544 Mbit/s; accuracy ±50 ppm
Clock outputs (50 Ω unbalanced, BNC, TTL)	1.544 MHz clock, 2.048 MHz clock
Interfaces
Standard interfaces	Parallel port, serial port, universal serial bus (for future use), PCMCIA port, floppy disk drive, Ethernet (RJ-45), VGA connector
Display
Color TFT touchscreen	12.1", 65 536 colors
Resolution	800 × 600 pixels (SVGA standard)
Architecture
Slots	4 slots free for configuration
Remote control	Interactive via TCP/IP and standard browser (LAN); SCPI commands via RS232 or LAN (TCP/IP)

Important: Maximum allowable total input power on the OSA-160/OSA-200 optical ports is +23 dBm; maximum destructive input power on the OC-48/STM-16 and OC-192/STM-64 receivers is +3 dBm and +2 dBm respectively.Important: ONT-50 mainframe (BN 3070/01) ships with 4 free slots available for configuration; at least one hardware module must be ordered separately. A maximum of 4 slots can be fitted, and combinations of different modules are possible in one mainframe.Important: An optical connector adapter (FC-PC, SC-PC, or ST) must be ordered separately for the ONT-50; the mainframe is not delivered with a connector adapter pre-installed.Important: Power outage function listed as 'in preparation' on the datasheet.Important: Multiport up to 10 Gbit/s for BERT and PoS listed as 'in preparation' on the datasheet.Important: FEC support on the OQM-200 Optical Q-factor Module listed as 'in preparation' on the datasheet.Important: SDH mappings on the IP/PoS Book listed as 'in preparation' on the datasheet.Recommended pairing: the Acterna OLA-15 Optical Attenuator (variable, 3 to 60 dB, calibrated at 1310 nm and 1550 nm, 0.05 dB resolution) is listed in the ONT-50 datasheet as a companion for line-up of optical links and receiver sensitivity measurements.

About this used unit

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.