Olympus CLV-U20 Light Source & CV-140 Processor with MH-236

Olympus CLV-U20 Universal Xenon Light Source & CV-140 Video System Center with MH-236 Pigtail Interface

The Olympus CLV-U20 Universal Light Source paired with the Olympus CV-140 Video System Center and the MH-236 Videoscope Pigtail Cable represents a benchmark workstation for high-fidelity visualization, diagnosis, and non-destructive internal inspections. Engineered for clinical diagnostic suites, shipboard medical bays, and offshore plant engineering hubs, this integrated platform pairs high-output daylight illumination with flexible signal processing.

The CLV-U20 houses a 300-watt short-arc xenon lamp delivering concentrated, color-balanced illumination matched to the absorption profiles of complex biological tissue and high-density industrial alloy surfaces. An integrated high-reliability diaphragm pump supplies adjustable insufflation and optical lens cleaning pressure. The CV-140 video system center incorporates high-speed CCD sensor signal acquisition, automated gain control (AGC), user-configurable edge enhancement, and an internal electronic shutter. The included MH-236 pigtail cable serves as the vital electro-optical interface bridge, routing video synchronization signals, scope switch telemetry, and camera control between legacy 100/140 series flexible scopes and the CV-140 processing chassis.

Model Details

• System Assembly Name: Olympus EVIS 140 Video Endoscopy System
• Primary Processor Model: Olympus CV-140 Video System Center
• Processor MPN: CV-140 / EVIS CV-140
• Light Source Model: Olympus CLV-U20 Universal Xenon Light Source
• Light Source MPN: CLV-U20
• Pigtail Interconnect Cable Model: Olympus MH-236 Pigtail Cable
• Pigtail MPN: MH-236 / OLY-MH236

Technical Details

Features

1. 300W Xenon Arc Optical Engine: Delivers 6000 K daylight-spectrum illumination with high luminous flux, paired with an emergency 100W halogen standby lamp featuring instant automatic changeover in the event of primary arc failure.
2. Multi-Format Video Architecture: Features dedicated RGBS, Y/C (S-Video), and Composite BNC outputs supporting simultaneous feed to medical CRTs, digital capture cards, flat-panel monitors, and external video documentation units.
3. Dual Iris & Auto-Gain Metering: Front-panel switchable Iris modes (“Average” for wide cavity inspection and “Peak” for pinpoint illumination) combined with intelligent electronic Automatic Gain Control (AGC) ensure consistent contrast without pixel blooming or underexposure.
4. Rugged All-Metal RFI/EMI Shielded Enclosure: Heavy-gauge aluminum alloy chassis engineered to mitigate electrical noise, cross-talk, and RF interference generated by high-frequency surgical electrosurgical units (ESU) or heavy auxiliary machinery.
5. Dedicated Scope-to-Processor Bridge (MH-236): High-integrity multichannel pigtail connector featuring gold-plated pin arrays and strain-relieved coiled shielding, eliminating digital artifacts and terminal fatigue across repetitive coupling cycles.

Compatibility

• Endoscope Scopes (Flexible Video): Olympus EVIS 140 Series (GIF-140, CF-140L/I, JF-140, TJF-140, PCF-140), EVIS 100 Series (GIF-100, CF-100L, BF-100), and EVIS 130 Series.
• Fiberscopes & Rigid Telescopes: Compatible with Olympus OES 10/20/40 series flexible fiberscopes and industrial rigid borescopes via light guide cable adaptors and dedicated Olympus OVC/OES TV camera heads.
• Peripherals & Recorders: Sony UP-55MD / UP-25MD Medical Printers, Olympus MH-867 / MH-993 alphanumeric keyboards, digital video recorders, and standard composite/RGBS/Y-C medical-grade monitors (Sony Trinitron PVM series, Olympus OEV series).
• Umbilical Interconnects: Olympus MH-236 pigtail cable, Olympus MD-148 pigtail, and Olympus MH-966 light control cables.

Frequently Asked Questions

What is the functional purpose of the Olympus MH-236 pigtail cable?

The MH-236 pigtail cable functions as the dedicated electronic connector interface that routes video signals, camera sensor timing pulses, and front-panel scope control switch triggers between Olympus 100 and 140 series flexible videoscopes and the CV-140 video processor console.

Can the Olympus CLV-U20 be operated on 220V/240V auxiliary power systems?

Yes. The CLV-U20 features an input voltage selector switch on its rear power-entry module. It can be toggled between nominal 100–120V AC and 220–240V AC (50/60 Hz), accommodating both commercial land-based grids and standard marine 220V single-phase electrical distribution circuits.

What happens if the primary 300W xenon lamp blows during an active inspection?

The CLV-U20 is built with an internal redundancy feature. If the 300W xenon lamp burns out or loses arc continuity, the system illuminates a front-panel emergency indicator and engages an auxiliary 12V 100W halogen standby lamp, providing immediate backup lighting to safely conclude the procedure.

Which video outputs does the CV-140 support for external monitors?

The CV-140 provides standard analog broadcast-grade video connections, including dedicated RGBS through 4x 75-ohm BNC terminals, 2x Y/C (S-Video) 4-pin mini-DIN ports, and 2x Composite (VBS) BNC connectors. These can be run concurrently to monitors, capture boxes, or video printing hardware.

How do I adjust video contrast and brightness when using the EVIS 140 system?

Brightness is controlled automatically through the CLV-U20’s motorized servo iris linked to the CV-140’s optical feedback loop. You can manually adjust the iris metering pattern between “Average” (uniform field) and “Peak” (pinpoint focal area), or select manual illumination attenuation using the 17-step rotary optical shutter on the light source front panel.