Keithley 2002 User Manual

IEEE-488 Reference
3-107
This command is used to select the input source for the signal to be measured. If connecting a
current signal to the Model 2002 (AMPS and LO INPUT terminals), select the CURRent input
source. If connecting a voltage signal (HI and LO INPUT terminals), select the VOLTage input
source.
PRINT #1, "output 16; :freq:sour curr; sour?" ' Select current input source
PRINT #1, "enter 16" ' Get response from 2002
THReshold commands
Use these commands to set the maximum signal level and the trigger level for frequency mea-
surements.
:RANGe <n>
[:SENSe[1]]:FREQuency:THReshold:CURRent:RANGe <n> Set current threshold range
[:SENSe[1]]:FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range
<n> = 0 to 1 Specify signal level in amps (current threshold)
0 to 1000 Specify signal level in volts (voltage threshold)
DEFault 1mA maximum signal level (current threshold)
10V maximum signal level (voltage threshold)
MINimum 1mA maximum signal level (current threshold)
1V maximum signal level (voltage threshold)
MAXimum 1A maximum signal level (current threshold)
1000V maximum signal level (voltage threshold)
:RANGe? Query maximum signal level
:RANGe? DEFault Query *RST default signal level
:RANGe? MINimum Query the lowest allowable signal level
:RANGe? MAXimum Query the largest allowable signal level
These commands are used to specify the expected input level. The instrument will then auto-
matically select the most sensitive current or voltage threshold range. For example, if you spec-
ify the expected input current to be 20mA, the instrument selects the 100mA current threshold
range.
PRINT #1, "output 16; :freq:thr:curr:rang .15; range?" ' Select I threshold
range
PRINT #1, "enter 16" ' Get response from 2002
:LEVel <n>
[:SENSe[1]]:FREQuency:THReshold:CURRent:LEVel <n>Set current threshold level
[:SENSe[1]]:FREQuency:THReshold:VOLTage:LEVel <n> Set voltage threshold level
Current Threshold:
<n> = -0.0006 to +0.0006 Trigger level for 1mA range
-0.006 to +0.006 Trigger level for 10mA range
-0.06 to +0.06 Trigger level for 100mA range
-0.6 to +0.6 Trigger level for 1A range
DEFault 0A trigger level
MINimum Range dependent as shown above
MAXimum Range dependent as shown above
Description
Program fragment
3.18.16
Parameters
Query
Description
Program fragment
Parameters

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