Keithley 7999-6, Инструкция по эксплуатации

Страница: 21 / 89

2-2 Connections
Introduction
This section contains information about overall switch configuration and connections and is
organized as follows:
• Handling precautions
• Configuration
• Connections
WARNING The procedures in this section are intended only for qualified service per-
sonnel. Do not perform these procedures unless you are qualified to do so.
Failure to recognize and observe normal safety precautions could result in
personal injury or death.
Handling precautions
To maintain high-impedance isolation, care should be taken when handling the switch to
avoid contamination from foreign materials such as body oils. Such contamination can reduce
isolation resistance. To avoid possible contamination:
• Always grasp the switch by the handles or the relay housing.
• Do not touch bulkhead connector insulators.
• Operate the switch in a clean environment. If the switch becomes contaminated, it
should be thoroughly cleaned as explained in Section 4.
Configuration
Layout
Figure 2-1 and Figure 2-2 show the general layout of the Model 7999-6 featuring the
following:
Connectors:
• Power receptacle (9-pin male D-sub connector)
• GPIB Control: IEEE-488 interface connector
• N-type insulated bulkhead input connectors
Indicators:
• Power LED
• ERR LED (communication error or failed power on self-test)
• Relay state LEDs (one for each relay pole)
Switches:
• Manual toggle switch (one per relay)
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com