Keithley 2000 User Manual

Pressing EXT TRIG then STEP or SCAN on the multimeter places it at point A in the
flowchart, where it is waiting for an external trigger.
Pressing STEP takes the Model 7001/7002 out of the idle state and places operation at
point B in the flowchart.
For the first pass through the model, the scanner does not wait at point B for a trigger.
Instead, it closes the first channel.
After the relay settles, the Model 7001/7002 outputs a Channel Ready pulse. Since the
instrument is programmed to scan ten channels, operation loops back up to point B, where it
waits for an input trigger.
and Remember that the Model 2000 operation is at point A waiting for a trigger.
The output Channel Ready pulse from the Model 7001/7002 triggers the multimeter to measure
DUT #1 (point E). After the measurement is complete, the Model 2000 outputs a completion
pulse (point F) and then loops back to point A, where it waits for another input trigger.
The trigger applied to the Model 7001/7002 from the Model 2000 closes the next channel in
the scan. This triggers the multimeter to measure the next DUT. The process continues until all
ten channels are scanned and measured.
A
B
C
D
E F
Measurement Options 3-15

Keithley 2000 Specifications

General

Digits	6.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	100 Ω to 100 MΩ
Connectivity	IEEE-488 (GPIB)
Display Type	VFD