Keithley 2002 User Manual

IEEE-488 Reference
3-144
:syst:key 15
The parameter listing provides the key-press code in numeric order. Figure 3-39 also provides
the key-press code.
The :KEY command allows you to select the NEXT displays over the bus. Sending :SYS-
Tem:KEY 16 over the bus is the same as a single press of the NEXT key. Sending :SYS-
Tem:KEY 8 is the same as a single press of the PREV key. The NEXT display that is selected
depends on which function is currently selected and how many times the NEXT key is “pressed”
using the :KEY command. The instrument can always be returned to the normal display by
“pressing” the PREV key a similar number of times, or by sending the :DISPlay:CNDisplay
command.
For example, on the FREQ function, you can display the trigger level by “pressing” the NEXT
key twice as follows:
:syst:key 16; key 16
To return to the normal display, “press” the PREV key twice as follows:
:syst:key 8; key 8
The queue for the :KEY? query command can only hold one key-press. When :KEY? is sent
over the bus, and the Model 2002 is addressed to talk, the key-press code number for the last key
pressed (either physically or with :KEY) is sent to the computer.
PRINT #1, "output 16; :syst:key 29" ' Select DCI function
SLEEP 3 ' Wait 3 seconds
PRINT #1, "output 16; :sys:key 16; key 16" ' Select Zero Center Bar Graph
SLEEP 3 ' Wait 3 seconds
PRINT #1, "output 16; :syst:key 8; key 8" ' Return to normal display
Figure 3-39
Key-press codes
NEXT
DISPLAY
PREV
POWER
DCV ACV DCI ACI
Ω2
Ω4
FREQ TEMP
REL
TRIG STORE RECALL
INFO LOCAL CHAN SCAN CONFIG MENU EXIT ENTER
RANGE
AUTO
FILTER MATH
RANGE
SENSE
Ω 4 WIRE
HI
INPUT
LO
INPUTS
CAL
500V
PEAK
F
R
FRONT/REAR
2A 250V
AMPS
350V
PEAK
1100V
PEAK
!
16
23
31
7
30
6
14
21
13
20
28
4
27
3
11
18
10
17
9
8 15 22 29 5 12 19 26 2 1
2002 MULTIMETER
Program fragment

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