Keithley 2700 User Manual

Model 2700 Multimeter/Switch System User’s Manual Basic DMM Operation 3-39
Thermistor connections
A thermistor can be connected directly to the front panel inputs or to any of the 20 input
channels of the Model 7700 switching module as shown in
Figure 3-15.
Figure 3-15
Thermistor connections
4-wire RTD connections
Shown in Figure 3-16 are 4-wire RTD connections to the Model 2700. For the Model 7700
switching module, paired channels are used to perform the 4-wire measurement. The two
input leads of the RTD are connected to a primary channel (1 through 10), while the two
sense leads are connected to its paired channel (11 through 20). Channel 1 is paired to
channel 11, channel
2 is paired to channel 12, and so on.
Figure 3-16
4-wire RTD connections
Model 2700
Input HI
Input LO
A. Front panel inputs
Thermistor
B. Model 7700 switching module
H
L
CH 1-20
Model 7700
Switching
Module
Thermistor
Model 2700
Input HI
Input LO
Sense HI
Sense LO
4-wire
RTD
A. Front panel inputs
4-wire
RTD
B. Model 7700 switching module
H
L
CH 1-10
Model 7700
Switching
Module
H
L
CH 11-20
INPUT
SENSE
Input High
Sense High
Input LowSense Low

Keithley 2700 Specifications

General

Type	Digital Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Frequency Range	3 Hz to 500 kHz
Temperature Range	-200°C to +1372°C
Display	Vacuum Fluorescent Display
Connectivity	IEEE-488, RS-232
Channels	10
Power Supply	100V to 240V AC, 45Hz to 66Hz
DC Current Range	10 µA to 3 A
AC Current Range	10 µA to 3 A
Temperature Measurement	Thermocouple, RTD