Keithley 2700 User Manual

2-26 Close/Open Switching Module Channels Model 2700 Multimeter/Switch System User’s Manual
For this application, the 2-pole/4-pole relay and backplane isolation relays of the
switching module are to be controlled as follows:
• Closing channel 23 connects the External Source to DUT via channels 11 through
20. Closing channel 23 also isolates measure channels (1 through 10) from the
source channels (11 through 20). This channel must remain closed while testing
DUT.
• Opening channel 24 isolates the external source from the backplane of the
Model
2700. This channel must remain open while testing DUT.
• Closing channel 25 connects an input channel (1 through 10) to the DMM.
In Figure 2-9, channels 1 and 11 are closed to test DUT 1. A more detailed view of the test
for DUT 1 is shown in Figure 2-10. The test for the other DUTs is similar except that
different source and measure channels are closed. Closed channels for each DUT test are
listed as follows:
NOTE Do not use this application to measure the temperature of DUT using a
thermocouple with the INTernal or EXTernal reference junction selected. The
SIMulated reference junction will instead be used resulting in invalid readings.
The “ERR” annunciator will turn on to indicate that the integrity of the
temperature reading is questionable.
Test procedure:
NOTES The following test procedure assumes a Model 7700 switching module installed
in slot 1 of the mainframe.
The procedure assumes that the instrument is operating in the continuous
measurement (triggering) mode (see
“Defaults and user setups,” page 1-20).
Do not use the following procedure to perform thermocouple temperature
measurements with the INTernal or EXTernal reference junction selected. The
SIMulated reference junction will instead be used resulting in invalid readings.
The “ERR” annunciator will turn on to indicate that the integrity of the
temperature reading is questionable.
Tested
device
Closed channels
Tested
device
Closed channels
DUT 1 1, 11, 23 and 25 DUT 6 6, 16, 23 and 25
DUT 2 2, 12, 23 and 25 DUT 7 7, 17, 23 and 25
DUT 3 3, 13, 23 and 25 DUT 8 8, 18, 23 and 25
DUT 4 4, 14, 23 and 25 DUT 9 9, 19, 23 and 25
DUT 5 5, 15, 23 and 25 DUT 10 10, 20, 23 and 25

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