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High-Quality Video Output for Industrial Displays
The Siemens C79458-L2350-A1 VGA card provides high-resolution video output for industrial operator panels and monitors. This card converts digital display data into analog RGB signals for standard VGA-compatible screens. Industrial workstations require clear, stable visuals, and this card delivers that performance reliably.
Display Resolution and Video Performance
This VGA card supports resolutions up to 1280 x 1024 pixels with a refresh rate of 60 Hz. The card outputs analog RGB signals with separate horizontal and vertical sync pulses. An integrated RAMDAC operates at 250 MHz, ensuring smooth image rendering. Furthermore, the card supports both interlaced and non-interlaced display modes for various monitor types.
| Parameter | Specification |
|---|---|
| Model | Siemens C79458-L2350-A1 |
| Maximum Resolution | 1280 x 1024 at 60 Hz |
| RAMDAC Frequency | 250 MHz |
| Video Output | Analog RGB (15-pin VGA) |
| Color Depth | 16.7 million colors (24-bit) |
| Sync Signals | Separate H-Sync and V-Sync |
| Monitor Support | CRT and LCD (VGA-compatible) |
| Backplane Interface | ISA (16-bit) |
| Dimensions (W x H x D) | 90 mm x 60 mm x 15 mm |
| Weight | 0.12 kg |
| Power Consumption | 5 V DC at 300 mA |
| Operating Temperature | 0°C to 55°C |
Graphics Processing and Memory
The Siemens C79458-L2350-A1 includes 2 MB of onboard video memory for frame buffering and acceleration. This memory supports double-buffered graphics for flicker-free animation and screen updates. An integrated graphics controller handles bit-block transfers and hardware cursor operations. These features ensure responsive operator interface performance even with complex screen layouts.
Connector Interface and Cable Compatibility
This VGA card features a standard 15-pin D-sub female connector on a rear bracket. The connector provides analog RGB signals, sync pulses, and monitor detection lines. A shielded VGA cable with male connectors on both ends connects the card to the display. The card also includes a second header for internal LCD panel connections on compatible systems.
Installation and System Requirements
You can install this VGA card into any standard ISA slot on the industrial computer backplane. The card automatically configures its I/O address and interrupt using the Plug and Play protocol. For legacy systems, you may need to set jumpers for manual resource allocation. Always connect the monitor cable before powering on the system. The card requires proper chassis ventilation to maintain its operating temperature range.
Diagnostics and Status Indication
This VGA card provides a set of diagnostic LED indicators for operational status. A green LED lights when the card receives correct bus timing and synchronization. A flashing amber LED indicates a video memory or RAMDAC fault condition. The card also supports VESA BIOS extensions for advanced power management and display control functions.