INSTRUEMENT PRODUCTS

  • 	Tektronix
  • 	National Instruments
  • 	Keithley
  • 	Qmax
  • 	VPC
  • 	Transcom Instrument
  • Delorenzo
  • Custom
  • 	Graphtec
  • EZMARKER
  • ETSYSTEM

BROADCAST PRODUCTS

  • 	Tektronix
  • 	Harmonic
  • 	Streambox
  • 	Volicon
  • 	Newtec
  • 	Apantac
  • 	UTAH
  • DekTec
  • ARG
  • 	Nucom
  • Dev
  • mitec
  • norwia
  • edgeware
  • RFS Radio Frequency Systems

COMMUNICATION PRODUCTS

  • 	Netscout(ใช้ข้อมูลใหม่)
  • 	VSS
  • 	EXFO
  • SwissQual
  • Sumitomo
  • RFS RAdio Frequency Systems
  • ROHDE&SCHWARZ
  • cellex
  • TraceSpan
  • SevOne

Serial Interfaces for RS232, RS485, and RS422

 
National Instruments offers high-quality, reliable serial interfaces for communications with laboratory instruments, industrial devices, and embedded circuits using RS232, RS485, and RS422. NI serial interfaces work on all major PC platforms with a variety of port and isolation options. 
 
 
 
Series
Plug-In Controllers 
Series Interface Ports Serial Standard  
PCI-8430/2 PCI 2 RS232 More detail
PCIe-8430/2 PCI Express 2 RS232 More detail
PCI-8431/4 PCI 4 RS485, RS422 More detail

External Controllers 
Series Interface Ports Serial Standard  
NI USB-232 USB 1, 2, 4 RS232 More detail
NI USB-485 USB 1, 2, 4 RS485, RS422 More detail
NI ENET-232/2 Ethernet 2 RS232 More detail
NI ENET-485/4 Ethernet 4 RS485, RS422 More detail