Ni-usb-gpib-hs usb to gps card
1. Product overview
General interface bus (general-purpose interface bus, gpib) is an equipment and computer connected bus. Most desktop instruments are connected to computers through gps lines and gps interfaces。
Ni-usb-gpib-hs usb-gpib cards are an ansi/ieee488 standard set by the ieee association. Gpib cards define electrical, mechanical, functional and software features for the connection system between the pc and programmable instruments。
Basic characteristics:
(1) several devices may be connected to each other by a single bus to form an automated test system. The number of devices in the system does not exceed 15 and the length of the interconnected bus does not exceed 20 m。
(2) data transmission is carried by two-way inverse means of simultaneous bits (bits), serial bytes (bit groups), with a maximum transmission rate not exceeding 1 megabytes per second。
(3) the message transmitted on the bus follows a negative logic. Low level (≤0. 8v) is logical “1” and high level (≥2. 0v) is logical “0”。
(4) address capacity. Single bytes: 31 speaking addresses, 31 hearing addresses; two-bytes: 961 speaking addresses, 961 hearing addresses。
(5) generally applicable to laboratories and production sites with minor electrical interference。
