Description
The PCI-485/2, with part number 777641-02, is a specialized serial interface card designed for PCI-Bus PCs, featuring a double port setup that operates in a non-concurrent manner. This card, measuring a length of 6.5 inches (165 mm), is compatible with PCI-Z, 5V PCI, and 3.3V PCI slots, offering versatility for system integration. It supports both RS-485 balanced mode and single-ended mode for transmission and reception, ensuring robust communication capabilities.
Each port on the PCI-485/2 is capable of providing bias voltage, which is crucial for maintaining a known “zero” state in RS-485 communication when all transmitters are off. The card employs 16550 UARTs for asynchronous communication and includes a 16-byte transmit/receive FIFO buffer to prevent data loss in multitasking environments. This buffer also maintains full compatibility with the original IBM serial port standard.
The PCI-485/2 boasts an impressive baud rate capability of up to 460,800 baud, facilitated by an onboard crystal oscillator for precise baud rate generation. The type 75ALS180 driver/receivers used in the card are capable of driving long communication lines at high baud rates and feature a thermal shutdown mechanism to protect against overheating during operation.
Despite its obsolete status, as announced by National Instruments, the PCI-485/2 remains available for purchase and repairs through Apex Waves, ensuring continued support for existing systems utilizing this interface card.
| Specification | Detail |
|---|---|
| Part Number | PCI-485/2 |
| NI Part Number | 777641-02 |
| Ports | Double port, non-concurrent |
| Length | 6.5 inches (165 mm) |
| Compatible Slots | PCI-Z, 5V PCI, 3.3V PCI |
| Mode | RS-485 balanced mode transmission/reception, Single-ended transmission/reception |
| Bias Voltage | Supported on each port |
| UART Type | 16550 |
| FIFO Buffer | 16-byte transmit/receive |
| Baud Rate Capability | Up to 460,800 baud |
| Driver/Receivers | Type 75ALS180 |
| Thermal Shutdown | Yes |
| Obsolete Status | Announced by National Instruments, available for purchase and repairs by Apex Waves |
Question 1: What features of the PCI-485/2 interface card enable it to maintain effective communication in RS-485 mode and prevent data loss in multitasking environments?
Answer 1: The obsolete PCI-485/2 interface card with part number 777641-02 is a PCI-Bus PC-compatible serial interface card featuring a double non-concurrent port setup, a length of 6.5 inches, compatibility with PCI-Z, 5V PCI, and 3.3V PCI slots, support for RS-485 balanced and single-ended modes, onboard bias voltage provision, 16550 UARTs with a 16-byte FIFO buffer, a baud rate capability of up to
Question 2: What are the characteristics and compatibilities of the obsolete PCI-485/2 interface card with part number 777641-02?
Answer 2: The PCI-485/2 interface card features bias voltage support for maintaining a “zero” state in RS-485 communication, 16550 UARTs for asynchronous communication, and a 16-byte transmit/receive FIFO buffer to prevent data loss in multitasking environments, all of which enable it to maintain effective communication in RS-485 mode.
Question 3: What are the capabilities and compatibility features of the PCI-485/2 serial interface card, and how does Apex Waves ensure its availability despite its obsolete status?
Answer 3: The PCI-485/2, part number 777641-02, is a versatile interface card for PCI-Bus PCs that accommodates various PCI slot types, including PCI-Z, 5V PCI, and 3.3V PCI, and offers robust communication capabilities with its support for RS-485 balanced and single-ended modes, 16550 UARTs for asynchronous communication, a 16-byte FIFO buffer to prevent data loss, and a high baud rate capability of up to 460,
Question 4: What are the capabilities and specifications of the obsolete National Instruments PCI-485/2 serial interface card, part number 777641-02, including its compatibility, UARTs, FIFO buffer size, baud rate, and available support?
Answer 4: The National Instruments PCI-485/2 serial interface card, part number 777641-02, is designed for PCI-Bus PCs and offers compatibility with PCI-Z, 5V PCI, and 3.3V PCI slots, utilizes 16550 UARTs for asynchronous communication, includes a 16-byte FIFO buffer to prevent data loss, supports a baud rate of up to 460,800, and although it is obsolete, it remains supported by Apex Waves for purchase and repairs.
Question 5: What features and capabilities make the PCI-485/2, part number 777641-02, a suitable interface card for PCI-Bus PCs with various PCI slot types and demanding RS-485 communication requirements?
Answer 5: The PCI-485/2 serial interface card is capable of non-concurrent dual port operation, supports RS-485 balanced and single-ended modes, provides bias voltage, employs 16550 UARTs with a 16-byte FIFO buffer, and boasts a baud rate of up to 460,800 baud with thermal shutdown protection. It is compatible with PCI-Z, 5V PCI, and 3.3V PCI slots, and despite its obsolete status as announced by National Instruments, Apex Waves ensures
