Keithley 3721-ST User Manual

Section 3: Instrument description Series 3700A System Switch/Multimeter Reference Manual
3-38 3700AS-901-01 Rev. D/June 2018
Figure 38: Series 3700A web interface cards page
Open and close slots from the card pages
You can open and close channels from the card pages in several ways.
The simplest method is to click a connection. The channel changes state to open or closed. When the
channel is open, the connection will look similar to one of the following graphics (the actual item on
the web interface depends on the installed card):
Figure 39: Web interface open channel
Figure 40: Web interface relay open
When the channel is closed, the connection will look similar to one of the following:
Figure 41: Web interface closed channel
Figure 42: Web interface relay closed

Keithley 3721-ST Specifications

General

Type	Multimeter
Model	3721-ST
Manufacturer	Keithley
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
Relay Type	Electromechanical
Temperature Range	-200°C to 1820°C
Accuracy	Varies by function and range
Resolution	Varies by function and range
Display	LCD
Interface	GPIB, RS-232
Topology	Multiplexer
Maximum Switching Voltage	300 V
Maximum Switching Current	1 A
Input Impedance	>10 GΩ (DC Voltage ranges)