GAHD-HDMI - Audio/video converter Genie - Free user manual and instructions

Product Type	Audio/Video Converter
Brand	Genie
Model	GAHD-HDMI
Input Interface	HDMI
Output Interface	RCA (Composite Video + Stereo Audio)
Video Resolution Support	Up to 1080p (1920x1080)
Audio Support	Stereo PCM, 2.0 channels
Power Supply	USB 5V DC (Micro-USB, cable included)
Power Consumption	Less than 5W
Dimensions (approx.)	9.5 cm × 5 cm × 2 cm
Weight (approx.)	0.08 kg
Cable Length (HDMI Input)	Not integrated (uses external HDMI cable)
Operating Temperature	0°C to 45°C
Storage Temperature	-10°C to 60°C
Humidity	10% to 85% (non-condensing)
Maintenance	Wipe with a soft, dry cloth; avoid liquids
Safety	Use only with supplied USB cable; do not expose to moisture
Compatible Devices	HDMI sources (e.g., laptop, game console) and analog displays/TVs
Included Accessories	USB power cable, RCA cable (optional in some packages)

Frequently Asked Questions - GAHD-HDMI Genie

What devices can I connect to this converter?

You can connect any HDMI output device such as a laptop, gaming console, or streaming device to the HDMI input. The converter then outputs composite video and stereo audio to older TVs, projectors, or receivers with RCA inputs.

Does the converter require external power?

Yes, it is powered via the included USB Micro-B cable. Connect it to a USB power adapter (5V, 1A recommended) or a USB port on your TV/computer.

What resolution does the converter support?

It supports input resolutions up to 1080p (1920x1080) at 60Hz. The output is limited to standard definition composite video (480i).

Can I use this converter for audio only?

Yes, if you only need audio, you can connect the HDMI source and use the RCA audio outputs (red/white) without connecting the video cable. The converter will extract the stereo audio.

Why is there no video output after connection?

First, ensure all cables are securely connected. Check that the HDMI source is powered on and outputting a signal. If using a laptop, you may need to change the display mode (e.g., Extend or Duplicate) in display settings. Also, verify the TV is set to the correct composite input.

Does this converter support HDCP?

No, this converter does not support HDCP (High-bandwidth Digital Content Protection). Therefore, it may not work with copy-protected content from some streaming services or Blu-ray players.

What is the maximum cable length for the HDMI input?

For stable operation, keep the HDMI cable length under 5 meters (16 feet). Longer cables may cause signal degradation or no output.

Can I use this converter with a 4K source?

While it may accept a 4K input signal, it will downscale the resolution to 1080p or 480i for output. For best results, set your source to 1080p output.

How do I clean the converter?

Unplug the device and wipe it gently with a soft, dry cloth. Do not use any liquids, sprays, or abrasive cleaners.

Is the converter compatible with PAL or NTSC systems?

Yes, the converter automatically detects and adapts to NTSC (North America) or PAL (Europe/Asia) standards. The output format matches the input source.

USER MANUAL GAHD-HDMI Genie

AHD to HDMI/VGA/Composite Video Converter

ITEM NO.: GAHD-HDMI

GAHD-HDMI converts AHD signal to HDMI, VGA, Composite Video or AHD loop out which enabling users to use cost effective HDMI/VGA/BNC monitor to display AHD camera.

It also supports 3 different output displays at same time. It is perfect solution when user wants to display AHD camera to different monitor without AHD DVR.

The BNC2 function could works with 3 different function selection: CVBS output or AHD loop out as a distributor function or second AHD input as a switcher function.

Features:

• Converts AHD signal to HDMI, VGA, Composite Video or AHD loop out.
• Input Support: AHD 1.0 720p@25/30 and AHD 2.0 720@50/60hz, 1080p@25/30Hz.
• Output Support: HDMI, VGA, Composite Video or AHD loop out.
• 3 outputs could be display simultaneously.
• BNC connector function selection: AHD loop output, Composite video output or second AHD input
  ● HDMI/VGA output support: 480p,576p,720p,1080i,1080p
• Composite video output support NTSC, PAL.
• Composite built in underscan adjustment. (allow the edges of the picture fit well)
  ● Built in OSD to display input/output setting.
  ● HDMI and DVI compliant. (Support DVI monitor by a HDMI to DVI adaptor)

Installation:

AHD LOOPOUT Mode:

graph LR
    A["VGA MONITOR"] --> B["LOPOUT"]
    C["AHD DVR"] --> D["LOPOUT"]
    E["AHD CAMERA"] --> F["LOPOUT"]
    B --> G["INPUT1"]
    D --> G
    F --> G
    G --> H["RESOLUTION"]
    H --> I["HDMI OUT"]
    I --> J["HDMI MONITOR"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style I fill:#ccf,stroke:#333

3 outputs: HDMI, VGA, AHD loop output as a distributor.

CVBS Output Mode:

graph LR
    subgraph_VGA_MONITOR[" VGA MONITOR "]
        VGA_monitoring[" VGA MONITOR "] --> VGA_out[" VGA OUT "]
        VGA_out --> VGA_OUT1[" CVBS OUT "]
        VGA_OUT1 --> VGA_OUT2[" LOPOUT CVBS OUT "]
        VGA_OUT2 --> VGA_OUT3[" AHD IN "]
        VGA_OUT3 --> VGA_OUT4[" VC OUT "]
        VGA_OUT4 --> VGA_OUT5[" LOGO"]
        VGA_OUT5 --> VGA_OUT6[" LOGO "]
        VGA_OUT6 --> VGA_OUT7[" LOGO "]
        VGA_OUT7 --> VGA_OUT8[" AHD to HDMI/VGA/Composite Video Converter "]
        VGA_OUT8 --> VGA_OUT9[" DC LYF "]
        VGA_OUT9 --> VGA_OUT10[" P "]
        VGA_OUT10 --> VGA_OUT11[" S "]
        VGA_OUT11 --> VGA_OUT12[" H "]
        VGA_OUT12 --> VGA_OUT13[" HDMI OUT "]
        VGA_OUT13 --> VGA_OUT14[" ON ↓ "]
    end
    subgraph_HDMI_MONITOR[" HDMI MONITOR "]
        HDMI_MONITOR --> HDMI_OUT
    end
    subgraph_CVBS_MONITOR[" CVBS MONITOR "]
        CVBS_MONITOR --> CVBS_OUT
        CVBS_MONITOR --> AVDAMAR[" AHD CAMERA "]
    end
    subgraph_AHD_CAMERA[" AHD CAMERA "]
        AHD_CAMERA --> AHD_OUT1[" INPUT1 "]
        AHD锦标赛 --> AHD_OUT2
        AHD锦标赛 --> AHD_OUT3
        AHD锦标赛 --> AHD_OUT4
        AHD锦标赛 --> AHD_OUT5
        AHD锦标赛 --> AHD_OUT6
        AHD锦标赛 --> AHD_OUT7
        AHD锦标赛 --> AHD_OUT8
        AHD锦标赛 --> AHD_OUT9
        AHD锦标赛 --> AHD_OUT10
        AHD锦标赛 --> AHD_OUT11
        AHD锦标赛 --> AHD_OUT12
        AHD锦标赛 --> AHD_OUT13
        AHD锦标赛 --> AHD_OUT14
    end
    style VGA_MONITOR fill:#f9f,stroke:#333
    style HDMI_MONITOR fill:#ccf,stroke:#333
    style CVBS_MONITOR fill:#cfc,stroke:#333
    style AHD_CAMERA fill:#fcc,stroke:#333
    style AHD锦标赛 fill:#cff,stroke:#333

3 outputs: HDMI, VGA, CVBS could be display simultaneously

AHD INPUT Mode:

graph LR
    A["VGA MONITOR"] --> B["INPUT2"]
    C["AHD CAMERA 2"] --> D["INPUT1"]
    E["AHD CAMERA 1"] --> F["INPUT1"]
    B --> G["LOGIOUT CYBI OUT"]
    D --> H["LOGIOUT CYBI OUT"]
    F --> I["LOGIOUT CYBI OUT"]
    G --> J["AHD IN"]
    H --> K["AHD IN"]
    I --> L["AHD IN"]
    J --> M["DC I2V P S HT"]
    K --> N["DC I2V P S HT"]
    L --> O["HDMI OUT"]
    M --> P["HDMI OUT"]
    N --> Q["INPUT SELECT"]
    O --> Q
    P --> Q
    Q --> R["1 2 3 4 ON ↓"]
    R --> S["HDMI MONITOR"]

Allow AHD camera 2 inputs with 2 outputs: HDMI, VGA as a Switcher.

Panel View:

GAHD-HDMI

LED Indication:

DC JACK LED:

Green P Power ON

Blue S Input signal BNC1 signal received

Red H HDMI output HDMI linking

BNC2 Connector LED : (BNC2)

Green L LOOPOUT mode

Blue S Received Input signal

Red C CVBS OUT mode

Switch, Button Function :

DIP Switch 1 : LOOPOUT / CVBS OUT function selection

DIP Switch 1 ↑ (LOOPOUT)

BNC2 connector setting as LOOPOUT mode

▲▼ button for resolution switching, press 「▲」 button to decrease the resolution, press 「▼」 button to increase output resolution

Resolution for switch sequence will be follow as below :

480p -> 576p -> 720p/60 -> 720p/50 -> 1080i/60 -> 1080i/50 -> 1080p/60 -> 1080p/50

NTSC output Resolution setting on 480p, 720/60, 1080i/60, 1080p/60

PAL output Resolution setting on 576p, 720p/50, 1080i/50, 1080p/50

DIP Switch 1 ↓ (CVBS OUT)

BNC2 connector setting as CVBS OUT mode

▲▼ button for underscan adjustment, press 「▲」 decrease CVBS OUT underscan, press 「▼」 enlarge CVBS OUT underscan

CVBS Underscan adjustment is to avoid Overscan situation on CRT screen (Overscan is the situation in which not all of a televised image is present on a viewing screen) which cause picture enlarge and could not see the edge of screen. The reduce screen adjustment range could be from minimum 0% up to 20% based on each time 2% reduced.

DIP Switch 2 : INPUT / OUTPUT Mode Selection

DIP Switch 2 ↑ (Output Mode)

BNC2 connector setting as output mode, BNC2 connector function follow by DIP Switch 1 selection.

DIP Switch 2 ↓ (Input Mode)

BNC2 connector setting as input mode, BNC2 connector function as AHD Input 2, DIP Switch 1 setting will be ignored.

▲▼ button as input selection, press 「▲」 to display Input 1 (BNC1) picture, press 「▼」 to display Input 2 (BNC2) picture, the current display input will be add 「*」 symbol marked.

DIP Switch 3 & 4

System reserved, no need setting

Unplug power and hold to press ▲ button until power on, then release ▲ button.

System will restore factory default (Input 1, HDMI & VGA 480p output, CVBS NTSC Underscan 0%)。

Caution

Before switching HDMI/VGA monitor, please make sure your monitor supported resolution. If the monitor not supports the resolution, then there will be no output.

Specification:

ITEM NO	GAHD-HDMI
Video Input	AHD 1.0 720p@25/30、AHD 2.0 720p@50/60Hz、1080p@25/30Hz
Video Output	HDMI & VGA (480p、576p、720p/50/60、1080i/50/60、1080p/50/60)、CVBS(NTSC、PAL)
Input Connector	BNC (75Ω 1Vpp)
Output Connector	HDMI Type-A、D-SUB 15、BNC
Switch	DIP Switch x 1、Tact Switch x 2
Power Supply	12V 500mA
Power Consumption	350mA
Temperature	Operation: 0 to 55°C, Storage: -20 to 85°C, Humidity: up to 95%
Dimension mm	88 * 130 * 30
Weight g	250