Jul 07, 2026 Leave a message

How To Select FOV, Working Distance And Cable Length For A 4mm AV Endoscope Camera

Introduction

Many endoscope camera samples are rejected even though there is nothing technically wrong with the camera.

The real problem is often incorrect selection.

The FOV does not match the inspection task.

The target is outside the focus range.

The fixed LEDs reflect from the surface.

The cable is unnecessarily long.

The customer expects USB behavior from an AV camera.

The SF-C3010TV-D4.0 is a D4.0 integrated AV endoscope camera module with NTSC 640×480@30fps output, 4pcs LEDs, 65° / 90° FOV options and 30–80mm / 30–100mm focusing range options.

For OEM customers, successful integration depends on matching these parameters to the real inspection environment.

Start with the Inspection Task

Before selecting a sample, customers should answer five questions:

What does the user need to see?

How far is the target from the lens?

Does the user need a focused view or wider context?

What is the target surface material?

What type of video system will receive the AV signal?

These questions are more important than choosing a model only by diameter.

Product Overview

The SF-C3010TV-D4.0 provides:

D4.0 integrated camera structure

0.3MP imaging class

AV output

NTSC format

640×480@30fps

4pcs 0402 LEDs

11.8mm front length

Plastic lens

65° / 90° FOV options

30–80mm / 30–100mm focusing range options

IP67: No

1.5m standard cable

5m maximum cable length

Dimming: No

The catalog does not specify a sensor model, main board size or connector model, so these details should be confirmed separately if they are important to the project.

Customer Pain Point 1: "Which FOV should we choose?"

Customers often assume the wider option is automatically better.

That is not always true.

65° FOV

This option can be useful when the customer needs more focused observation.

Typical reasons include:

The target area is small

The user needs better visual concentration

The surrounding scene is not important

The camera works at a stable distance

90° FOV

This option can be useful when the customer needs more scene context.

Typical reasons include:

The user needs easier navigation

The cavity is larger

The user needs to see surrounding structures

The camera direction changes during inspection

The right FOV depends on what the operator needs to see.

Customer Pain Point 2: "Why is the image blurry even though the camera works?"

The likely cause may be working distance.

This model provides:

30–80mm

30–100mm

focusing range options.

If the customer places the camera extremely close to the target, the image may not match expectations.

Before sample selection, customers should measure:

Minimum normal distance

Maximum normal distance

Typical operating distance

Whether the distance changes during use

This information helps select the correct focus configuration.

Customer Pain Point 3: "The LEDs are bright, but the surface becomes white."

This is usually a reflection problem.

The module includes 4pcs LEDs, but dimming is not supported.

Fixed illumination can work well when:

The target is not highly reflective

The working distance is stable

The inspection environment is consistent

The target surface is not wet or mirror-like

Problems may occur when inspecting:

Polished metal

Wet surfaces

Glossy coatings

Curved reflective parts

Very close targets

Customers should test the actual material, not only a general test object.

Customer Pain Point 4: "Can we use a 5m cable because longer is more convenient?"

The catalog lists a 1.5m standard cable and a maximum length of 5m.

Longer cable is not automatically better.

Customers should select cable length based on:

Actual product length

Operator distance

Display location

Cable routing

Signal stability

Mechanical reliability

Portability

A portable inspection device may not benefit from unnecessary cable length.

Customer Pain Point 5: "Can we replace our USB camera with this AV module?"

Not directly without considering the complete system architecture.

This module uses AV output and NTSC video.

Customers should first confirm:

What input the display accepts

Whether the processing board supports NTSC analog video

Whether the current software expects USB video

Whether an additional video conversion stage would be required

The correct interface choice should be made at system level.

Customer Pain Point 6: "We need waterproof use."

This model is not marked as IP67.

Customers should not assume that the module is waterproof.

If the application involves:

Water

Oil

Cleaning liquid

High humidity

Wet pipes

Fluid exposure

then the customer should either design a validated sealed housing or select an IP67-supported module.

Waterproof requirements should be discussed before sample approval.

Best-Fit Industrial Scenarios

This model can be evaluated for applications where customers need:

Basic visual confirmation

Compact D4.0 camera structure

Short-to-medium inspection distance

Built-in fixed LED lighting

Analog video output

Simple display architecture

Potential applications include:

Machinery internal checking

Automotive maintenance

Equipment assembly inspection

Dry cavity observation

Component presence checking

Compact AV borescope development

Maintenance visualization systems

When 640×480 Is Enough

640×480 can be sufficient when the customer needs to answer simple visual questions:

Is something blocked?

Is a component present?

Is the part aligned?

Is there visible contamination?

Is a surface condition obvious?

Can the operator see the internal structure?

It may not be enough when the task requires:

Fine crack detection

Precision measurement

Small defect classification

AI recognition

High-resolution documentation

Detailed medical visualization

The decision should be based on the inspection task.

Sample Evaluation Checklist

When testing SF-C3010TV-D4.0, customers should check:

AV system compatibility

NTSC image stability

Image clarity at actual working distance

65° / 90° FOV performance

LED brightness

Reflection on real target surfaces

Cable length and image stability

Front-end fit inside the device

Environmental conditions

Need for waterproof protection

The test environment should resemble the final application.

RFQ Checklist

Before contacting SincereFull, provide:

Application

Industrial or other device direction

Target cavity size

Working distance

Preferred FOV

Target surface material

Lighting environment

Waterproof requirement

Required cable length

AV display or processing board information

Sample quantity

Estimated annual demand

Mechanical drawing if available

Conclusion

The SF-C3010TV-D4.0 is not a universal endoscope camera module.

It is best suited to OEM customers who need a compact 4mm AV imaging solution for basic real-time observation.

The project succeeds when the customer correctly matches:

FOV

Working distance

LED lighting

Cable length

Video architecture

environmental requirements

to the final device.

CTA

Not sure whether 65° or 90° FOV is right for your AV inspection device?

Send your target size, working distance, surface material, cable length and video system information to SincereFull. Our team can help evaluate the suitable SF-C3010TV-D4.0 configuration for your project.

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