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DS3800HNMB1B1A - Null Modem Communication Card is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: DS3800HNMB1B1A
Manufacturer: General Electric
Series: Mark IV
Product Type: Null Modem Communication Card
Input Voltage Range: 24 V dc
Size: 8.25 cm high x 4.18 cm
Repair: 3-7 Day
Availability: In Stock
Weight: 1 lbs
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
DS3800HNMB1B1A is a Null Modem Communication Card manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Control Systems. A Null Modem Communication Card, often simply referred to as a Null Modem Card, is a hardware device used in computer systems to facilitate direct communication between two devices, such as two computers, without the need for a modem or other communication equipment. The term "null modem" refers to the fact that the modem signals, which are typically used for communication between devices, are effectively nulled or bypassed. The card typically includes a set of connectors, often RS-232 serial ports, that allow the direct connection of two devices. These connectors are configured in a way that the transmit signals from one device are connected to the received signals of the other device and vice versa. This direct connection enables data exchange between the devices through a physical cable. Null modem communication is useful in various scenarios, such as file transfers, data synchronization, or direct communication between two computers. The use of a Null Modem Communication Card eliminates the need for an intermediary device, like a modem, and can be particularly handy in situations where a direct point-to-point connection is desired.
FEATURES:
RS-232 Serial Ports: Null Modem Communication Cards often feature RS-232 serial ports, which are widely used for serial communication between devices. These ports allow for the transmission and reception of data between connected devices.
Bidirectional Communication: The card enables bidirectional communication, meaning data can be sent and received in both directions between the connected devices. This is crucial for establishing a two-way communication link.
Null Modem Wiring: The card is configured with null modem wiring, where the transmit signals of one device are connected to the receive signals of the other device and vice versa. This nullifies the need for a modem or other intermediary equipment.
Data Rate Compatibility: The card supports various data rates or baud rates, allowing users to select the appropriate speed for their communication needs. This ensures flexibility in adapting to different devices with varying transmission capabilities.
Flow Control: Many Null Modem Communication Cards support flow control mechanisms such as hardware flow control (using RTS/CTS signals) or software flow control (using XON/XOFF signals). This helps in managing data flow between devices and preventing data loss due to buffer overflow.
Indicators and Status LEDs: Some cards come equipped with indicator lights or status LEDs that provide visual feedback on the operational status of the communication link. This can include indicators for power, data transmission, and error conditions.
Compatibility with Standard Cables: The cards are designed to work with standard cables for connecting devices. This ensures ease of use and compatibility with commonly available cables, simplifying the setup process.
Plug-and-Play Support: Many Null Modem Communication Cards are designed for easy installation and use. Plug-and-play functionality allows users to connect the card to their systems without the need for extensive configuration or driver installations.
WOC has the largest stock of GE Speedtronic Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.
What is a Null Modem Communication Card?
A Null Modem Communication Card is a hardware device that facilitates direct communication between two devices, typically computers, without the need for a modem. It nullifies or bypasses modem signals, allowing for a direct point-to-point connection.
How does a Null Modem Communication Card work?
The card works by using null modem wiring, where transmit signals from one device are connected to the received signals of the other device and vice versa. This enables bidirectional communication between the connected devices.
What are the common applications of Null Modem Communication Cards?
Null Modem Communication Cards are used for various applications, including file transfers, data synchronization, and direct communication between two computers. They are particularly useful in scenarios where a direct connection is preferred over a network or when dealing with legacy equipment.
