Description
The National Instruments PXI-8420/4 RS-232 Interface, with part number 777733-04, is designed for use in PXI systems and supports a four-port PXI serial port configuration using a DB-9 connector type. This interface is also compatible with a 10-way connector to DB-9 or DB-25 when using a National Instruments converter cable.
Integration with software is seamless, as it incorporates NI-Serial and standard Windows NT communications, providing support for operating systems like Windows NT, which accommodates both Win16 and Win32 applications. The communication mode supported by the PXI-8420/4 is half duplex with DTR (Data Terminal Ready) control, ensuring reliable data transfer and control over the transmission process.
In terms of signal control, the device uses the DTR line to control the transmitter, with the receiver mode being always enabled in DTR-with-echo mode. In contrast, when operating in two-wire, DTR-with-echo mode, the receiver is automatically disabled when the transmitter is enabled, preventing the reception of packets sent from the user’s own transmitter.
| Feature | Description |
|---|---|
| Product Name | National Instruments PXI-8420/4 RS-232 Interface |
| Part Number | 777733-04 |
| Port Configuration | Four-port PXI serial |
| Connector Type | DB-9 |
| Connector Compatibility | 10-way connector to DB-9 or DB-25 (with NI converter cable) |
| Software Integration | NI-Serial, Windows NT communications |
| Operating Systems | Windows NT, with Win16 or Win32 application support |
| Communication Mode | Half duplex with DTR control |
| UART Signal Control | DTR (Data Terminal Ready) |
| Receiver Mode | Always enabled in DTR-with-echo mode; Automatically disabled when transmitter is enabled in two-wire, DTR-with-echo mode |
Question 1: What is the function of the DTR line in the National Instruments PXI-8420/4 RS-232 Interface, and how does it affect the receiver mode during operation in two-wire, DTR-with-echo mode?
Answer 1: The National Instruments PXI-8420/4 RS-232 Interface supports a four-port PXI serial port configuration using a DB-9 connector and can be adapted to a 10-way connector with the appropriate National Instruments converter cable. Its DTR (Data Terminal Ready) control feature ensures reliable data transfer by controlling the transmitter; in DTR-with-echo mode, the receiver is always enabled, while in two-wire, DTR-with-echo mode, the receiver is automatically disabled when the
Question 2: What data communication mode does the National Instruments PXI-8420/4 RS-232 Interface support, and how does it manage signal control during transmission?
Answer 2: The National Instruments PXI-8420/4 RS-232 Interface can accommodate connector conversions from a 10-way connector to either DB-9 or DB-25 when using the appropriate National Instruments converter cable.
Question 3: What types of connector conversions can the National Instruments PXI-8420/4 RS-232 Interface accommodate when using the appropriate National Instruments converter cable?
Answer 3: The National Instruments PXI-8420/4 RS-232 Interface supports half duplex communication with DTR (Data Terminal Ready) control, which manages signal control during transmission by using the DTR line to control the transmitter while the receiver is always enabled in DTR-with-echo mode, and in two-wire, DTR-with-echo mode, the receiver is automatically disabled when the transmitter is enabled to prevent the reception of packets sent from the user’s own transmitter.
Question 4: What are the features and compatibility of the National Instruments PXI-8420/4 RS-232 Interface as stated in the provided description?
Answer 4: In the National Instruments PXI-8420/4 RS-232 Interface, the DTR (Data Terminal Ready) line functions to control the transmitter, and during operation in two-wire, DTR-with-echo mode, it automatically disables the receiver when the transmitter is enabled, which prevents the reception of packets that the user’s own transmitter sends.
Question 5: What type of connector does the National Instruments PXI-8420/4 RS-232 Interface support, and how does its DTR (Data Terminal Ready) control feature affect signal transmission in different operating modes?
Answer 5: The National Instruments PXI-8420/4 RS-232 Interface features a four-port PXI serial port configuration using a DB-9 connector, compatibility with a 10-way connector to DB-9 or DB-25 via an NI converter cable, and seamless software integration with NI-Serial and standard Windows NT communications to support Win16 and Win32 applications. It operates in half duplex with DTR control for reliable data transfer and has a signal control mechanism where the receiver is always enabled in D
