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 opera-
tion at point B in the flowchart.
For the first pass through the model, the scanner does not wait at point B for a trig-
ger. 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 trig-
ger. 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
2000-900 (J - Aug 2010) BOOK.fm Page 15 Wednesday, October 12, 2011 12:29 PM