11LO9I
Single-beam oscilloscope cathode-ray tube
Description
11LO9I is an single-beam oscilloscope cathode-ray tube for visual observation and measurement of electrical processes in electronic equipment. It converts an electrical signal into a visible image on a phosphor screen and serves as the display element inside compatible equipment.
Full descriptionCollapse description
11LO9I function
The tube operates with heater, acceleration, focusing and beam-deflection circuits. These circuits determine image brightness, position and shape. Connection and permitted operating modes must follow the documentation for the instrument in which the CRT is installed.
11LO9I has a flat rectangular green screen with a 60 × 80 mm working area and a parallax-free scale. The design includes one post-acceleration stage, blanking plates and electrostatic focusing and deflection.
Identification and selection
The complete 11LO9I designation remains the primary identifier. Screen shape and dimensions, focusing and deflection methods, heater data, anode voltages, lead arrangement and envelope dimensions must also match. A visually similar tube with another designation is not an approved substitute without documentary confirmation.
Installation and handling
Protect the glass envelope from impact, point loading and sudden temperature change. Inspect the screen, neck, leads and sealed joints before installation. Clean the glass without pressure and without damaging the marking. High-voltage circuits must be tested only under the procedure specified for the host equipment.
Ordering 11LO9I
Please state the designation, equipment model and required quantity. The minimum order is 5 pieces. A marking photograph or manual reference helps confirm the execution. Related items are listed under Cathode-Ray Tubes; general principles are described in the Cathode-ray tube reference. Availability, condition and documents are confirmed with the supply offer.
Technical details
- Designation
- 11LO9I
- Product type
- Single-beam oscilloscope CRT
- Primary function
- Visual observation and measurement of electrical processes
- Screen shape
- Flat rectangular
- Screen colour
- Green
All specificationsCollapse specifications
- Working screen area
- 60 × 80 mm
- Reference scale
- Parallax-free
- Focusing and deflection
- Electrostatic
- Heater voltage
- 6.3 V
- Heater current
- 0.08–0.10 A
- Focused line width
- No more than 0.6 mm
- X sensitivity
- At least 0.8 mm/V
- Y sensitivity
- At least 1.4 mm/V
- Fifth-anode voltage
- 1–9 kV
- Mass
- No more than 0.6 kg
- Operating life
- At least 1,000 h
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms


