Scanner Card Detection; Power-Up Detection; Scanner Option Bus Query - Keithley 2000-SCAN-20 Instruction Manual

Scanner card detection

Power-up detection

The scanner card is detected only at power-on. If the card is plugged in after the power is
turned on, the multimeter will not recognize the presence of the card.
CAUTION
If the card is not present at power-on, scanner bus commands or queries will generate a
"Missing hardware error," and front panel operations pertaining to the scanner will inform you
that no scanner is present.

Scanner option bus query

*OPT? is an IEEE 488.2 common query that determines whether or not a scanner card is
installed. Also, the Model 2000-20 multimeter can distinguish between a Model-2000-SCAN
10-channel card and the Model-2000-SCAN-20 20-channel card. The response to this query is
as follows:
•
•
•
Refer to the multimeter manual for more details on using the *OPT? query.
Plugging in the scanner card with power turned on may result in damage to
both the Model 2000-SCAN-20 and the multimeter.
0: Scanner not installed.
0,10CH: Model 2000-SCAN 10-channel card installed.
0,20CH: Model 2000-SCAN-20 20-channel card installed.
Operation 3-3