Keithley 2002 User Manual

IEEE-488 Reference
3-89
The function parameter specifies the measurement function for the channels listed in the chan-
list. As a scan is being performed, the Model 2002 will select the specified measurement func-
tion for each channel in the scan.
Any measurement function, except current (ACI and DCI), can be used for internal scanning.
Note that the Keithley Model 2001-SCAN scanner card cannot be used to make thermocouple
temperature measurements. Any measurement function can be used for external scanning
(assuming you are using the appropriate switching card).
With the NONE function parameter selected, the channels specified in the chanlist will not be
scanned. This will not change the defined scan list, it will simply cause the specified channels
to be skipped.
With the ALTernate function parameter selected, the specified channels in the chanlist will be
measured according to the saved alternate setup conditions. An alternate setup is saved using
the [:SENSe[1]]:ALTernate SAVe command (see Sense subsystem).
' Assign DCV to specified channels
PRINT #1, "output 16; :rout:scan:func (@ 1,3,5,7), 'volt:dc'"
:RCHannel <list>
:ROUTe:SCAN:RATio:RCHannel <list> Specify reference channel for Ratio
:ROUTe:SCAN:DELTa:RCHannel <list> Specify reference channel for Delta
<list> = (@ chanlist)
where; chanlist is a single channel number (1 to 10)
:RCHannel? Query reference channel
These commands are used to select the reference channel for the ratio and delta calculations.
Note that channel 5 and channel 10 (which is the default) are the high speed solid state switches
on the Model 2001-SCAN. See paragraph 2.11 for details.
PRINT #1, "output 16; :rout:scan:rat:rch (@ 1); rch?" ' Select and query ref-
erence channel
PRINT #1, "enter 16" ' Get response message
from 2002
:MCHannel <list>
:ROUTe:SCAN:RATio:MCHannel <list> Specify measure channel for Ratio
:ROUTe:SCAN:DELTa:MCHannel <list> Specify measure channel for Delta
<list> = (@ chanlist)
where; chanlist is a single channel number (1 to 10)
:MCHannel? Query measure channel
These commands are used to select the measure channel for the ratio and delta calculations.
Note that channel 5 and channel 10 (which is the default) are the high speed solid state switches
on the Model 2001-SCAN. See paragraph 2.11 for details.
Program fragment
Parameters
Query
Description
Program fragment
Parameters
Query
Description

Keithley 2002 Specifications

General

Resolution	8.5 digits
DC Voltage Accuracy	±0.0006%
Maximum DC Voltage	1000 V
Maximum AC Voltage	750 V
Maximum DC Current	3 A
Maximum AC Current	3 A
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	10 Ω to 1 GΩ
Model	2002
Category	Multimeter
Interface	GPIB, RS-232
AC Current Accuracy	±0.1%
Frequency Range	0.1Hz to 300kHz
Display	VFD
Type	Digital
Power Supply	100-240V AC, 50/60Hz
Current Range (DC)	100 μA to 3 A
Current Accuracy (DC)	±0.01%
Current Range (AC)	100 μA to 3 A
Current Accuracy (AC)	±0.1%
DC Current Range	100 μA to 3 A
AC Current Range	100 μA to 3 A