Keithley 2701, Инструкция по эксплуатации

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2-2 Network Connection Model 2701 Instrument Networking Instruction Manual
Overview
Keithley’s Model 2701 is a multipoint measurement and control system that fully integrates
instrument quality resolution and sensitivity in an Ethernet-based data acquisition (DAQ)
system. The Model 2701 is designed for a 10/100BaseTX network using standard RJ-45
connectors. This is an eight wire connector, but only two sets of wire pairs are used: one pair to
transmit and one pair to receive data. A 10BaseT network can accommodate transmission
speeds up to 10Mbit per second where a 100BaseTX network operates at speeds of up to
100Mbit per second. Both types of networks usually require Ethernet hubs to make
connections. The exception is a one to one connection using a cross over cable, which may be a
10BaseT or 100BaseTX dependent on the PC’s Ethernet interface card and which category of
cable is used.
Information on four connection schemes is detailed in this section:
• Direct connection—PC to Model 2701 through a cross over cable (provided).
• Hub connection—PC to one or more Model 2701s.
• Dual interface card connection—PC with two interface cards. (One for the Model 2701
network and one for the corporate network—each network isolated.)
• Corporate network connection—requires IS/IT or Network Administrator.
Component specifications
Table 2-1 contains a listing of the different components that may be required for the differ-
ent Model 2701 connection schemes (not all items are required for all connections).
Table 2-1
Component specifications
Component
Specifications
(required by Model 2701)
Other
specifications
Typical use
Network Interface Card Speed: 10 Mbit/sec or 100
Mbit/sec, Connector: RJ-45
As required by PC All schemes
Cross Over Cable
(provided) CAT 5, Connector: RJ-45 None PC to Single Model 2701.
Straight-thru Cable CAT 5, Connector: RJ-45 None PC to Model 2701 through hub
or network drop.
Network Hub 10/100BaseTX, RJ-45 Jacks None PC to Model 2701 through hub.