How to Identify Your System (AHD vs CVBS vs FHD)

Before troubleshooting or ordering replacement parts, it's important to know which type of system you have. Using incompatible cameras, cables, or monitors can cause issues like "No Signal" or poor image quality.

Step 1 — Check Your Part Number

Look at the label on your monitor, camera, or product box. The model number will tell you a lot.

AHD systems typically include:

• "AHD" in the model name (example: RVS-770AHD)
• A part number ending in "-AHD"

FHD systems typically include:

• "FHD" or "CA" in the model name

Standard CVBS systems:

• Usually do NOT include AHD or FHD in the model name
• If there's no signal type indicator, it's likely a standard CVBS system

Step 2 — Check Your Cable and Connector Type

Most RVS systems use a 4-pin round connector. The important thing to know is that the connector looks the same across all three signal types.

Important: Just because the connector fits does NOT mean the camera and monitor are compatible. AHD, CVBS, and FHD systems all use similar connectors but are NOT interchangeable.

Step 3 — Check Your Monitor Compatibility

Your monitor determines what will work with your system.

Monitor Type	Compatible Cameras
CVBS monitor	CVBS cameras only
AHD monitor	AHD cameras only
FHD monitor	FHD, AHD, and CVBS cameras

Common Compatibility Issues

Combination	Result
AHD camera + CVBS monitor	No Signal
FHD camera + non-FHD monitor	No Signal
Mixing different signal types	No image or poor image quality

Still Not Sure?

Check your original order confirmation or product box for the model number. If you still can't identify your system, email us at [e-mail] with:

• A photo of your camera and its connector
• A photo of your monitor
• Any part numbers you can find

Contact us: 📧 [e-mail] 📞 800-764-1028 💬 Text: 929.668.9530

Related Articles

• How to Identify Your RVS System
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• Why Is My Camera Showing No Signal?
• Find Compatible Parts