# ALC-4096 — OSD Menu, Firmware, IR Remote, and Light Sensor

## OSD (On Screen Display) Menu

The OSD menu is accessed via physical buttons (5-button analog or 8-button digital switch mount), IR remote control, or RS-232 commands.

### OSD Button Controls

| Control | Digital 8-Button | 5-Button Board |
|---------|-----------------|----------------|
| On/Off | On/Off button | — |
| Brightness | Brightness +/− | — |
| Menu (OSD toggle) | Menu button | Menu button |
| Select up | SEL UP | SEL UP |
| Select down / Confirm | SEL DN | SEL DN |
| Increase / Forward | + | + |
| Decrease / Backward | − | − |

**Reset to factory defaults:** Press and hold SEL DN, then power on the controller.

**Soft power off/on:** Hold Menu button for 3–4 seconds to power off. Press Menu to power back on.

### OSD Button Accessories

| Item | Part Number | Matching Cable |
|------|-------------|---------------|
| Digital 10K type OSD switch mount | 416100520-3 | 426122200-3 |
| 5-button OSD switch mount board | 4161003700-3 | 426123010-3 |

---

## OSD Menu Structure

### Picture

| Setting | Range | Default |
|---------|-------|---------|
| Brightness (backlight) | 0–100 | 100 |
| Black level | 0–100 | 50 |
| Contrast | 0–100 | 50 |
| Sharpness | 0–4 | 2 |

### Display

| Setting | Options | Default |
|---------|---------|---------|
| Display Rotate | 0° / 180° | 0° |

Note: Rotates image only; OSD menu is not rotated by this setting.

### Color

| Setting | Options | Default |
|---------|---------|---------|
| Gamma | 1.8, 2.0, 2.2, 2.4, 2.6 | 2.2 |
| Temperature | 9300K, 7500K, 6500K, 5800K, sRGB, User (R/G/B 0–255) | 6500K |
| Hue | 0–100 | 50 |
| Saturation | 0–100 | 50 |

### Advanced

| Setting | Options | Default |
|---------|---------|---------|
| Aspect Ratio | Full, 16:9, 4:3, 5:4, 1:1 | Full |
| Auto Source Seek | Off / On | On |
| Hot Key 1 (+/−) | Input, Brightness, Black level, Contrast, Sharpness, Hue, Saturation, Aspect Ratio, Volume, No Function | Brightness |
| Hot Key 2 (Up/Dn) | Input, Backlight, Brightness, Contrast, Sharpness, Hue, Saturation, Aspect Ratio, Volume, No Function | Input |
| Power Save | Off / On | On |
| Default Power | Off / On | On |

### Input

| Setting | Options |
|---------|---------|
| D0 | USB-C |
| D1 | DP (DisplayPort) |
| D2 | HDMI |

### Audio

| Setting | Range | Default |
|---------|-------|---------|
| Volume | 0–100 | 50 |
| Mute | On / Off | Off |

### Other

| Setting | Range | Default |
|---------|-------|---------|
| Reset | — | Resets all settings |
| Menu Time (timeout) | On (always), 11–60 seconds | 11 |
| OSD H Position | 0–100 | 50 |
| OSD V Position | 0–100 | 50 |
| Transparency | 0–255 | 0 |
| OSD Rotate | 0°, 90°, 180°, 270° | 0° |

### Information

Displays system information (read-only).

### Factory

| Setting | Options | Default |
|---------|---------|---------|
| Backlight Invert | Off / On | Off |
| Backlight D/A or PWM | PWM / D/A | PWM |
| Backlight Frequency | 100–440 Hz | 160 Hz |
| Min. Backlight Level | 0–50% | 5% |
| Light Sensor | Off / On | Off |
| EDID Setup | Reset | — |
| Firmware version | Display only | V1.00.00.00 or later |

---

## Firmware

### Current Version

BIOS: V1.00.00.00 (Flash GD25Q16CTIGR on U18)

### Firmware Upgrade

Firmware can be upgraded via the DisplayPort connector, or via the HDMI port with an adaptor. A firmware upgrade manual is available on request from Digital View.

### Firmware Version Query (RS-232)

Send command `0xCB, "0"` to read the BIOS version. Returns format `VV.YY.ZZ.AA` where:
- V = Release version (E = Engineering Sample)
- YY = Version number
- ZZ = Customer number
- AA = Revision number

---

## IR Remote Control

### Digital View Remote P/N 5590001xx-3

| Button | Function |
|--------|----------|
| POWER | Soft power ON/OFF |
| SEL UP (▲) | In OSD: move to previous level of selection |
| SEL DN (▼) | In OSD: move to next level of selection or confirm |
| + | In OSD: select functions (forward) or increase values |
| − | In OSD: select functions (backward) or decrease values |
| AV/TV | Select input source (HDMI / DisplayPort) |
| OSD NEXT | Turn OSD menu on/off |
| MUTE | Mute / un-mute audio |

The IR sensor connects to the IR1 connector on the controller board.

---

## Ambient Light Sensor

The ALC-4096 provides an interface for automatic backlight adjustment based on ambient light levels via the CN6 connector.

### Connection Options

| Option | Part Number |
|--------|-------------|
| Light sensor cable (with sensor) | 426321940-3 (1000mm) |
| Light sensor board | 416021310-3 or 416021330-3 |
| Light sensor cable (for board) | 426305900-3 (1250mm) |

### Configuration

The light sensor is configured via:

1. **OSD Factory menu:** Enable/disable the light sensor function.
2. **RS-232 commands (0xEE, 0x78):** Configure up to 12 ambient light threshold levels and 12 corresponding backlight brightness levels.
3. **Digital View TCP-IP Serial Utility (V1.14 or later):** User-friendly software for setting thresholds.

### How It Works

When enabled, the controller reads ambient light values from the sensor connected to CN6 and automatically adjusts the LCD panel backlight brightness according to the configured threshold/backlight mapping table. This allows the display to adapt to changing lighting conditions.

### Sensor Query (RS-232)

- Query light sensor value: `0xEE, 0x70, 0x50, 0x35, 0x33, 0x3F`
- Query onboard temperature sensor: `0xEE, 0x70, 0x50, 0x3B, 0x34, 0x3F`

---

## Troubleshooting

### General Approach

Consider the system as separate elements and use step-by-step elimination:
- Controller (jumpers, settings)
- Panel (cables, connections)
- Backlight (inverter, tubes)
- Cabling
- Computer system (display settings, OS)

### Common Issues

**No image:**
- Check if backlight is working (you may still faintly see an image without backlight).
- Most likely causes: incorrect connection, no power, no signal, incorrect graphics card settings.

**Image appearance problems:**
- Blank lines, failed sections, flickering → faulty panel
- Wrong size, scrolling, bad flicker → incorrect refresh rate, resolution, or interlaced mode
- Total failure or incorrect image → incorrect jumper settings. **CAUTION:** Do not set panel power incorrectly.
- Sparkling on display → faulty panel signal cable
- "Loading" message at HDMI/DVI input → unstable source detected (common with HDMI splitters)

**Backlight issues:**
- Check in order: power input, controls, inverter, tubes
- Half-screen dimmer → check inverter cabling; check AC pin orientation (never reverse DC pins)
- Brightness control has no effect → VR rating or connection method incompatible with inverter

**Continued failures:**
- Investigate whether short circuits or other serious wiring errors exist.
- Use step-by-step substitution of known working parts to isolate the problem.

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*Source: Digital View ALC-4096 instruction manual v1.00 (pages 7–9, 19–21, 35–36), brochure v1.0.*